Atch_9_-_1H-60(H)G-2-1.PDF

TO 1H-60(H)G-2-1

TECHNICAL MANUAL

ORGANIZATIONAL

AND

INTERMEDIATE MAINTENANCE

AIRCRAFT

GENERAL INFORMATION MANUAL

FOR HH-60 SERIES HELICOPTER

DISTRIBUTION STATEMENT D - Distribution authorized to the Department of Defense and U.S. DoD contractors only (Administrative or Operational Use) (15 April 2013). Refer other requests for this document to AFLCMC/WIUBC, Robins AFB, GA 31098.

WARNING - This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec.

2751, et seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401, et seq. Violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of DoD Directive 5230.25.

HANDLING AND DESTRUCTION NOTICE - Comply with distribution statement and destroy by any method that will prevent disclosure of contents or reconstruction of the document.

Published Under Authority of the Secretary of the Air Force

15 APRIL 2013 CHANGE 7 - 15 DECEMBER 2015

BASIC AND ALL UPDATES HAVE BEEN MERGED TO MAKE A COMPLETE PUBLICATION

NOTE: The portion of the text affected by the change is indicated by a vertical line in the outer margin of the page. Changes to illustrations are indicated by shaded or screened areas, or by miniature pointing hands.

INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES.

*Zero in this column indicates an original page.

USAF

Dates of issue for original and changed pages are:

A Change 7

LIST OF EFFECTIVE PAGES

Title A - B C Blank i ii iii iv - vii viii ix - xiv 1-1 1-2 Blank 2-1 2-2 2-3 - 2-34 2-35 2-36 - 2-41 2-42 2-43 - 2-106 2-107 2-108 2-109 - 2-111 2-112 2-113 - 2-164 2-165 - 2-168 2-169 - 2-173 2-174 Blank 3-1 - 3-27 3-28 Blank 4-1 4-2 - 4-3 4-4 4-5 4-6 4-6.1 Added 4-6.2 Blank Added 4-7 - 4-14 5-1 - 5-3 5-4 5-5 5-6 6-1 6-2 - 6-10 6-11 6-12 - 6-13 6-14

6-15 6-16 6-17 - 6-19 6-20 6-21 6-22 6-23 6-24 6-25 6-26 6-27 6-28 6-29 - 6-30 6-30.1 Added 6-30.2 Blank Added 6-31 6-32 6-33 6-34 7-1 - 7-18 A-1 - A-11 A-12

FP-1

FP-2 Blank

FP-3

FP-4 Blank

FP-5

FP-6 Blank

FP-7

FP-8 Blank

FP-9

FP-10 Blank

FP-11

FP-12 Blank

FP-13

FP-14 Blank

FP-15

FP-16 Blank

FP-17

FP-18 Blank

FP-19

FP-20 Blank

FP-21

FP-22 Blank

FP-23

FP-24 Blank

FP-25

FP-26 Blank

FP-27

FP-28 Blank

FP-29

FP-30 Blank

FP-31

FP-32 Blank

FP-33

FP-34 Blank

FP-35

FP-36 Blank

FP-37

FP-38 Blank

FP-39

FP-40 Blank

FP-41

FP-42 Blank

FP-43

FP-44 Blank

FP-45

FP-46 Blank

FP-47

FP-48 Blank

FP-49

FP-50 Blank

FP-51

FP-52 Blank

FP-53

FP-54 Blank

FP-55

FP-56 Blank

FP-57

FP-58 Blank

FP-59

FP-60 Blank

FP-61

FP-62 Blank

FP-63

FP-64 Blank

FP-65

FP-66 Blank

FP-67

FP-68 Blank

Original . . . . . . . . . . . . . . 0 . . . . . . . . . . . 15 April 2013 Change . . . . . . . . . . . . . . . 1 . . . . . . . . . . . 1 August 2013 Change . . . . . . . . . . . . . . . 2 . . . . . . . . . 1 February 2014 Change . . . . . . . . . . . . . . . 3 . . . . . . . 15 November 2014

Change. . . . . . . . . . . . . . . 4 . . . . . . . . . . 15 March 2015 Change. . . . . . . . . . . . . . . 5 . . . . . . . 15 September 2015 Change. . . . . . . . . . . . . . . 6 . . . . . . . . 1 November 2015 Change. . . . . . . . . . . . . . . 7 . . . . . . . 15 December 2015

TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 550, CONSISTING OF THE FOLLOWING:

Page *Change No. No.

Page *Change No. No.

Page *Change No. No.

LIST OF EFFECTIVE PAGES

*Zero in this column indicates an original page.

Change 7 B/(C blank)

Page *Change No. No.

Page *Change No. No.

Page *Change No. No.

