31R2-2GRT-106WC-1.pdf

TO 31R2-2GRT-106WC-1

14 AUGUST 1990

SCHEDULED PERIODIC INSPECTION WORKCARDS

TRANSMITTING SET, RADIO AN/GRT-21(V) AND AN/GRT-22(V)

P/N 8004200G1 THRU 8004200G10

FA8501-05-D-0002

Published Under Authority of the Secretary of the Air Force.

CHANGE 7 - 31 MARCH 2006

BASIC AND ALL CHANGES HAVE BEEN MERGED TO MAKE THIS A COMPLETE PUBLICATION

DISCLOSURE NOTICE - This information is furnished upon the condition that it will not be released to another nation without the specific authority of the

Department of the Air Force of the United States, that it will be used for military purposes only, that individual or corporate rights originating in the information, whether patented or not, will be respected, that the recipient will report promptly to the United States, any known or suspected compromise, and that the information will be provided substantially the same degree of security afforded it by the Department of Defense of the United States. Also, regardless of any other markings on the document, it will not be downgraded or declassified without written approval of the originating United States agency.

DISTRIBUTION STATEMENT B - Distribution authorized to U.S. Government Agencies only (Administrative or Operational Use) (14 August 1990). Other requests for this document shall be referred to 406 SCMS/GUHA, Robins AFB, GA 31098. Questions concerning technical content shall be referred to 580 CBSS/GBLC.

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.

LIST OF EFFECTIVE CARDS

INSERT LATEST CHANGE CARDS. DISPOSE OF SUPERSEDED CARDS IN ACCORDANCE WITH APPLICABLE REGULATIONS.

NOTE: The portion of the text affected by the latest change is indicated by a vertical line in the outer margin of the card.

Dates of issue for original and changed cards are:

A Change 7 #Zero in this column indicates an original card.

TO 31R2-2GRT-106WC-1

Page #Change No. No.

Page #Change No. No.

Page #Change No. No.

Original ............ 0...............14 August 1990 Change ............. 1................... 21 May 1992 Change ............. 2..................2 March 1993

Change..............3 ............. 9 February 1994 Change..............4 ................... 4 May 1994 Change..............5 .........30 November 1994

Change..............6 ............. 23 October 1995 Change..............7 ............... 31 March 2006

THE TOTAL NUMBER OF CARDS IN THIS PUBLICATION IS 21, CONSISTING OF THE FOLLOWING:

Title A I-01 - I-03 1-001 - 1-004 1-004A 1-005 1-005A Added

1-006 1-006A Added 1-007 - 1-011 2-001 2-002

31R2-2GRT-106WC-1_MC-7.book Page 1 Monday, March 13, 2006 3:16 PM

MAN WORK WORK UNIT CODE

INSPECTION

ELECTRICAL POWER SERVICE FIGURE CARD NO.

MIN AREA SYS SUB TABLE OF CONTENTS REQUIREMENTS 1-01

TABLE OF CONTENTS 1-01

INTRODUCTION 1-02

1. INSPECTION REQUIREMENTS 1-001

A. 168 DAY 1-002

B. 336 DAY 1-003

2. SERVICE AND LUBE REQUIREMENTS 2-001

A. 84 DAY SERVICE 2-002

3. SPECIAL INSPECTION N/A

4. REPAIR REPLACEMENT ITEMS N/A

5. REPAIR RESTRICTIONS N/A

CARD NO. WORK AREA(S) TYPE MECH ROR MECH NO CARD TIME PUBLICATION NUMBER CHANGE NO.

1-01 TO 31R2-2GRT-106WC-1

WORK UNIT CddF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK """’um """- INSPECTION

MIN AREA SYS SUB INTRODUCTION REQUIREMENTS 1-02

GENERAL INTRODUCTION

1. THESE WORKCARDS CONTAIN ALL REQUIREMENTS FOR ACCOMPLISHING SCHEDULED MAINTENANCE ON GROUND ELECTRONIC (C-E) EQUIPMENT DURING ITS ENTIRE SERVICE LIFE. IT ESTABLISHES INSPECTION, ACCESSORY REPLACEMENT, DEPOT LEVEL, AND BASE LEVEL REPAIR REQUIREMENT/RESTRICTIONS. THESE REQUIREMENTS ARE PRIMARILY TECHNICAL IN NATURE AND THE CONDITIONS LISTED ARE INTENDED TO DIRECT ATTENTION TO KNOWN PROBLEM AREAS. THESE REQUIREMENTS ARE DEVELOPED FOR NEW C-E EQUIPMENT THROUGH MAINTENANCE ENGINEERING AND COMPARISON OF SIMILAR INSTALLATION, OR IN-SERVICE C-E EQUIPMENT.

THE INTERVAL BETWEEN THE ACCOMPLISHMENT OF A REQUIREMENT IS INTENDED TO BE THE LONGEST PERIOD OF TIME THAT AN ITEM OR COMPONENT CAN SAFELY OPERATE WITHOUT AN INSPECTION OR OBSERVATION. WHEN THE C-E EQUIPMENT IS OPERATED IN OTHER THAN THE PRIMARY PURPOSE, OR MAJOR USE CLASS, THE NECESSARY REQUIREMENTS HAVE BEEN ADJUSTED ACCORDINGLY, AND THE REQUIREMENTS IDENTIFIED AS TO CLASS OF OPERATION. THESE REQUIREMENTS AND INSPECTION INTERVALS ARE THE MAXIMUM AND SHOULD NEVER BE EXCEEDED. LOCAL CONDITIONS/TYPE OF MISSION, SPECIAL UTILIZATION, GEOGRAPHICAL LOCA- TION, ETC.) MAY DICTATE MORE FREQUENT INSPECTIONS, REPLACEMENT OR MORE THOROUGH INSPECTIONS, THEREFORE, COMMANDS, LOCAL COMMANDERS, AND THEIR MAINTENANCE OFFICERS HAVE THE PREROGATIVE TO INCREASE THE FREQUENCY OR SCOPE OF ANY

REQUIREMENT, AND ARE EXPECTED TO EXERCISE THIS PREROGATIVE.

