D2043.pdf

MAINTENANCE ENGINEERING ORDER

(AMCOM Reg. 750-2)

MEO NO.

DATE PAGE 1 of

TITLE Tolerances Unless otherwise noted, dimensions are in inches and tolerances are:

Fractional ………………… ± 1/32 Decimal ………………... ± 0.010 Angular ………………… ± ½°

APPLICABILITY CSI Critical Characteristic Affected?

Impact Statement Attached?

REFERENCES FOR RDECOM USE ONLY

DOCUMENT(S) AFFECTED

PURPOSE OR PROBLEM

PROJECT ENGINEER ENGINEERING REVIEW ENGINEERING RELEASE

MED FORM 5-DEC-09 1401-R-E

D 2043 Jan 11, 2017 5

Part Number change for Hydraulic Accumulator Assembly 375 Cubic Inch, P/N 28 60003-3 (145HS654-7)

Technical

INTERIM USE OF THIS MEO IS AUTHORIZED

UNTIL AFFECTED DOCUMENT IS UPDATED.

MEO CHANGE TYPE

3) High - Has a business or process impactPRIORITY IMPLEMENTATION CATEGORY

CH47 DAA

DMWR 55-1650-412 (05 MAR 2014) TN 128830

TN 164902

DOCUMENT CHANGE IS REQUIRED Verification: Hands-On Table-Top None

Update part number and parts list.

CASTILLO.NO

EL.1089736990

Digitally signed by

CASTILLO.NOEL.1089736990

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=CASTILLO.NOEL.1089736990 Date: 2017.01.10 13:13:03 -06'00'

CAREL.PAMELA.KA

Y

LYONS.1125864534

Digitally signed by CAREL.PAMELA.KAY

LYONS.1125864534

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=CONTRACTOR, cn=CAREL.PAMELA.KAY

LYONS.1125864534

Date: 2017.01.10 13:01:29 -06'00'

Pamela Carel (Torch)

PETER.ROBERT.

ARTHUR.JR.108

7823942

Digitally signed by

PETER.ROBERT.ARTHUR.JR.1087823942

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=PETER.ROBERT.ARTHUR.JR.108782394 Date: 2017.01.10 14:27:33 -06'00'

Noel Castillo Robert A. Peter, Jr.

PUBLICATION CHANGE REQUEST: REQUEST THAT THE FOLLOWING DATA BE INCLUDED IN THE NEXT

CHANGE OR REVISION TO THE PUBLICATION IDENTIFIED ABOVE.

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Cover i iii

LIST

Change part number 28-60003-3 to read: "28 60003-3 and 28 60003-5"

Change part number 28-60003-3 to read: "28 60003-3 and 28 60003-5"

Change Fig 3-3 part number 28-60003 to read: "28 60003-3 and 28 60003-5"

Change all Figure F-1 P/Ns that start with "28-XXXXX-X" to read:

"28 XXXXX-X"

Distribution Statement D:- Distribution authorized to Department of Defense and U.S. DoD contractors only to protect critical technology effective as of 26 June 2014. Other requests for this document must be referred to U.S. Army Aviation and Missile Research, Development and Engineering Center, ATTN: RDMR -AEM , Corpus Christi, TX 78419-5211

MED FORM 24 FEB 2016

Continuation Sheet

MEO NO.

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MED FORM 15-DEC-09 1401-R-E

1-1

1-3

1-7

2-1

2-2

2-8

3-21

1-1.

1-6.

1-8.f.

3-18.

Table 2-1.

2-2.

2-3.

Change second sentence to read: "They apply to the Hydraulic Accumulator, Self-Displacing, part numbers 28 60003-3 and 28 60003-5 (145HS654-7) (Figure 1-1), and, in case of conflict, take precedence over all other documents pertinent to its overhaul and inspection. The part number 28 60003-4 (145HS654-6) refers to the 28 60003-3 accumulator with mounting plate. The part number 28 60003-6 (145HS654-6) refers to the 28 60003-5 accumulator with mounting plate."

Delete "York Industries."

Change part number 28-60003 to read: "28 60003-3 and 28 60003-5"

Change part number 28-40049-7 to read: "28 40049-7"

No. 6 Change to read:

"Accumulator Assembly Fixture 28 80001 or equivalent"

No. 7 Change to read:

"High Pressure Piston Insertion Tool 28 80049 or equivalent"

No. 8 Change to read:

"Blind Housing Installation Tool 28 80051 or equivalent"

No. 9 Change to read:

"Low Pressure Piston Removal 28 80004 or equivalent"

No. 4 Change to read:

"Piston Rod Vent Port Adapter 28 80026 or equivalent"

No. 5 Change to read:

"Vent Plug Adapter 28 80027 or equivalent"

Change all P/Ns that start with "28-XXXXX-X" to read: "28 XXXXX-X"

Change sentence to read:

"The Illustrated Parts Breakdown of Figure 3-3 identify the individual components of the Self-Displacing Accumulator, Part Number 28 60003-3 and 28 60003-5."

MED FORM 24 FEB 2016

D 2043

Continuation Sheet

MEO NO.

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MED FORM 15-DEC-09 1401-R-E

3-24

E-1

F-1

E-1

E-3

3-5

APP E

APP F

Replace Table 3-5 with pages 4 and 5 of this MEO.