FP-69

FP-70 Blank

FP-71

FP-72 Blank

FP-73

FP-74 Blank

FP-75

FP-76 Blank

FP-77

FP-78 Blank

FP-79

FP-80 Blank

FP-81

FP-82 Blank

FP-83

FP-84 Blank

FP-85

FP-86 Blank

FP-87

FP-88 Blank

FP-89

FP-90 Blank

FP-91

FP-92 Blank

FP-93

FP-94 Blank

FP-95

FP-96 Blank

FP-97

FP-98 Blank

FP-99

FP-100 Blank

FP-101

FP-102 Blank

FP-103

FP-104 Blank

FP-105

FP-106 Blank

FP-107

FP-108 Blank

FP-109

FP-110 Blank

FP-111

FP-112 Blank

FP-113

FP-114 Blank

FP-115

FP-116 Blank

FP-117

FP-118 Blank

FP-119

FP-120 Blank

FP-121

FP-122 Blank

FP-123

FP-124 Blank

FP-125

FP-126 Blank

FP-127

FP-128 Blank

FP-129

FP-130 Blank

FP-131

FP-132 Blank

FP-133

FP-134 Blank

FP-135

FP-136 Blank

FP-137

FP-138 Blank

FP-139

FP-140 Blank

FP-141

FP-142 Blank

FP-143

FP-144 Blank

FP-145

FP-146 Blank

FP-147

FP-148 Blank

FP-149

FP-150 Blank

FP-151

FP-152 Blank

FP-153

FP-154 Blank

FP-155

FP-156 Blank

FP-157

FP-158 Blank

FP-159

FP-160 Blank

FP-161

FP-162 Blank

FP-163

FP-164 Blank

FP-165

FP-166 Blank

FP-167

FP-168 Blank

FP-169

FP-170 Blank

FP-171

FP-172 Blank

FP-173

FP-174 Blank

FP-175

FP-176 Blank

FP-177

FP-178 Blank

FP-179

FP-180 Blank

FP-181

FP-182 Blank

FP-183

FP-184 Blank

FP-185

FP-186 Blank

FP-187

FP-188 Blank

FP-189

FP-190 Blank

FP-191

FP-192 Blank

FP-193

FP-194 Blank

FP-195

FP-196 Blank

FP-197

FP-198 Blank

FP-199

FP-200 Blank

FP-201

FP-202 Blank

FP-203

FP-204 Blank

FP-205

FP-206 Blank

FP-207

FP-208 Blank

FP-209

FP-210 Blank

FP-211

FP-212 Blank

FP-213

FP-214 Blank

FP-215

FP-216 Blank

FP-217

FP-218 Blank

FP-219

FP-220 Blank

FP-221

FP-222 Blank

FP-223

FP-224 Blank

FP-225

FP-226 Blank

FP-227

FP-228 Blank

FP-229

FP-230 Blank

FP-231

FP-232 Blank

FP-233

FP-234 Blank

FP-235

FP-236 Blank

FP-237

FP-238 Blank FP-239 Added FP-240 Blank Added

TABLE OF CONTENTS

Chapter Page Chapter Page

FOREWORD...............................................................ix

SAFETY SUMMARY ..............................................xiii

1 GENERAL INFORMATION....................................1-1

1.1 GENERAL...................................................1-1

1.1.1 Scope............................................................1-1

1.1.2 Maintenance Forms and Records.................1-1

1.1.3 Connection of Electric Connec-

tors ..........................................................1-1

1.1.4 Routing and Clamping of Wire

Harnesses ................................................1-1

1.1.5 Deleted

1.1.6 Removal of Electrical Power for

Line Replaceable Unit (LRU) Replacement............................................1-1