2. THE INSPECTIONS PRESCRIBED BY THESE WORKCARDS WILL BE ACCOMPLISHED AT SPECIFIED PERIODS BY AIR FORCE ORGANIZA- TIONAL ACTIVITIES WITH ASSISTANCE PROVIDED BY AIR FORCE INTERMEDIATE MAINTENANCE ACTIVITIES AND SPECIALIZED REPAIR ACTIVITIES, WHEN REQUIRED. COMPLIANCE WITH THE PROVISIONS OF THESE WORKCARDS IS REQUIRED TO ASSURE THAT LATENT DEFECTS ARE DISCOVERED AND CORRECTED BEFORE MALFUNCTIONING OR SERIOUS TROUBLE RESULTS.

(CONTINUED ON BACK)

CARD NO. WORK AREA(S) TYPE MECH RQR MECH NO CARD TIME PUBLICATION NUMBER CHANGE NO.

1-02 T031R2-2GRT-106WC-1

WORK UNIT cnnF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK "or"’UNrr cupc INSPECTION

MIN AREA SYS’ SUB INTRODUCTION REQUIREMENTS 1-02

3. THE INSPECTION REQUIREMENTS ARE STATED IN SUCH A MANNER AS TO ESTABLISH WHAT EQUIPMENT IS TO BE INSPECTED, WHEN IT IS TO BE INSPECTED, AND WHAT CONDITIONS ARE TO BE SOUGHT. IN SCOPE, THE REQUIREMENTS ARE DESIGNED TO DIRECT THE ATTENTION OF MAINTENANCE PERSONNEL TO COMPONENTS AND AREAS WHERE DEFECTS MAY EXIST AS A RESULT OF USAGE UNDER NORMAL OPERATING CONDITIONS. THEY ARE NOT INTENDED TO PROVIDE COVERAGE FOR ROUTINE CLEANING, WASHING, ETC., NOR ARE THEY DESIGNED TO LEAD TO THE DETECTION OF ISOLATED DISCREPANCIES THAT MAY OCCUR ON A ONE-TIME BASIS, OR DISCREPANCIES THAT ARE THE RESULT OF CARELESSNESS, ABUSE OR POOR MAINTENANCE PRACTICES. DURING ACCOMPLISHMENT OF THE SPECIFIC REQUIREMENTS DIRECTED BY THESE WORKCARDS, MAINTENANCE PERSONNEL SHOULD OBSERVE BOTH THE EQUIP- MENT BEING INSPECTED AND THE COMPONENTS IN THE SURROUNDING AREA FOR DEFECTS OR IRREGULARITIES NOT WITHIN THE SCOPE OF THE REQUIREMENTS. REQUIREMENTS REQUIRING THE USE OF ELECTRICAL POWER FOR ACCOMPLISHMENT ARE IDENTIFIED

BY A COMMERCIAL @" SYMBOL PRECEDING THE PARAGRAPH NUMBER FOR THE REQUIREMENTS.

4. THE REPLACEMENT SCHEDULE DIRECTS REPLACEMENT OF ITEMS AT A SPECIFIC TIME WHEN A FAILURE WOULD COMPROMISE SAFETY OR OPERATION BEYOND REASONABLE LIMITS OR DEFINITELY CAUSE A MISSION FAILURE. ALSO CONSIDERED ARE ANY HIGH COST ITEMS WHOSE FAILURE WOULD RESULT IN CONDEMNATION AND ANY SHORT LIFE ITEMS WHICH WOULD REQUIRE FREQUENT UNSCHEDULED MAINTENANCE. ITEMS NOT LISTED WILL BE KNOWN AS CONDITIONS ITEMS" AND WILL BE REPLACED ONLY WHEN

NECESSARY.

5. BASE LEVEL REPAIR RESTRICTIONS, LISTS ITEMS (BY WORK UNIT CODE, NOMENCLATURE, FSC, AND PART NUMBER) FOR WHICH BASE LEVEL REPAIR RESTRICTIONS HAVE BEEN ESTABLISHED, AND DESCRIBES THE REPAIRS WHICH ARE NOT AUTHORIZED.

6. THE TIME IN MAN-MINUTES FOR ACCOMPLISHMENT OF REQUIREMENTS REFLECTS ONLY THE TIME REQUIRED FOR INSPECTION OR REPLACEMENT. THIS TIME DOES NOT INCLUDE TIME REQUIRED TO GAIN ACCESS TO THE EQUIPMENT TO FACILITATE ACCOMPLISH- MENT. THOSE FACTORS (PERSONNEL AND EQUIPMENT SHORTAGES, LACK OF PARTS, ADVERSE WORKING CONDITIONS, AND QUALIFI- CATIONS OF PERSONNEL) WHICH WILL DIRECTLY AFFECT THE LENGTH OF TIME OF ANY SCHEDULED MAINTENANCE ARE NOT

INCLUDED BECAUSE THEY CANNOT BE ACCURATELY PREDICTED.

ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK WORK UN T CODE INSPECTION

MIN AREA SYS SUB REQUIREMENTS 1-03

(CONTINUED FROM PREVIOUS CARD)

7. THESE WORKCARDS DO NOT CONTAIN DETAILED INSTRUCTIONS FOR TROUBLESHOOTING TO FIND CAUSES FOR MALFUNCTIONING, NOR DO THEY CONTAIN INSTRUCTIONS FOR REPAIR, ADJUSTMENT, OR OTHER MEANS OF RECTIFYING DEFECTIVE CONDITIONS. PROPER INSTALLATION OF A PIECE OF EQUIPMENT OR ACCESSORY IS NOT NECESSARILY WITHIN THE SCOPE OF THESE WORKCARDS AS ADEQUACY AND COMPLETENESS OF INSTALLATION WILL HAVE BEEN DETERMINED AT THE TIME OF, INSTALLATION. APPLICABLE PORTIONS OF THE APPROPRIATE MAINTENANCE MANUAL SHOULD BE CONSULTED TO OBTAIN HOW TO "MAINTENANCE INSTRUC-

TIONS AS THEY ARE BEYOND THE SCOPE OF THESE WORKCARDS.

8. FOR THE PURPOSE OF CLARIFICATION OF TERMS USED IN THESE WORKCARDS, THE FOLLOWING DEFINITIONS ARE GIVEN:

SPECIFIED REFERS TO A DEFINITE AMOUNT, OPERATION, OR LIMITATION WHICH HAS BEEN ESTABLISHED AND IS CONTAINED IN

APPLICABLE DIRECTIVES.

EVIDENCE IS PROOF OF A SUSPECTED OR EXISTING UNSATISFACTORY CONDITION.

SECURE MEANS THE COMPONENT IS PROPERLY MOUNTED OR ATTACHED TO RELATED EQUIPMENT, INCLUDING APPLICABLE SAFETY-

ING.

ACCESSIBLE IS THE TERM APPLIED TO EQUIPMENT THAT MAY BE INSPECTED WITHOUT FURTHER DISASEMBLY OR REMOVAL OF COVERS, CLOSURES, PANELS, ETC., OTHER THAN THOSE REQUIRED TO ACCOMPLISH THE MORE SPECIFIC REQUIREMENTS APPLICABLE

TO THE PARTICULAR INSPECTIONS.

9. CHANGES AND REVISIONS TO THESE WORKCARDS WILL BE PUBLISHED WHEN NECESSARY TO ADD, DELETE, OR CHANGE FREQUENCY OR SCOPE OF REQUIREMENTS. SUCH CHANGES WILL BE BASED ON FACTUAL DATA ACCUMULATED AS A RESULT OF MAINTENANCE EXPERIENCE WITH THE EQUIPMENT. RECOMMENDATIONS PROPOSING CHANGES TO THESE WORKCARDS SHOULD BE SUBMITTED ON

AFTO FORM 22 IN ACCORDANCE WITH TO 00-5-1 TO THE USING COMMAND HEADQUARTERS.

1-03 T031R2-2GRT-106WC-1

MAN WORK WORK IT CODE INSPECTION

MIN AREA SYS SUB REQUIREMENTS 1-03

NOTE

ALL CORROSION WILL BE TREATED IN ACCORDANCE WITH TO 1-1-689.

wnBKIINITCnnF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK WORK UNIT CODE INSPECTION

MIN AREA SYS SUB INTRODUCTION REQUIREMENTS 1-001

INSPECTION REQUIREMENTS

1. THESE INSPECTION WORKCARDS PROVIDE THE REQUIREMENTS FOR INSPECTION AND WILL BE USED AS A GUIDE IN PERFORMING THE INSPECTION TO INSURE THAT NO ITEM IS OVERLOOKED. THE CARD SIZE AFFORDS CONVENIENT HANDLING BY MAINTENANCE PERSONNEL WHILE PERFORMING AN INSPECTION. WORK ASSIGNMENT INFORMATION IS PROVIDED AT THE BOTTOM OF EACH CARD TO PERMIT ESTABLISHMENT OF A CONVENIENT FILING SYSTEM FOR THE SET OF CARDS AND IN MAKING WORK ASSIGNMENTS TO

MAINTENANCE PERSONNEL.

2. DETAILED INSTRUCTIONS FOR THE USE OF THESE CARDS AND THE DESCRIPTION AND APPLICATION OF OTHER FORMS AND CHARTS TO BE USED IN CONJUNCTION WITH THESE CARDS ARE CONTAINED IN 00-20 SERIES TECHNICAL ORDERS.

1-001 T031R2-2GRT-106WC-1

MIN AREA SYS SUB 1""68 DAY REQUIREMENTS ON IN 1-002

005 @ 1. AMPLIFIER RADIO FREQUENCY AM-6154/GRT-21 (V) BLOWER FOR ADEQUATE AIR FLOW WITH NO INDICATION OF EXCESSIVE NOISE OR

VIBRATION.

@ 2. AMPLIFIER RADIO FREQUENCY AM-6155/GRT-2Z(V) BLOWER FOR ADEQUATE AIR FLOW WITH NO INDICATION OF EXCESSIVE NOISE OR

VIBRATION.

CARD NO. WORK AREA(S) TYPE MECH RQR MECH NO CARD TIME "PUBLICATION NUMBER CHANGE NO.

1-002 :05 T031R2-2GRT-106WC-1

WORK UNIT ranF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK "’UKK UNIT CODE INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-003

0 TRANSMITTING SET AN/GRT-21 (V) AND AN/GRT.22 (V) MINIMUM PERFORMANCE (50 WATT MODE).

1. TEST EQUIPMENT REQUIRED:

A. BIRD 8135 RF LOAD OR EQUIVALENT.

B. BIRD 43 THRU.LINE WATT METER OR EQUIVALENT WITH 25 AND 100 WATT ELEMENTS.

C. HEWLETT-PACKARD HP200AB AUDIO OSCILLATOR OR EQUIVALENT.

2. PLACE THE FOLLOWING CONTROLS AS INDICATED:

CONTROL(EXCITER) SETTING

REMOTE-LOCAL LOCAL

PUSH TO TALK/CARRIER TEST PUSH TO TALK

AC POWER ON-OFF ON

CONTROL(POWER AMPLIFIER) SETTING

HIGH VOLTAGE SWITCH ON-OFF OFF

POWER ON-OFF OFF

TUNE OPERATE OPERATE

(CONTINUED ON BACK)

