attach_13_P6679.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 15-DEC-09 1401-R-E

P 6679 May 17, 2012 3

T700 Vacco Anti Icing Starting Bleed Valve (AISBV), Body, PNs 83540-1 and 86126-1 Piston Bearing Bore Diameter Repair.

INTERIM USE OF THIS MEO IS AUTHORIZED

UNTIL AFFECTED DOCUMENT IS UPDATED.

NO

YES

T700 DAX

DMWR 55-2995-231 DTD 15 MAY 1983 TN 108450 4 MAY 2012

DOCUMENT CHANGE IS REQUIRED

To provide instruction for the repair of the piston bearing bore diameter using build up of hard anodize coating.

This repair was submitted to the Army by AAR as a VECP.

Kurt Ryder (Camber Corp)

NOLL.GERALD.S

TEVEN.12311769

Digitally signed by

NOLL.GERALD.STEVEN.1231176922

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=NOLL.GERALD.STEVEN.1231176922 Date: 2012.05.16 14:37:39 -05'00'

Michael Vourcos G. Steven Noll PUBLICATION CHANGE REQUEST: REQUEST THAT THE FOLLOWING DATA BE INCLUDED IN THE NEXT

CHANGE OR REVISION TO THE PUBLICATION IDENTIFIED ABOVE.

WP NO. PAGE

NO.

PARA-

GRAPH

FIGURE/

TABLE

NO.

CHANGES

(EXACT WORDING OF CHANGES MUST BE GIVEN)

3-58

3-58

3-51.1.

3-10.1 INSERT Figure 3-10.1 ON PG. #3 OF THIS MEO after paragraph 3-51.k

INSERT before paragraph 3-52."

a. Disassemble valve to the level necessary to perform the following repair (valve body only) on the valve body assembly. Refer to figure 3-10.1.

b. PRE-GRIND ID -E- (0.5010 - 0.5025")

1. Indicate ID -E- to within 0.0001 inch TIR

2. Pre-grind ID -E- to remove damage, (0.5010 - 0.5025 inch) 0.5025 inch maximum

3. Break all sharp edges unless otherwise noted

4. Clean thoroughly IAW standard shop procedures

5. Visually examine for discolorations due to overheating

6. Record maximum pre-grind size:

Formatted Cont. Sheet

Continuation Sheet

MEO NO.

PAGE of

WP NO. PAGE

NO.

PARA-

GRAPH

FIGURE/

TABLE

NO.

CHANGES

(EXACT WORDING OF CHANGES MUST BE GIVEN)

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

3-58 3-51.1. (continued)

c. NDT

1. Fluorescent penetrant inspect per ASTM-E-1417. NO CRACKS

ALLOWED.

d. HARD ANODIZE COAT

1. Clean thoroughly IAW standard shop procedures

2. Mask all parts not to be anodized

3. Hard anodize per MIL-A-8625 Type III, class I; allow ample buildup for finish grind

4. Clean thoroughly IAW standard shop procedures

e. FINISH GRIND

1. Indicate ID -E- to within 0.0001 inch TIR

2. Finish grind ID -E- 0.4991 to 0.5003 inch. 8 RMS surface finish required

3. Clean thoroughly IAW standard shop procedures

4. Visually inspect ID -E-

5. Record finish grind size:

f. NDT

1. Fluorescent penetrant inspect per ASTM-E-1417. NO CRACKS

ALLOWED.

P 6679

Continuation Sheet

MEO NO.

PAGE of

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

P 6679

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P 6679

DMWR 55-2995-231 DTD 15 MAY 1983 T700 AISBV

NO