2 EQUIPMENT DESCRIPTION AND

DATA ...................................................................2-1

2.1 AIRCRAFT DESCRIPTION.......................2-1

2.1.1 General .........................................................2-1

2.1.2 Electromagnetic Environment

(EME) .....................................................2-1

2.1.3 Principal Dimensions ...................................2-1

2.1.4 Stations, Waterlines, and But-

tlines........................................................2-1

2.1.5 Access and Inspection Provisions ................2-1

2.1.6 Steps, Handholds, and Walkways ................2-1

2.2 AIRFRAME.................................................2-1

2.2.1 Aircraft Structure .........................................2-1

2.2.2 Cockpit .......................................................2-15

2.2.3 Cabin ..........................................................2-16

2.2.4 Transition Section ......................................2-22

2.2.5 Main Rotor Pylon.......................................2-22

2.2.6 Tail Cone....................................................2-26

2.2.7 Tail Pylon...................................................2-26

2.2.8 Stabilator ....................................................2-26

2.2.9 Armor Plating.............................................2-26

2.2.10 Vibration Absorbers...................................2-26

2.2.11 Wire Strike Protection System...................2-26

2.3 LANDING GEAR......................................2-29

2.3.1 Main Landing Gear ....................................2-29

2.4 POWER PACKAGE..................................2-34

2.4.1 Demountable Power Package.....................2-34

2.4.2 Engine ........................................................2-34

2.5 ENGINE CONTROL SYSTEMS..............2-43

2.5.1 Load-Demand System................................2-43

2.5.2 Power Control System ...............................2-43

2.5.3 Speed Control System................................2-43

2.5.4 Engine Controls Quadrant..........................2-43

2.6 ENGINE START AND IGNI-

TION SYSTEM ....................................2-43

2.7 ENGINE SPEED TRIM SYSTEM............2-46

2.8 ENGINE OVERSPEED PRO-

TECTION SYSTEM.............................2-46

2.8.1 Overspeed Test Buttons .............................2-46

2.8.2 100% Np ....................................................2-46

2.8.3 Overspeed Signal .......................................2-46

2.8.4 Collective Stick Position Censor ...............2-46

2.9 ENGINE INDICATING SYS-

TEMS....................................................2-46

2.9.1 Power Turbine Gas Temperature

Indicating System .................................2-49

2.9.2 Oil Temperature Indicating Sys-

tem ........................................................2-49

2.9.3 Oil Pressure Indicating System..................2-49

2.9.4 Engine Torque Indicating System..............2-49

2.9.5 Power Turbine/Rotor Speed Indi-

cating System........................................2-49

2.9.6 Gas Generator Speed Indicating

System...................................................2-49

2.10 ENGINE WARNNG SYSTEMS...............2-49

2.10.1 Fuel Pressure Warning System ..................2-49

2.10.2 Fuel Filter Bypass Warning Sys-

tem ........................................................2-49

2.10.3 Oil Pressure Warning System ....................2-51

2.10.4 Oil Temperature Warning System .............2-51

2.10.5 Oil Filter Bypass Warning Sys-

tem ........................................................2-51

2.10.6 Chip Detector Warning System .................2-51

2.11 ENGINE ANTI-ICE SYSTEMS ...............2-51

2.12 ENGINE CONTROLS QUAD-

RANT....................................................2-51

2.12.1 Engine Controls Quadrant..........................2-51

2.12.2 Starter and Starter Override

Switches ................................................2-51

2.13 ROTOR SYSTEMS ...................................2-53

2.13.1 Main Rotor Blades .....................................2-53

2.13.2 Pressure Indicator.......................................2-53

2.14 MAIN ROTOR HEAD AND

COMPONENTS ...................................2-53

2.14.1 Droop Stops................................................2-53

2.14.2 Main Rotor Hub .........................................2-53

2.14.3 Bifilar Vibration Absorber .........................2-53

2.14.4 Lead Stops..................................................2-53

2.14.5 **SC** Pitch Control Rods .......................2-57

2.14.6 Dampers .....................................................2-57

2.14.7 Anti-Flapping Assemblies..........................2-57

2.14.8 Swashplate .................................................2-57

2.15 TAIL ROTOR............................................2-57

2.15.1 Tail Rotor Blades .......................................2-57

Change 5 i

2.15.2 Pitch Change Beam ..................................2-60

2.15.3 Pitch Control Links ..................................2-60

2.16 POWERTRAIN ........................................2-60

2.17 TRANSMISSION SYSTEMS..................2-60

2.17.1 Oil Pressure...............................................2-60

2.17.2 Main Transmission ...................................2-60

2.17.3 Main Transmission Warning and

Indicating Systems...............................2-63

2.18 CHIP DETECTOR SYSTEM ..................2-63

2.18.1 Main Gearbox ...........................................2-63

2.18.2 Accessory Modules...................................2-63

2.18.3 Input Modules...........................................2-63

2.18.4 Intermediate Gearbox ...............................2-63

2.18.5 Tail Gearbox .............................................2-64

2.18.6 Transmission Chip Detector Sys-

tem with Self-Test Built-in Test (BIT) ............................................2-64