1-003 :015 T031R2-2GRT-106WC-1

rnnF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK WORK IT CODE INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-003

WARNING

DO NOT DISCONNECT THE COAXIAL OUTPUT CABLE OF THE TRANSMITTER TO THE

ANTENNA WITHOUT FIRST PLACING THE REMOTE-LOCAL SWITCH IN LOCAL POSITION, AND

CARRIER TEST SWITCH TO PUSH-TO-TALK POSITION, TO ASSURE THAT THE TRANSMITTER

WILL NOT BE REMOTELY KEYED WITH ITS LOAD DISCONNECTED. WHILE THE TRANSMITTER

IS PROTECTED FROM EXCESSIVE HIGH LOAD VSWR IN THIS CONDITION, IT IS POSSIBLE

FOR MAINTENANCE PERSONNEL TO SUSTAIN RF BURNS IF HANDLING OPEN CABLE ENDS

WITH THE TRANSMITTER KEYED.

3. CONNECT WATTMETER AND DUMMY LOAD TO EXCITER OUTPUT K1J1 (50-WATT OPERATION). FOR 10 WATT PERFORMANCE TESTS

PROCEED TO CARD 1-005.

4. ON THE EXCITER PLACE TEST SWITCH TO THE FOLLOWING POSITIONS AND OBSERVE TEST METER INDICATIONS.

SWITCH POSITION METER READING

FWD LESS THAN OR EQUAL TO 3,

LESS THAN PERMISSIBLE

RVS LESS THAN OR EQUAL TO

LESS THAN PERMISSIBLE

5. KEY TRANSMITTER IN CW MODE BY PLACING PUSH TO TALK CARRIER TEST SWITCH TO CARRIER TEST. VERIFY AT LEAST 10 WATTS

OUTPUT ON WATTMETER.

6. ON THE EXCITER PLACE TEST SWITCH TO THE FOLLOWING POSITIONS AND OBSERVE TEST METER INDICATIONS.

SWITCH POSITION METER READING

FWD 40 TO 45 (VHF)

40 TO 45 (UHF)

RVS TO 10

WORK UNIT CODE ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK "URK UNIT WOt INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-004

(CONTINUED FROM PREVIOUS CARD)

7. UNKEY THE SET BY PLACING THE PUSH TO TALK CARRIER TEST SWITCH TO PUSH TO TALK.

8. ON THE POWER AMPLIFIER PLACE THE FOLLOWING CONTROLS AS INDICATED:

CONTROL SETTING

POWER ON-OFF ON

HV ON-OFF ON

9. WAIT APPROXIMATELY MINUTE AFTER WHICH HV INDICATOR WILL ILLUMINATE.

10. ON THE POWER AMPLIFIER PLACE THE TEST SWITCH TO THE FOLLOWING POSITIONS AND OBSERVE TEST METER INDICATIONS.

SWITCH POSITION METER READING

FWD LESS THAN OR EQUAL TO

RVS LESS THAN PERMISSIBLE

11. KEY EXCITER ON BY PLACING PUSH TO TALK-CARRIER TEST SWITCH TO CARRIER TEST. VERIFY AT LEAST 50 WATT OUTPUT ON

WATTMETER.

12. ON THE EXCITER PLACE THE TEST SWITCH TO THE FOLLOWING POSITION AND OBSERVE TEST METER INDICATION:

SWITCH POSITION METER READING

FWD 12 TO 35 (VHF)

16 TO 38 (UHF)

CARD NO. WORK AREA(S) TYPE MECH RQR MECH NO CARD TIME "PUBLICATION NUMBER CHANGE NO.

1-004 T031R2-2GRT-106WC-1

wnRKIINITfnnP ELECTRICAL POWER SERVICE FIGURE CARD NO.

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-004

13. ON THE POWER AMPLIFIER PLACE THE TEST SWITCH TO THE FOLLOWING POSITION AND OBSERVE TEST METER.

SWITCH POSITION METER READING

FWO 40 TO 45

RVS 0-10

14. UNKEY EXCITER BY PLACING PUSH TO TALK-CARRIER TEST SWITCH TO PUSH TO TALK POSITION.

15. IF UNABLE TO OBTAIN PROPER READING AT ANY POINT DURING THE FOREGOING ROUTINE, REFERENCE TO 31R2-2GRT-102. THIS COMPLETES THE PERFORMANCE FOR THE 50 WATT MODE. PROCEED TO CARD 1-006 FOR PERCENT OF MODULATION METER CALIBRA-

TION INSPECTION CHECK.

CARD NO. WORK AREA(S) TYPE MECH RQR MECH NO. CARD TIME PUBLICATION NUMBER AND DATE CHANGE NO.

MAN

MIN

WORK

AREA

WORK UNIT CODE

SYS SUB

INSPECTION

REQUIREMENTS

CARD NO. WORK AREA(S) TYPE MECH RQR MECH NO. CARD TIME CHANGE NO.PUBLICATION NUMBER AND DATE

TO 31R2-2GRT-106WC-1

TO 31R2-2GRT-106WC-1

SOLID STATE VANE SWITCH (SSVS) OPERATION CHECK

1. REFER TO TO 31R2-2GRT-102 PARAGRAPH 5-60 FOR CHECK OUT PROCEDURE.

ON OUT 1-004A

1-004A 7

336 DAY

71-004A 31 MARCH 2006

31 MARCH 2006

31R2-2GRT-106WC-1_MC-7.book Page 5 Monday, March 13, 2006 10:27 AM

WORK UNIT CODE F ELECTRICAL POWER"! SERVICE T FIGURE ~j CARD NO.