Change paragraph to read:

"SCOPE. This appendix covers instructions for modifying self-displacing hydraulic accumulators."

Add paragraph to read:

"MODIFICATION. The self-displacing hydraulic accumulator may be modified from P/N 28 60003-1 to P/N 28 60003-5 or from P/N 28 60003-3 to P/N 28 60003-5 as follows:

a. Disassemble accumulator per Chapter 3 of the DMWR.

b. Replace high pressure piston, P/N 28 40352-7, with high pressure piston, P/N 28 40212-8.

c. Re-identify accumulator by installing new IUID label with required information."

Change all P/Ns in PMB processing Sheet that start with "28-XXXXX-X" to read: "28 XXXXX-X"

Change Nomenclature for Part Number 28 40097-7 to read:

"Blind Housing"

Change Nomenclature for Part Number 28 40099-7 to read:

"High Pressure Housing"

MED FORM 24 FEB 2016

Continuation Sheet

MEO NO.

PAGE of

MED FORM 15-DEC-09 1401-R-E

INDEX

NO. P/N DESCRIPTION QTY

USABLE

ON CODE

28 60003-4 ACCUMULATOR ASSEMBLY, HYDRAULIC 1 A

- 28 60003-3 Accumulator, Hydraulic (w/o mount plate assy) 1 A

28 60003-6 ACCUMULATOR ASSEMBLY, HYDRAULIC 1 B

- 28 60003-5 Accumulator, Hydraulic (w/o mount plate assy) 1 B -1 28 40104-7 . Retainer Ring 1 A/B -2 28 40017-8 . Vent Plate Assembly 1 A/B -3 28 40092-7 . Filter Assembly 1 A/B -4 MS28775-006 . Packing, Preformed 1 A/B -5 28 40025-7 . Plug, Rod Retainer 1 A/B -6 28 40030-7 . Key, Piston Rod 2 A/B -7 28 40026-7 . Nut, Piston Rod 1 A/B -8 28 40022-7 . Housing, Low Pressure 1 A/B -9 MS28775-253 . Packing, Preformed 1 A/B -10 7429-MT-2T . Backup Ring 1 A/B -11 28 40021-7 . Piston, Low Pressure 1 A/B -12 MS28775-114 . Packing, Preformed 1 A/B -13 MS27595-114 . Backup Ring 2 A/B -14 28 40042-7 . Ring Rider, Low Pressure Piston 1 A/B -15 37022-429-02 AMT . Seal Ring 1 A/B -16 28 40023-7 . Manifold 1 A/B -17 37022-114-02 AFT . Seal Ring 1 A/B

-18 36666-250 preferred, TF74C-250 alternate . Backup Ring 4 A/B

-19 MS28775-250 . Packing, Preformed 2 A/B -20 28 40352-7 . Piston, High Pressure 1 A -20 28 40212-8 . Piston, High Pressure 1 B -21 28 40028-7 . Rod, Piston 1 A/B -22 28 40095-7 . Bearing, High Pressure, Piston 2 A/B -23 28 40102-7 . Seal Ring 2 A/B -24 28 40037-8 . Wiper, Piston 1 A/B -25 28 40047-7 . Ring, Locking 1 A/B -26 37022-111-02 AMT . Seal Ring 1 A/B -27 28 40100-7 . Housing, High Pressure, Assembly 1 A/B -28 28 40099-7 .. Housing, High Pressure 1 A/B -29 28 40097-7 .. Blind Housing 1 A/B -30 28 40039-7 .. Adapter, Gas Port 1 A/B -31 MS28775-010 .. Packing, Preformed 1 A/B

Table 3-5. Accumulator Assembly Parts List

MED FORM 24 FEB 2016

Continuation Sheet

MEO NO.

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MED FORM 15-DEC-09 1401-R-E

-32 MS9887-16 . Bolt 2 A/B -33 28 40001-7 . Mounting Adapter Assembly 1 A/B -34 28 40035-7 .. Insert Assembly 1 A/B -35 MS16625-4125 .. Ring, Retaining 1 A/B -36 28 40038-7 .. Spacer, High Pressure 1 A/B -37 28 40034-7 .. Tube, Transfer, High Pressure 1 A/B -38 MS28775-118 .. Packing, Preformed 2 A/B -39 MS27595-118 .. Backup Ring 4 A/B -40 MS16625-4150 .. Ring, Retaining 1 A/B -41 28 40036-7 .. Spacer, Low Pressure 1 A/B -42 28 40033-7 .. Tube, Transfer, Low Pressure 1 A/B -43 MS28775-121 .. Packing, Preformed 2 A/B -44 MS27595-121 .. Backup Ring 4 A/B -45 28 40040-7 .. Adapter, Low Pressure 2 A/B -46 MS28775-116 .. Packing, Preformed 1 A/B -47 28 40041-7 .. Adapter, Low Pressure 2 A/B -48 MS28775-120 .. Packing, Preformed 1 A/B -49 28 40049-7 . Plate, Warning 1 A/B -50 MS28775-015 . Packing, Preformed 1 A/B

-51 28 40363 Data Plate, Unique Identification Data (IUID) UII (Local Manufacture) 1 A/B

-52 28 40362 Data Plate, Unique Identification Data (IUID) PNR (Local Manufacture) 1 A/B

MED FORM 24 FEB 2016