2.19 GEARBOX OIL CONTAMINA-

TION ....................................................2-64

2.20 INTERMEDIATE GEARBOX ................2-64

2.21 TAIL GEARBOX.....................................2-64

2.22 GUST LOCK............................................2-64

2.23 TAIL ROTOR DRIVE SHAFT...............2-67

2.23.1 Flexible Coupling .....................................2-67

2.23.2 Rotor Brake System .................................2-67

2.23.3 Rotor Brake Master Cylinder...................2-67

2.23.4 Pressure Switch.........................................2-67

2.23.5 Rotor Brake Accumulator ........................2-67

2.23.6 Rotor Brake Assembly .............................2-71

2.23.7 Manifold....................................................2-71

2.23.8 Hydraulic Refill Hand Pump, and

Selector Valve......................................2-71

2.24 HYDRAULIC SYSTEMS........................2-71

2.24.1 Major Components ...................................2-71

2.24.2 No. 1 Hydraulic System...........................2-71

2.24.3 No. 2 System ............................................2-71

2.24.4 Backup Hydraulic System........................2-71

2.24.5 Three Hydraulic Systems .........................2-71

2.24.6 Hydraulic Pump Modules.........................2-71

2.24.7 Transfer Modules......................................2-76

2.24.8 Utility Module ..........................................2-76

2.24.9 Primary Servos .........................................2-76

2.24.10 Pilot Assist Servos, Actuators, and Module ..........................................2-76

2.24.11 Tail Rotor Servo .......................................2-78

2.24.12 Logic Modules..........................................2-78

2.24.13 Primary Servo Shutoff Switch .................2-78

2.24.14 Hydraulic Leak Test Switch and

Isolation System...................................2-78

2.24.15 APU Accumulator ....................................2-81

2.24.16 Winterization Kit Accumulator................2-81

2.24.17 Hydraulic Refill Hand Pump and

Selector Valve......................................2-81

2.24.18 Rescue Hoist Manifold and Prior-

ity Valve...............................................2-81

2.25 FLIGHT INSTRUMENTS.......................2-81

2.25.1 Barometric Altimeters ..............................2-81

2.25.2 Airspeed Indicators...................................2-83

2.25.3 Vertical Speed Indicators .........................2-84

2.25.4 Pitot-Static Pressure System.....................2-84

2.25.5 Radar Altimeters.......................................2-87

2.25.6 Horizontal Situation Indicators ................2-87

2.25.7 Vertical Situation Indicators.....................2-89

2.25.8 Stabilator Position Indicator.....................2-89

2.25.9 Stabilator Position Placard .......................2-89

2.25.10 Standby Compass .....................................2-89

2.25.11 Clock .........................................................2-90

2.26 MISCELLANEOUS SWITCH

PANEL.................................................2-90

2.27 ENGINE INSTRUMENTS ......................2-90

2.28 INSTRUMENT DISPLAY SYS-

TEM .....................................................2-90

2.29 SIGNAL DATA CONVERTER ..............2-90

2.30 CENTRAL DISPLAY UNIT...................2-91

2.30.1 CDU Switches ..........................................2-91

2.31 PILOT’S AND COPILOT’S

DISPLAY UNIT..................................2-94

2.31.1 Introduction...............................................2-94

2.31.2 Vertical Displays and Digital

Readouts...............................................2-94

2.32 CAUTION/ADVISORY WARN-

ING SYSTEM .....................................2-94

2.33 CAUTION/ADVISORY WARN-

ING PANEL ........................................2-94

2.34 FREE-AIR THERMOMETER.................2-97

2.35 AC ELECTRICAL SYSTEM ..................2-97

2.35.1 General......................................................2-97

2.35.2 Auxiliary/Primary/External AC

Power ...................................................2-97

2.35.3 Component Description............................2-97

2.36 DC ELECTRICAL SYSTEM ................2-104

2.36.1 General....................................................2-104

2.36.2 Component Description..........................2-106

2.37 LIGHTING SYSTEMS ..........................2-107

2.37.1 Interior Lighting .....................................2-107

2.38 BLADE DE-ICING SYSTEM...............2-120

2.38.1 Introduction.............................................2-120

2.38.2 Panel Lighting.........................................2-122

2.39 BLADE DE-ICE TEST PANEL............2-125

2.40 FUEL SYSTEM .....................................2-125

2.40.1 Grounding ...............................................2-125

2.40.2 Main Fuel System...................................2-125

2.40.3 Fuel Quantity Indicating System ...........2-128

2.40.4 Fuel Low-Level Warning System .........2-130

2.40.5 Fuel Booster Pump Control Panel .........2-131

2.40.6 Refuel/Defuel System.............................2-131

2.40.7 Fuel Management System ......................2-132

2.40.8 Fuel Overflow Warning System ............2-133

2.40.9 Auxiliary Fuel System............................2-135

2.41 FLIGHT CONTROL SYSTEMS...........2-145

2.41.1 Flight Controls Self-Retaining

Bolts ...................................................2-145

2.41.2 Collective Control System .....................2-145

2.41.3 Collective Stick Assembly .....................2-145

2.41.4 Cyclic Control System ...........................2-145

2.41.5 Cyclic Stick Assembly ...........................2-145

2.42 TAIL ROTOR CONTROL SYS-

TEM ...................................................2-145

2.42.1 Directional Control Pedals .....................2-146

2.42.2 Tail Rotor Quadrant ...............................2-146 ii

2.43 WINDSHIELD ANTI-ICE SYS-

TEM ....................................................2-146

2.43.1 Windshield Washer System .....................2-146

2.44 FIRE DETECTION SYSTEM.................2-146

2.45 FIRE EXTINGUISHING SYS-

TEM ....................................................2-146

2.46 HEATER/VENTILATION SYS-

TEM ....................................................2-150

2.46.1 Arctic Heater System (On Air-

craft Modified by TO 1H-60-

981) .....................................................2-150

2.47 AUXILIARY POWER UNIT

(APU), DESCRIPTION AND

DATA .................................................2-150

2.47.1 APU Model 116305-100 through

116305-300 Series ..............................2-150

2.47.2 APU 3800480-1 and 3800480-2 ..............2-154

2.47.3 APU Controls...........................................2-154

2.47.4 APU System Description .........................2-154

2.48 MISSION FLEXIBILITY KITS..............2-165

2.48.1 Chaff/Flare Dispenser Systems................2-165

2.48.2 IR Suppression Kit ...................................2-165

2.48.3 Hover Infrared Suppression Sys-

tem ......................................................2-165

2.48.4 Armament.................................................2-165

2.48.5 Deleted

2.48.6 Winterization Kit......................................2-165

2.48.7 Rescue Hoist System (General) ...............2-165

2.48.8 Cockpit Rescue Hoist Control

Panel....................................................2-166

2.48.9 Consolidated Control Panel .....................2-166

2.49 CARGO HOOK SYSTEM ......................2-169

2.50 CREWMAN’S CARGO HOOK

PENDANT..........................................2-169

2.51 EXTERNAL STORES SUP-

PORT SYSTEM (ESSS).....................2-169

2.51.1 Horizontal Stores Support ........................2-169

2.51.2 Vertical Stores Pylons..............................2-169

2.51.3 Fixed Provisions.......................................2-169

2.52 LANDING GEAR SNOW SKI

KIT......................................................2-169

2.53 INTEGRATED VEHICLE

HEALTH MONITORING

SYSTEM (IVHMS) ............................2-169

3 PRINCIPLES OF OPERATION ...............................3-1

3.1 ENGINE START AND IGNI-

TION SYSTEM ......................................3-1

3.1.1 APU..............................................................3-1

3.1.2 Engine Crossbleed (One Engine

Operating) ...............................................3-1

3.1.3 External Air Supply .....................................3-1

3.2 TRANSMISSION ........................................3-1

3.3 INSTRUMENT DISPLAY SYS-

TEM (IDS)..............................................3-1

3.3.1 Power Distribution .......................................3-1

3.3.2 System Interface...........................................3-4

3.4 SIGNAL DATA CONVERTER

MODULES .............................................3-5

3.4.1 Lamp Power Supply (A2) ............................3-5

3.4.2 Logic Power Supply (A3) ............................3-5

3.4.3 Interface No. 4 Module (A4)........................3-5

3.4.4 Interface No. 3 Module (A5)........................3-5

3.4.5 Interface No. 2 Module (A6)........................3-5

3.4.6 Interface No. 1 Module (A7)........................3-6

3.4.7 Analog Processor No. 2 Module

(A8).........................................................3-6

3.4.8 Analog Processor No. 1 Module

(A9).........................................................3-6

3.4.9 Digital Processor Module (A10) ..................3-6

3.410 Voltage Regulator Module (A11) ................3-6

3.4.11 Lamp Driver Modules (CDU)......................3-7

3.4.12 Voltage Regulator (A17)..............................3-7

3.4.13 Interface No. 1 Module (A15)......................3-7

3.4.14 Interface No. 2 Module (A16)......................3-7