MAN WORK """" 1" OOE INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-005

EXCITER T-1108(V)/GRT-21(V) AND T-1109(V)/GRT-22(V) MINIMUM PERFORMANCE (10 WATT MODE, POWER AMPLIFIER IS NOT CONNECTED).

1. TEST EQUIPMENT REQUIRED:

A. BIRD 8135 RF LOAD OR EQUIVALENT.

B. BIRD 43 THRU-LINE WATT METER OR EQUIVALENT WITH 25 AND 100 WATT ELEMENTS.

C. HEWLETT-PACKARD HP200AB AUDIO OSCILLATOR OR EQUIVALENT.

2. PLACE THE FOLLOWING CONTROLS AS INDICATED:

CONTROL (EXCITER) SETTING

REMOTE-LOCAL LOCAL

PUSH-TO-TALK/CARRIER PUSH TO TALK

AC POWER ON-OFF ON

(CONTINUED ON BACK)

CARDNO. WORKAREA(S) TYPEMECHRQR "MECH"NoT~CARO"TiME iuBLic*nON"NiiM?Eit CHANoTNO"""

1-005 :10 TO 31R2-2GRT-106WC-1 21 MAY 92 1

ELECTRICAL POWER SERVICE FIQURE CARD NO.

MAN WORK WvnnuNIT (ueprcTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-005

WARNING

DO NOT DISCONNECT THE COAXIAL OUTPUT CABLE OF THE TRANSMITTER TO THE

ANTENNA WITHOUT FIRST PLACING THE REMOTE-LOCAL SWITCH IN LOCAL POSITION.

AND CARRIER TEST SWITCH TO PUSH-TO-TALK POSITION, TO ASSURE THAT THE

TRANSMITTER WILL NOT BE REMOTELY KEYED WITH ITS LOAD DISCONNECTED. WHILE

THE TRANSMITTER IS PROTECTED FROM EXCESSIVE HIGH LOAD VSWR IN THIS CONDI-

TION, IT IS POSSIBLE FOR MAINTENANCE PERSONNEL TO SUSTAIN RF BURNS IF HAN-

DLING OPEN CABLE ENDS WITH THE TRANSMITTER KEYED

3. CONNECT WATT METER AND DUMMY LOAD EXCITER OUTPUT K1J3.

A. ON THE EXCITER PLACE TEST SWITCH TO THE FOLLOWING POSITIONS AND OBSERVE TEST METER INDICATIONS.

SWITCH POSITION METER READING

FWD LESS THAN OR EQUAL TO 3

LESS THAN 0 PERMISSIBLE

RVS LESS THAN OR EQUAL TO 3

LESS THAN 0 PERMISSIBLE

4. KEY EXCITER IN CW MODE BY PLACING PUSH-TO-TALK-CARRIER TEST SWITCH TO CARRIER TEST. VERIFY 10WATT OUTPUT ON

WATTMETER.

5. ON THE EXCITER PLACE TEST SWITCH TO THE FOLLOWING POSITION AND OBSERVE TEST METER INDICATION.

SWITCH POSITION METER READING

FWD 40 (0 45

^ ^ORK WORK UNICODE ,,^T,ON T^^’^T SBivicE ncuRE CARDNO-

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-005A

(CONTINUED FROM PREVIOUS CARD)

6. UNKEY EXCITER AN DISCONNECT TEST EQUIPMENT.

7. IF UNABLE TO OBTAIN PROPER READINGS AT ANY POINT DURING THE FOREGOING ROUTINE, REFERENCE TO 31R2-2GRT-102.

RETURN LOCAL/REMOTE SWITCH AND PUSH-TO-TALK/CARRIER TEST SWITCH TO ORIGINAL OPERATING POSITIONS. THIS COM- PLETES THE PERFORMANCE CHECKS FOR THE 10 WATT MODE. PROCEED TO CARD 1-006 FOR PERCENT OF MODULATION METER

CALIBRATION INSPECTION.

CARDNO. WORKAHEA(S) TYPE MECH DOR MECH HO CARD’TIME’ PUBUCATION NUMBED ""ciwicElio.

1-005A TO 31R2-2GRT-106WC-1 21 MAY 92 1

^ WORK WORKMITCOOE INSPECTION

"CTRICAL POWER SERVICE MURE CARDNO.

MM ARE* SYS SUB 336 DAY HEQUIREMENTS ON OUT 1-006

TRANSMITTING SET AN/GRT-21 (V) AND AWGRT-22 (V) PERCENT OF MODULATION METER CALIBRATION INSPECTION.

1. TEST EQUIPMENT REQUIRED:

A. OSCILLOSCOPE MIL-0-9960C OR EQUIVALENT.

B. AUDIO OSCILLATOR, HP ZOOAB OR EQUIVALENT.

C. TEST PROBES AND CABLES AS REQUIRED.

0. GENERAL RADIO 874-GAL VARIABLE ATTENUATOR.

E. CRYSTAL MIXER, HP 10514A OR EQUIVALENT.

F. SIGNAL GENERATOR, AN/USM 323 OR EQUIVALENT.

G. THRULINE WATTMETER, AN/URM-43 OR EQUIVALENT.

2. PLACE THE FOLLOWING CONTROLS AS INDICATED:

CONTROL (EXCITER) SETTING

REMOTE-LOCAL LOCAL

PUSH TO TALK/CARRIER TEST PUSH TO TALK

AC POWER ON-OFF OFF

CONTROL (POWER AMPLIFIER) SETTING

POWER ON OFF OFF

(CONTINUED ON BACK)

CARD NO. WORKAREA(S) TYPE MECH RQR MECH NO CARD TIME PUBLICATION NUMBER CHANGE NO.