3.4.15 Digital Readout Module (A18) ....................3-7

3.4.16 Lamp Driver Modules (PDU/

CPDU) ....................................................3-8

3.4.17 Torque Digital Readout Module

(A8).........................................................3-8

3.4.18 Autodim Module (A9) .................................3-8

3.5 CAUTION/ADVISORY WARN-

ING SYSTEM.........................................3-8

3.5.1 Theory of Operation.....................................3-8

3.5.2 Caution/Advisory Warning Panel ..............3-12

3.6 AC ELECTRICAL SYSTEM....................3-13

3.6.1 Auxiliary AC Power...................................3-13

3.6.2 External AC Power ....................................3-13

3.6.3 Functional System Operational..................3-13

3.7 DC ELECTRICAL SYSTEM....................3-18

3.7.1 Primary Power System...............................3-18

3.7.2 Battery System ...........................................3-18

3.7.3 Operating Mode Analysis ..........................3-18

3.8 BLADE DE-ICING SYSTEM...................3-19

3.8.1 Power Distribution .....................................3-19

3.8.2 Ice Detector Operation ...............................3-20

3.8.3 Main Rotor Blade System Auto-

matic Mode Operation ..........................3-20

3.8.4 Tail Rotor Blade System Auto-

matic Mode Operation ..........................3-20

3.8.5 Main and Tail Blade De-Ice Sys-

tem Test Mode ......................................3-21

3.8.6 Icing Rate Meter Test.................................3-22

3.8.7 Main and Tail Blade Manual

Mode Operation ....................................3-22

3.8.8 Main Blade Fail/Fault Detection................3-22

3.9 BLADE DE-ICE TEST PANEL................3-22

3.9.1 Main Rotor Power Monitor........................3-23

3.10 FLIGHT CONTROL SYSTEMS...............3-23

3.11 WINDSHIELD ANTI-ICE ........................3-23

3.11.1 Power Distribution .....................................3-23

3.11.2 Normal Operation ......................................3-23

3.12 FIRE EXTINGUISHING SYS-

TEM......................................................3-24

3.13 FIRE DETECTION SYSTEM...................3-24

3.13.1 Power Distribution .....................................3-24

3.14 HEATER/VENTILATION SYS-

TEM......................................................3-25

Change 5 iii

3.14.1 Ventilation System ...................................3-25

3.14.2 Heater System (APU Operation) .............3-25

3.14.3 Heater System (Engines Operat-

ing) .......................................................3-25

3.14.4 Winterization Mode..................................3-25

3.14.5 Arctic Heater System (APU/En-

gine Operating) (On Aircraft Modified by TO 1H-60-981)...............3-25

3.15 AUXILIARY POWER UNIT

SYSTEM..............................................3-25

3.15.1 Power Interruption....................................3-25

3.15.2 Start Signal ...............................................3-25

3.15.3 Electrical Power........................................3-26

3.16 CHAFF/FLARE DISPENSER

SYSTEMS............................................3-26

3.17 CARGO HOOK SYSTEM.......................3-26

3.17.1 Normal Release.........................................3-26

3.17.2 Manual Release.........................................3-26

3.17.3 Emergency Release...................................3-26

3.17.4 Test Function ............................................3-26

3.18 External Stores Support System

(ESSS) JETTISON SYSTEM .............3-26

3.19 DUAL 185 GALLON AUXILIA-

RY FUEL TANKS ..............................3-26

3.19.1 Fuel Quantity Indicator Operation ...........3-26

3.19.2 BIT Operation...........................................3-26

3.19.3 Fault Code Annunciation .........................3-27

3.19.4 Fault Code Erasure ...................................3-27

3.20 SINGLE 200 GALLON INTER-

NAL AUXILIARY FUEL

TANK (ON AIRCRAFT

MODIFIED BY TO

1H-60-919)...........................................3-27

3.20.1 Fuel Quantity Indicator Operation ...........3-27

4 SERVICING AND CLEANING..............................4-1

4.1 SERVICING ...............................................4-1

4.1.1 Special Tools and Consumables/

Materials.................................................4-1

4.1.2 Service Main Landing Gear and

Tires .......................................................4-1

4.1.3 Service Tail Landing Gear and

Tires .......................................................4-1

4.1.4 Service Engine............................................4-1

4.1.5 Service Hydraulic Pump Modules .............4-1

4.1.6 Service Auxiliary Power Unit

(APU) Accumulator...............................4-1

4.1.7 Service/Drain Main Transmission .............4-1

4.1.8 Service/Drain Intermediate

Gearbox..................................................4-1

4.1.9 Service/Drain Tail Gearbox .......................4-1

4.1.10 Service/Drain APU.....................................4-1

4.1.11 Service Main Rotor Head Damp-

er.............................................................4-1

4.1.12 Refuel..........................................................4-1

4.1.13 Defuel..........................................................4-6

4.1.14 Fuel Transfer from Auxiliary

Tank to Main Tank................................4-9

4.1.15 Drain Engine Oil ......................................4-10

4.1.16 Service Windshield Washer Res-

ervoir ....................................................4-10

4.2 CLEANING ..............................................4-10

4.2.1 Special Tools and Consumables/

Materials...............................................4-10

4.2.2 High Pressure/Hot Water Wash ...............4-10

4.2.3 Clean Flight Controls and Hy-

draulic Deck.........................................4-10

4.2.4 Clean Aircraft Exterior.............................4-11

4.2.5 Clean Engine.............................................4-11

4.2.6 Clean Main and Tail Rotor

Blades...................................................4-11

4.2.7 Clean Main Rotor Head ...........................4-12

4.2.8 Clean Powertrain ......................................4-12

4.2.9 Clean Cargo Hook....................................4-13

4.2.10 Clean Main and Tail Landing

Gear ......................................................4-13

4.2.11 Clean Windshield Wiper Pivot

Studs.....................................................4-13

4.2.12 Clean Tail Wheel Lock Pins....................4-13

4.2.13 Clean Tail Wheel Tow Adapters .............4-14

4.2.14 Clean Main Rotor Slipring and

Brush Block .........................................4-14

4.2.15 Clean Rotor Brake Disc ...........................4-14

5 LUBRICATION........................................................5-1

5.1 LUBRICATION .........................................5-1

5.1.1 Special Tools and Consumables/

Materials.................................................5-1

5.1.2 Lubricate Bifilar .........................................5-1

5.1.3 Lubricate Swashplate..................................5-1

5.1.4 Lubricate Mixer Bellcranks........................5-1

5.1.5 Lubricate Rotary Inputs..............................5-1

5.1.6 Lubricate Landing Gear Shock

Struts ......................................................5-1

5.1.7 Lubricate Stabilator Actuator(s).................5-1

5.1.8 Lubricate Windshield Wiper Piv-

ot Studs ..................................................5-1

5.1.9 Lubricate Windshield Wiper

Converter Shaft ......................................5-1

5.1.10 Lubricate Tailwheel Lockpin .....................5-2

5.1.11 Lubricate Windshield Wiper

Hinge Pin ...............................................5-4

5.1.12 Lubricate Tailwheel Bearings ....................5-4

5.1.13 Lubricate Door Locks.................................5-4

5.1.14 Lubricate Cockpit Door Jettison

Mechanism .............................................5-4

5.1.15 Lubrication Requirements ..........................5-4

6 HANDLING, JACKING, MOORING,

HOISTING, AND SLING LOADING................6-1

6.1 GROUND HANDLING.............................6-1

6.1.1 Special Tools and Consumables/

Materials.................................................6-1

6.1.2 Tow Aircraft ...............................................6-1

6.1.3 Jack Aircraft ...............................................6-3

6.1.4 Level Aircraft .............................................6-6

6.1.5 Tie Down and Moor Aircraft.....................6-6

iv

6.1.6 Fold/Spread Main Rotor Blades.................6-9

6.1.7 Fold/Spread Tail Rotor Blades.................6-18

6.1.8 Fold/Unfold Tail Pylon ............................6-20

6.1.9 Fold/Unfold Stabilator..............................6-27

6.1.10 Install/Remove Tail Cone Tow

Fittings .................................................6-29

6.1.11 Replace Fuselage and Tail Cone

Tiedown Rings.....................................6-29

6.2 APU STARTING .....................................6-29

6.2.1 Before Starting..........................................6-29

6.2.2 APU Start..................................................6-30

6.2.3 APU Shutdown.........................................6-30

6.2.4 Emergency Procedure; APU

Compartment Fire ................................6-30

6.3 EXTERNAL POWER-CON-

NECT ...................................................6-30

6.3.1 Special Tools and Consumables/

Materials...............................................6-30

6.3.2 External Hydraulic Power ........................6-30

6.3.3 External Electrical Power.........................6-31

6.4 COMBAT RUBBER RAIDING

CRAFT (CRRC)/ KANGA-

ROO DUCK (K-DUCK)

PREPARATION/RECON-

FIGURATION .....................................6-33

6.4.1 Special Tools and Consumables/

Materials...............................................6-33

6.4.2 Preparation for (CRRC/K-

DUCK) Loading ..................................6-33

6.4.3 Reconfiguration of Aircraft Fol-

lowing (CRRC/K-DUCK) Re-lease......................................................6-34

7 PREVENTIVE MAINTENANCE IN-

SPECTION...........................................................7-1

7.1 GENERAL..................................................7-1

7.1.1 Scope...........................................................7-1

7.1.2 General Information ...................................7-1

7.1.3 Engine Output Shaft Inspection -

1 to 3 Flight Hours ................................7-1

7.1.4 Main Rotor Blade Tip Cap

Screws - 10 Hour...................................7-1

7.1.5 Gearboxes, Mounting Bolts - 10

Hour Torque Checks..............................7-1

7.1.6 Main Rotor Head - 10 Hour

Torque Checks .......................................7-1

7.1.7 Tail Drive Shaft - Torque Checks

- 10 Hours ..............................................7-1

7.1.8 Pitch Beam Retaining Nut

Torque Check - 10 Hours......................7-1

7.1.9 Tail Rotor - Cable Tension

Check - 9 to 11 Hours...........................7-1

7.1.10 Stabilator Hinge Fitting - Torque

Check - 30 Hours ..................................7-1

7.1.11 After Dual-Engine Operation

with Gust Lock Engaged.......................7-1

7.1.12 After Exceeding 145 KIAS with

Cargo Doors Opened. Do the following before next flight after exceeding 145 KIAS with cargo doors open: ..........................7-1

7.1.13 After Fire Extinguishing System

Discharge (Halon Type) ........................7-2

7.1.14 After First Ground Run..............................7-2

7.1.15 After Operating Transmission

with Oil Temperature Above 140 °C/Oil Pressure Below 20 Pound-Force Per Square Inch

(PSI) .......................................................7-3

7.1.16 Hydraulic Pump/Components.....................7-3

7.1.17 Engine Output Shaft Inspection

After Disconnect ....................................7-3

7.1.18 Engine Whine/High Frequency

Vibration Inspection ..............................7-3

7.1.19 Hard Landing..............................................7-4

7.1.20 Aircraft Subject to Excessive

Spin Rate................................................7-5

7.1.21 Main Rotor Blades Dropped Dur-

ing Blade Fold .......................................7-5

7.1.22 Main Rotor Blades Subject to

High Winds ............................................7-5

7.1.23 Post Lightning Strike Inspection................7-7

7.1.24 Rotor Brake Slippage on Start-

Up.........................................................7-11

7.1.25 Rotor Brake - Every 5 to 15

Stops.....................................................7-11

7.1.26 Sudden Stoppage ......................................7-11

7.1.27 Tail Rotor Out of Balance - Loss

of Material............................................7-13

7.1.28 Transmission System - Over-

speed.....................................................7-13

7.1.29 Transmission System - Over

Temperature .........................................7-14

7.1.30 Transmission System - Overtor-

que ........................................................7-17

A SUPPORT EQUIPMENT AND LIST OF

CONSUMABLES ...............................................A-1

A.1 INTRODUCTION .....................................A-1

A.1.1 General.......................................................A-1 A.1.2 Support Equipment ....................................A-1 A.1.3 Consumables ............................................A-12 v

LIST OF ILLUSTRATIONS

Number Title Page Number Title Page

2-1 General Arrangement...................................... 2-4 2-2 Access and Inspection Provisions .................. 2-6 2-3 Steps Handholds and Walkways .................... 2-8 2-4 Airframe Sections ......................................... 2-10 2-5 Cockpit Structure .......................................... 2-10 2-6 Cabin Structure ............................................. 2-11 2-7 Main Rotor Pylon Structure ......................... 2-13 2-8 Transition Section Structure ......................... 2-13 2-9 Tail Cone Structure....................................... 2-14 2-10 Tail Pylon Structure...................................... 2-15 2-11 Cockpit (Nose Section)................................. 2-16 2-12 Pilot’s/Copilot’s Seats (Simula) ................... 2-17 2-13 Pilot’s/Copilot’s Seats (ARA) ...................... 2-18 2-14 Miscellaneous Cockpit Furnishings.............. 2-19 2-15 Cabin (Midsection) ....................................... 2-21 2-16 Cabin Floors.................................................. 2-21 2-17 Troop Seat Arrangement .............................. 2-23 2-18 Troop Seat Arrangement with Internal

Aux Fuel Tank ......................................... 2-23 2-19 Martin-Baker MBCS13300 Multi-Func-tional Operator’s Seats (On Aircraft Modified by TO 1H-60-895) ................... 2-24

2-20 Transition Section ......................................... 2-24 2-21 Main Rotor Pylon ......................................... 2-25 2-22 Engine Cowling and Work Platform............ 2-25 2-23 Sliding Access Cover.................................... 2-27 2-24 Tail Cone....................................................... 2-27 2-25 Tail Pylon...................................................... 2-28 2-26 Armor Plating................................................ 2-29 2-27 Position Transmitter/Limit Switch As-sembly Parts Location.............................. 2-30 2-28 Landing Gear ................................................ 2-31 2-29 Landing Gear Shock Strut - Cutaway.......... 2-33 2-30 Landing Gear Brake System Location

Diagram .................................................... 2-35 2-31 Main Landing Brake System Block Di-agram ........................................................ 2-36 2-32 Wheel Brakes-Cutaway ................................ 2-37 2-33 Demountable Power Package ....................... 2-38 2-34 Engine............................................................ 2-39 2-35 Engine Operation Schematic ........................ 2-41 2-36 Engine Mounts .............................................. 2-41 2-37 Engine Control System................................. 2-44 2-38 Engine Speed Trim System Block Dia-gram.......................................................... 2-47 2-39 Engine Overspeed System ............................ 2-48 2-40 Engine Warning Systems Block Dia-gram.......................................................... 2-50 2-41 Engine Controls Quadrant ............................ 2-52 2-42 Main Rotor Blade and Pressure Indica-tor.............................................................. 2-54 2-43 Main Rotor Blade Expandable Pins ............. 2-55