1-006 :15 TO 31R2-2GRT-10eWC-l 4 MAY 94 4

WORK UNIT CODE ELECTRICAl POWER SERVICE FIGURE CARD NO.

MAN WORK W^’KU llcnpE INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-008

HIGH VOLTAGE SWITCH ON-OFF OFF

TUNE OPERATE OPERATE

3. CONNECT TEST EQUIPMENT AS ILLUSTRATED IN FIGURE U1-001.

4. SET 874-GAL TO 60 DB.

5. SET AWUSM 323 FOR A 0 DBM CW RF OUTPUT AT 2 MHZ ABOVE OR BELOW THE OPERATING FREQUENCY ON THE TX UNDER

TEST.

A. PLACE THE FOLLOWING CONTROL?AS INDICATED:

AC POWER ON/OFF-ON

PUSH TO TALK/CARRIER TEST CARRIER TEST

6. INSURE TX OUTPUT POWER IS AT LEAST 10 WATTS.

7. CONNECT (600 OHM BALANCED) OUTPUT OF AUDIO OSCILLATOR (HP 200AB OR EQUIVALENT) SET TO 0 DBM (0.775 VOLTS RMS) FOR A TRANSMITTER STRAPPED FOR HIGH LEVEL AUDIO INPUT AND -27 DBM (35 MV RMS) FOR A TRANSMITTER STRAPPED FOR

LOW LEVEL AUDIO INPUT AT KHZ ACROSS PINS J AND F OF J5.

015 8. JUMPER PINS G AND H OF J5 AND GROUND THIS JUNCTION,

NOTE

FOR EQUIPMENT USING AFCS A3 KEYER CARD, PLACE JUMPER BETWEEN PINS Q AND

H AND BETWEEN PINS A AND M OF J5.

ElECTRICAl POWER SERVICE FIGURE CARD NO.

MAN WORK "0" "HIT CODE INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-006A

(CONTINUED FROM PREVIOUS CARD)

9. ON THE EXCITER, PLACE TEST SWITCH TO SWITCH ENABLE, AND SWITCH TO AF LVL-H POSITION. KEY EXCITER BY PLACING

REMOTE-LOCAL SW TO REMOTE. EXC METER SHOULD INDICATE 18 PLUS OR MINUS (0 DBM).

NOTE

THE METER READING OF AF LVL-H SHOULD BE DISREGARDED IF THE EXCITER A1

COMPRESSION CARD IS JUMPERED FOR THE LOW LEVEL AUDIO INPUT STRAPPING

OPTION.

1-006A T.O. 31R2-2GRT-106WC-1 2 MAR 93 2

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-007

(CONTINUED FROM PREVIOUS CARD)

10. WHILE OBSERVING OSCILLOSCOPE, SLOWLY DECREASE THE THE ATTENUATION OF THE 874-GAL UNTIL THE MODULATED WAVEFORM

APPEARS ON THE OSCILLSCOPE, USING THE FORMULA:

MAX MIN

100%

MAX + E MIN

VERIFY THAT THE MODULATION PERCENTAGE EQUALS 90%. IF NECESSARY, ADJUST MOD LEVEL POTENTIOMETER ON THE EXCITER

FRONT PANEL FOR CORRECT INDICATION.

11. PLACE SWITCH TO THE % MOD POSITION, METER SHOULD READ 30.

12. ADJUST EXCITER FRONT PANEL MOD LEVEL POTENTIOMETER FOR % MOD METER READING OF 20. USING FORMULA IN STEP 10, VERIFY

THAT MODULATED WAVEFORM ON OSCILLOSCOPE EQUALS 80%.

13. IF METER READINGS OF 30 AND 20 DO NOT EQUAL 90 AND 80 PERCENT MODULATION RESPECTIVELY, PERFORM METER CALIBRATION

IN ACCORDANCE WITH T.O. 31R2-2GRT-102.

14. READJUST THE FRONT PANEL MOD LEVEL POTENTIOMETER FOR 90% ON THE SCOPE AND A METER READING OF 30. THEN PLACE SWITCH TO A POSITION OTHER THAN % MOD (IF LEFT IN THE MOD POSITION, THE METER WILL PEG NEGATIVE AFTER THE EXCITER

IS UNKEYED). UNKEY THE EXCITER BY PLACING REMOTE-LOCAL SW TO LOCAL.

1-007 T031R2-2GRT-106WC-1

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-007

15. ON THE POWER AMPLIFIER PLACE THE FOLLOWING CONTROLS AS INDICATED:

CONTROL SETTING

POWER ON-OFF ON

HV ON OFF ON

TUNE OPERATE OPERATE

WAIT APPROXIMATELY MINUTE FOR HV INDICATOR TO ILLUMINATE.

16. KEY THE EXCITER AS IN STEP AND SLOWLY ADJUST ATTENUATION OF THE 874 GAL UNTIL THE MODULATION ENVELOPE IS DISPLAYED ON THE OSCILLOSCOPE. WAVEFORM SHOULD EQUAL 90% AND BE UNDISTORTED AND SYMMETRICAL. UNKEY THE

EXCITER AS IN STEP 14.

17. THIS COMPLETES THE CHECK. RETURN THE EQUIPMENT TO NORMAL OPERATION.

PUBLICATION NUMBER INSPECTION REQUIREMENTS FIGURE CHANGE NO. CARD NO.

T031R2-2GRT-106WC-1 336 DAY U1-001 1-008

a? |-\M^ 8[--| ^ s w^a n " s oa--i ? ,-1-in:3 a z ^ ]-3-^ i" d ^^n s c

,___E a u s M 1--------------------I .------F "-0 ,----I ’-’--’a :

+/- uj

^ _____n___ s 3

^ ar-rq------’=--1-----^^--^ s ? w? 5 g I--’ t= ":

M in y <. ccu. ^ a !< 5 S"; g t? j

^ S <? 5 <:u <^ [_____i s- P M o T^I80 3p s| $ S o Eo’----’-^ F9002034

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-009

FREQUENCY CHECK, 10 OR 50 WATT MODE.