2-44 Main Rotor Head and Main Transmis-sion ........................................................... 2-56

2-45 Main Rotor Head .......................................... 2-57 2-46 Main Rotor Head Spindle Module-Cuta-way ........................................................... 2-58 2-47 Tail Rotor System......................................... 2-59 2-48 Tail Rotor Blade ........................................... 2-59 2-49 Transmission System Powertrain ................. 2-61 2-50 Main Transmission........................................ 2-62 2-51 Intermediate Gearbox Installed .................... 2-65 2-52 Intermediate Gearbox-Cutaway .................... 2-65 2-53 Tail Gearbox ................................................. 2-66 2-54 Gust Lock Location Diagram....................... 2-66 2-55 Tail Drive Shaft Location Diagram ............. 2-67 2-56 Rotor Brake System Location Diagram....... 2-68 2-57 Rotor Brake System Block Diagram............ 2-70 2-58 Hydraulic Systems Components................... 2-72 2-59 Hydraulic System Block Diagram................ 2-74 2-60 Primary Servo ............................................... 2-77 2-61 Collective Boost Servo ................................. 2-77 2-62 Yaw Boost Servo .......................................... 2-79 2-63 Roll SAS Actuator ........................................ 2-79 2-64 Pitch/Trim Actuator Assembly..................... 2-80 2-65 Tail Rotor Servo ........................................... 2-80 2-66 APU Hydraulic System Location Dia-gram.......................................................... 2-82 2-67 APU Accumulator......................................... 2-83 2-68 Barometric Altimeter Block Diagram .......... 2-84 2-69 Pitot-Static Pressure System Block Dia-gram.......................................................... 2-85 2-70 Pitot Heater Block Diagram ......................... 2-88 2-71 Standby Compass.......................................... 2-90 2-72 Miscellaneous Switch Panel ......................... 2-91 2-73 Signal Data Converter Parts Location.......... 2-92 2-74 Central Display Unit Parts Location Di-agram ........................................................ 2-93 2-75 Pilot’s Display Unit Parts Location Dia-gram (Typical).......................................... 2-95 2-76 Caution/Advisory Panel (LED) Parts

Location Diagram..................................... 2-96 2-77 Free-Air Thermometer ................................ 2-101 2-78 AC Electrical System General Block

Diagram .................................................. 2-102 2-79 DC Electrical System General Block

Diagram .................................................. 2-105 2-80 Console Lighting Block Diagram .............. 2-109 2-81 Cabin Dome Lights Block Diagram .......... 2-113 2-82 Cockpit Flood Lights Block Diagram........ 2-114 2-83 Utility and Maintenance Lights Loca-tion Diagram........................................... 2-115 2-84 Utility and Maintenance Lights Block

Diagram .................................................. 2-116 vi

2-85 Anti-Collision Lights/Infrared (IR) Strobe Block Diagram ........................... 2-118

2-86 Retractable Landing Light Block Dia-gram........................................................ 2-119

2-87 Cargo Hook Lights Location Diagram ...... 2-121 2-88 Cargo Hook Lights Block Diagram ........... 2-122 2-89 Refuel Probe Light Block Diagram ........... 2-123 2-90 Hoist Floodlight Block Diagram ................ 2-124 2-91 Blade De-Ice Test Panel Parts Location

Diagram .................................................. 2-126 2-92 Fuel Cell Components ................................ 2-127 2-93 Fuel Boost Pump Control Panel................. 2-131 2-94 Overflow Warning Circuit Diagram .......... 2-134 2-95 Auxiliary Fuel Tanks .................................. 2-136 2-96 Internal Auxiliary Fuel Tank Restraint

System .................................................... 2-137 2-97 Fuel and Vent Hoses .................................. 2-138 2-98 Fuel Quantity Indicator............................... 2-139 2-99 Fuel Flow Schematic .................................. 2-140 2-100 Single 185 Gallon Auxiliary Fuel Tank ... 2-142 2-101 Single 200 Gallon Internal Auxiliary

Fuel Tank (On Aircraft Modified by

TO 1H-60-919)....................................... 2-143

2-102 Tail Rotor Quadrant.................................... 2-147 2-103 Windshield Wiper System .......................... 2-148 2-104 Windshield Washer System........................ 2-149 2-105 Heater/Ventilation System Location Di-agram ...................................................... 2-151 2-106 Arctic Heater System Location Diagram

(On Aircraft Modified by TO 1H-60- 981)......................................................... 2-152

2-107 116305 Series APU Fuel Control Sche-matic Diagram........................................ 2-153

2-108 3800480 Series APU .................................. 2-155 2-109 3800480 Series APU Fuel Control As-sembly Schematic Diagram ................... 2-157 2-110 Typical APU Installed ................................ 2-158 2-111 APU Simplified Block Diagram ................ 2-159 2-112 APU System Sequence Chart ..................... 2-161 2-113 APU System Block Diagram...................... 2-163 2-114 Rescue Hoist Controls Location Dia-gram........................................................ 2-167 2-115 Crewman’s Cargo Hook Pendant ............... 2-170 2-116 Landing Gear Snow Ski Configuration...... 2-171 3-1 Pilot’s/Copilot’s Display Unit Power

Distribution Diagram ................................. 3-9 3-2 Pilot’s/Copilot’s Display Unit Signal

Flow Diagram........................................... 3-10 3-3 AC Electrical System Matrix ....................... 3-14 3-4 DC Electrical System Matrix ....................... 3-19 3-5 Flight Controls - Simplified Diagram .......... 3-24 4-1 Prepare to Refuel (Pressure)........................... 4-2 4-2 Defueling......................................................... 4-8 5-1 Lubricate Bifilar.............................................. 5-2 5-2 Lubricate Mixer Bellcranks ............................ 5-3 5-3 Lubricate Door Locks..................................... 5-5 6-1 Tow Aircraft.................................................... 6-2 6-2 Jack Aircraft.................................................... 6-5 6-3 Level Aircraft.................................................. 6-7 6-4 Tie Down Aircraft .......................................... 6-8

6-5 HH-60 Paved Surface Mooring Config-uration....................................................... 6-10

6-6 Fold/Spread Main Rotor Blades................... 6-12 6-7 Fold/Spread Main Rotor Blades................... 6-12 6-8 Fold/Spread Main Rotor Blades................... 6-13 6-9 Fold/Spread Main Rotor Blades................... 6-15 6-10 Fold/Spread Main Rotor Blades................... 6-15 6-11 Fold/Spread Main Rotor Blades................... 6-17 6-12 Fold/Spread Tail Rotor Blades..................... 6-19 6-13 Fold/Spread Tail Rotor Blades..................... 6-19 6-14 Fold/Unfold Tail Pylon................................. 6-21 6-15 Fold/Unfold Tail Pylon................................. 6-22 6-16 Fold/Unfold Tail Pylon................................. 6-23 6-17 Fold/Unfold Tail Pylon................................. 6-24 6-18 Fold/Unfold Tail Pylon................................. 6-24 6-19 Fold/Unfold Tail Pylon................................. 6-25 6-20 Fold/Unfold Tail Pylon................................. 6-26 6-21 Stabilator Folding.......................................... 6-28 6-22 Install/Remove Tail Cone Tow Fittings....... 6-29 6-23 External Hydraulic Power ............................ 6-32 6-24 External Electrical Power ............................. 6-34 7-1 Transmission Core Hole Inspection ............. 7-16 7-2 Transmission Bearing Sleeve Inspection ..... 7-16 FO-1 Principal Dimensions ....................................FP-1 FO-2 Stations, Waterlines and Buttlines ...............FP-5 FO-3 Vibration Absorbers......................................FP-9 FO-4 Engine Control Quadrant............................FP-11 FO-5 Engine Start and Ignition System Loca-tion Diagram...........................................FP-13 FO-6 Engine Start and Ignition System Block

Diagram ..................................................FP-17 FO-7 Engine Indicating Systems Block Dia-gram........................................................FP-23 FO-8 Engine Anti-Ice System Block Diagram ...FP-25 FO-9 Transmission System Schematic Dia-gram........................................................FP-27 FO-10 Main Transmission Lubrication System

Block Diagram .......................................FP-31 FO-11 Main Transmission Oil Temperature and Pressure Warning and Indicating Systems Block Diagram.........................FP-33

FO-12 Main Transmission Chip Detector Sys-tem Block Diagram................................FP-35

FO-13 Hydraulic Systems Schematic Diagram.....FP-37 FO-14 Hydraulic Leak Detection Isolation

Schematic Diagram ................................FP-47 FO-15 Instrument Panel Front View .....................FP-49 FO-16 Pitot-Static Pressure System Location

Diagram ..................................................FP-51 FO-17 Pitot Heater Location Diagram ..................FP-55 FO-18 Instrument Display System Location

Diagram ..................................................FP-57 FO-19 Caution/Advisory Warning System Lo-cation Diagram.......................................FP-61 FO-20 Overhead Console.......................................FP-65 FO-21 AC Electrical System Location Diagram...FP-67 FO-22 DC Electrical System Location Diagram...FP-71 FO-23 Instrument Panel Lights Location Dia-gram........................................................FP-75 FO-24 Instrument Panel Lights Block Diagram ...FP-77 vii

FO-25 Console Lighting Location Diagram ............FP-79 FO-26 Instrument Panel and Consoles Indica-tor Lights Dimming Location Dia-gram.........................................................FP-81

FO-27 Instrument Panel and Consoles Indica-tor Lights Dimming Block Diagram........FP-85

FO-28 Cabin Dome Lights Location Diagram ........FP-87 FO-29 Cockpit Flood Lights Location Diagram......FP-89 FO-30 Exterior Lighting Systems Location Di-agram .......................................................FP-93 FO-31 Formation Lights Block Diagram.................FP-97 FO-32 Controllable Searchlight Block Diagram .....FP-99 FO-33 Hoist Controllable Searchlight Block

Diagram .................................................FP-101 FO-34 Blade De-Icing Kit Location Diagram .......FP-103 FO-35 Blade De-Icing System Block Diagram .....FP-107 FO-36 Blade De-Ice Test Panel Block Diagram....FP-119 FO-37 Fuel System Location Diagram ..................FP-121 FO-38 Refueling Probe Control System Sim-plified Schematic ...................................FP-129 FO-39 Fuel System Block Diagram.......................FP-131 FO-40 Fuel System Block Diagram.......................FP-139 FO-41 Fuel Quantity System Block Diagram

HH-60 ....................................................FP-143

FO-42 Fuel Quantity/Fuel Low Level Warning

Systems Location Diagram....................FP-147 FO-43 Fuel Low Level Warning System Block

Diagram .................................................FP-151 FO-44 Cyclic Stick Grips.......................................FP-153 FO-45 Collective Stick Assembly..........................FP-155 FO-46 Windshield Anti-Ice System Location

Diagram .................................................FP-157 FO-47 Fire Detection System Location Dia-gram.......................................................FP-161 FO-48 Fire Detection System Block Diagram.......FP-163 FO-49 Fire Extinguishing System Block Dia-gram.......................................................FP-167 FO-50 Heater/Ventilation System Block Dia-gram.......................................................FP-169

FO-51 Arctic Heater System Block Diagram (On Aircraft Modified by TO 1H-60-

981) ....................................................... FP-173

FO-52 External Hoist Location Diagram .............. FP-175 FO-53 External Hoist Simplified Block Dia-gram ...................................................... FP-181 FO-54 Cargo Hook System Location Diagram ..... FP-185 FO-55 Instrument Display System Block Dia-gram ...................................................... FP-187 FO-56 Signal Data Converter Power Distribu-tion ........................................................ FP-189 FO-57 Signal Data Converter Signal Flow Dia-gram ...................................................... FP-191 FO-58 Central Display Unit Power Distribu-tion Diagram ......................................... FP-193 FO-59 Central Display Unit Signal Flow Dia-gram ...................................................... FP-195 FO-60 Caution/Advisory Warning System

Block Diagram ....