WARNING

DO NOT DISCONNECT THE COAXIAL OUTPUT CABLE OF THE TRANSMITTER TO THE

ANTENNA WITHOUT FIRST PLACING THE REMOTE-LOCAL SWITCH IN LOCAL POSITION, AND

CARRIER TEST SWITCH TO PUSH-TO-TALK POSITION, TO ASSURE THAT THE TRANSMITTER

WILL NOT BE REMOTELY KEYED WITH ITS LOAD DISCONNECTED. WHILE THE TRANSMITTER

IS PROTECTED FROM EXCESSIVE HIGH LOAD VSWR IN THIS CONDITION, IT IS POSSIBLE

FOR MAINTENANCE PERSONNEL TO SUSTAIN RF BURNS IF HANDLING OPEN CABLE ENDS

WITH THE TRANSMITTER KEYED.

1. TEST EQUIPMENT REQUIRED:

A. BIRD 8135 RF LOAD OR EQUIVALENT.

B. GENERAL RADIO 874-GAL VARIABLE ATTENUATOR OR EQUIVALENT.

C. HP5245L FREQUENCY COUNTER WITH 5253B PLUG IN UNIT OR EQUIVALENT.

2. CONNECT EQUIPMENT JACK K1J3 (10-WATT CONFIGURATION) OR K1J1 (50-WATT CONFIGURATION) TO THE INPUT OF THE VARIABLE ATTENUATOR (GENERAL RADIO 874-GAL) OR EQUIVALENT. CONNECT THE VARIABLE ATTENUATOR DIRECT OUTPUT TO THE RF DUMMY LOAD (BIRD 8135 OR EQUIVALENT) AND THE ATTENUATED OUTPUT TO THE FREQUENCY COUNTER INPUT. SET VARIABLE ATTENUATOR

TO 60 DB.

(CONTINUED ON BACK)

1-009 :05 TO 31R2-2GRT-106WC-1

MIN AREA SYS SUB 336 DAY REQUIREMENTS ON OUT 1-009

3. SET THE CONTROLS AS FOLLOWS:

A. EXCITER.

(1) REMOTE-LOCAL TO LOCAL.

(2) PUSH-TO-TALK-CARRIER TEST TO PUSH-TO-TALK.

(3) AC POWER ON-OFF TO ON.

B. POWER AMPLIFIER.

(1) POWER OFF (ON FOR 50 WATT).

(2) HIGH VOLTAGE OFF (ON FOR, 50 WATT).

4. KEY EXCITER BY PLACING PUSH-TO-TALK CARRIER TEST SWITCH TO CARRIER TEST AND REDUCE VARIABLE ATTENUATOR SETTING UNTIL FREQUENCY COUNTER STABILIZED. FREQUENCY SHOULD READ DESIRED FREQUENCY +/- 0.001% FOR CRYSTAL OSCILLATOR

OR+/- 0.0005% FOR SYNTHESIZER-OSCILLIATOR.

5. UNKEY EXCITER BY PLACING PUSH-TO-TALK/CARRIER TEST SWITCH IN THE PUSH-TO-TALK POSITION.

6. IF PROPER METER READINGS ARE OBTAINED, REMOVE ALL TEST EQUIPMENT. PLACE EQUIPMENT ON A PROPER ANTENNA, THEN RETURN LOCAL/REMOTE SWITCH AND PUSH-TO-TALK/CARRIER TEST SWITCH TO ORGINAL OPERATING POSITIONS. THIS COMPLETES

THE PERFORMANCE CHECKS FOR THE 10 OR 50 WATT MODE.

wnRKIINITrnnF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK WORK UNIT WOE INSPECTION

MIN AREA SYS SUB 336 DAY REQUIREMENTS OFF OUT 1-010

TRANSMITTING SET AN/GRT-21(V) AND AN/GRT-22(V) AND EXCITER T-1108(V)/GRT-21(V) AND T-1109(V)/GRT-22(V), VISUAL INSPECTION FOR

THE FOLLOWING CONDITIONS.

WARNING

INSURE ALL POWER TO THE UNIT UNDER INSPECTION IS OFF BEFORE PROCEEDING.

1. DUST.

2. DIRT

3. CORROSION PREVENTION AND CONTROL

NOTE

CORRECTIVE ACTION WILL BE INITIATED IMMEDIATELY WHEN CORROSION IS FOUND TO

PREVENT FURTHER DETERIORATION OF THE EQUIPMENT.

(CONTINUED ON BACK)

CARD NO. WORK AREA(S) TYPE MECH RQR MECH NO CARD TIME" PUBLICATION NUMBER CHANGE NO.

1-010 :15 TO 31R2-2GRT-106WC-1

MIN AREA SYS SUB 336 DAY REQUIREMENTS OFF OUT 1-010

CORROSION IS THE DETERIORATION OF A MATERIAL BY CHEMICAL OR ELECTRO-CHEMICAL REACTION WITH ITS ENVIRON- MENT. INSPECT THE COMPLETE SYSTEM FOR EVIDENCE OF CORROSION. PROCEDURES FOR IDENTIFICATION, ISOLATION AND

CONTROL OF CORROSION ARE IDENTIFIED IN THE FOLLOWING TECHNICAL ORDERS:

TO 1-1-689 PREVENTION AND CONTROL OF CORROSION AND FUNGUS IN COMMUNICATIONS, ELECTRONIC, METEOROLOGICAL, ANDAVIONIC EQUIPMENT.

TO 1-1-691 AIRCRAFT WEAPONS SYSTEMS CLEANING AND CORROSION CONTROL.

TO 1-1-8 APPLICATION OF ORGANIC COATINGS, AEROSPACE EQUIPMENT.

4. TIGHTNESS OF CONNECTORS AND LEADS.

MIN AREA SYS SUB 336 DAY REQUIREMENTS OFF OUT 1-011

TRANSMITTING SET AN/GRT-21(V) AND AN/GRT-22(V), EQUIPMENT GROUNDING CHECKS.

1. INSPECT FACILITIES AND EQUIPMENT GROUNDING PER TO 31-10-24, CHAPTERS 3, AND 10.

1-011 :10 T031R2-2GRT-106WC-1

wniWIIMITCnnF ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK WOHKU ITCODE INSPECTION

MIN AREA SYS SUB INTRODUCTION REQUIREMENTS 2-001

SERVICING AND LUBRICATION

1. THESE INSPECTION WORKCARDS PROVIDE THE REQUIREMENTS FOR SERVICING/LUBRICATION AND WILL BE USED AS A GUIDE IN PERFORMING THE INSPECTION TO INSURE THAT NO ITEM IS OVERLOOKED. THE CARD SIZE AFFORDS CONVENIENT HANDLING BY MAINTENANCE PERSONNEL WHILE PERFORMING AN INSPECTION. WORK ASSIGNMENT INFORMATION IS PROVIDED AT THE BOTTOM OF EACH CARD TO PERMIT ESTABLISHMENT OF A CONVENIENT FILING SYSTEM FOR THE SET OF CARDS AND IN MAKING WORK

ASSIGNMENTS TO MAINTENANCE PERSONNEL.

2. DETAILED INSTRUCTIONS FOR THE USE OF THESE CARDS AND THE DESCRIPTION AND APPLICATION OF OTHER FORMS AND CHARTS TO BE USED IN CONJUNCTION WITH THESE CARDS ARE CONTAINED IN 00-20 SERIES TECHNICAL ORDERS.

2-001 T031R2-2GRT.106WC-1

ELECTRICAL POWER SERV.CE FIGURE CARD NO.

MIN AREA SYS SUB 84 DAY REQUIREMENTS OFF OUT 2-002

AMPLIFIER, RADIO FREQUENCY AM-6154/GRT-21(V) AND AM-6155/GRT-22(V) CLEANING.

WARNING

OBSERVE THAT ALL POWER IS OFF BEFORE PROCEEDING.

1. MATERIALS REQUIRED:

A. DETERGENT AND WATER.

B. UTENSIL IN WHICH TO IMMERSE FILTER.

C. EZ KLEEN RP SUPER FILTER COAT P/N: 411 FSN: 4130-00-860-0042 (OPTIONAL).

D. FOAM FILTER ELEMENT P/N: 0945-M/100 (OPTIONAL).

E. VACUUM CLEANER.

F. SOFT BRISTLE BRUSH.

2. REMOVE FRONT FILTER FROM UNIT BY LOOSENING TWO PHILLIPS HEAD SCREWS. REMOVE THE FOAM FILTER ELEMENT. THE ELEMENT MAY BE CLEANED WITH A DETERGENT AND WATER SOLUTION, RINSED IN WATER AND LET DRY. IF THE FOAM FILTER

IS NOT AVAILABLE, THE METAL MESH FILTER MAY BE CLEANED AND REUSED AS FOLLOWS:

A. GENTLY TAP FILTER TO REMOVE LOOSE DIRT.

B. FLUSH DIRT FROM SIDES WITH DETERGENT AND WATER SOLUTION.

C. RINSE FILTER IN CLEAR WATER AND LET DRY.

CARD NO. WORKAREA(S) TYPE MECH ROB MECH NO CARD TIME PUBLICATION NUMBER ’CHANGENO.

2-002 :15 TO 31R2-2GRT-106WC-1 23 OCTOBER 95 6

^ WORK WOBK UNIT CODE

ELECTRICAL POWER SERVICE RGURE CARD NO.

MIN AREA SYS SUB 84 DAY REQUIREMENTS OFF OUT 2-002

D. RECOAT THE FILTER WITH KZ KLEEN RP SUPER FILTER COAT.

3. VACUUM CLEAN AND WIPE ALL DIRT FROM FANS AND OPENING.

A. REMOVE FAN MODULE AND BLOW THE SQUIRREL CASE OUT.

B. PERFORM A GOOD VISUAL INSPECTION FOR BROKEN WIRES, BURNT COMPONENTS, AN/OR LOOSE CONNECTIONS.

4. REPLACE THE FOAM FILTER ELEMENT ON THE FRONT OF THE METAL MESH FILTER. REPLACE FILTER ON THE UNIT AND TIGHTEN \

THE TWO PHILLIPS-HEAD SCREWS.

5. REMOVE TUNED CAVITY AND INSPECT AIR FLOW PATH FOR DIRT. GLEAN AS NECESSARY.

6. REMOVE REAR FILTER FROM UNIT BY LOOSENING FOUR PHILLIPS-HEAD SCREWS AND GENTLY TAP FILTER TO REMOVE LOOSE

DIRT.

7. REMOVE PLATE COVERING THE AIRWAY BETWEEN THE BLOWER ASSEMBLY AND TUNABLE FILTER BY LOOSENING THE THREE

PHILLIPS SCREWS.

A. PULL-OUT AND CLEAN FILTER BY WASHING IN DETERGENT AND WATER SOLUTION, THEN RINSE IN CLEAR WATER AND LET

DRY. DO NOT APPLY FILTER COAT.

8. REPLACE FILTERS ON UNIT AND TIGHTEN PHILLIPS-HEAD SCREWS.

9. REINSTALL FAN MODULE.

10. REINSTALL CAVITY.