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TM 10-4320-351-14
SECTION II. DIRECT SUPPORT MAINTENANCE PROCEDURES
5.4 REPAIR OF FUEL TRANSFER PUMP.
5.4.1 Replace Fuel Transfer Pump Inlet O-Ring. (Refer to figure 5-3.)
This task consists of:
a.
Removal
b.
Installation
INITIAL SET-UP:
Tools:
Materials/Part Required:
Key, Socket Head Screw, 5/6 in.
Petrolatum (Appendix F, Section II, Item 10)
(Appendix B, Section III, Item 3)
Anti-Seize Compound, Molybdenum Disulfide
Wrench, Combination, 7/16 in.
(Appendix F, Section II, Item 3)
(Appendix B, Section III, Item 3)
Dry Cleaning Solvent
Goggles
(Appendix F, Section II, Item 2)
(Appendix B, Section III, Item 2)
Washer, Lock (Appendix I, Item 68)
Gloves (Appendix B, Section III, Item 2)
O-Ring (Appendix I, Item 56)
General Safety Requirements:
Equipment Condition:
Fuel transfer pump removed from pump-engine
WARNING
module (para. 4.12.1)
Fuels are toxic and flammable. Do not get on
person Or clothing. Work in well ventilated
area. Do not Smoke. Ensure equipment is
well grounded.
a.
Removal.
NOTE
Mark inlet (1) and pump housing (2) to establish assembly orientation.
(1)
Remove inlet (1) from pump.
(a)
Remove the six socket head screws (3), lock washers (4) and flat washers (5) that secure the inlet to
the pump. Discard lock washers (4).
(b)
Install three, 1/4 -28 x 1 1/2 inch jack bolts in the threaded holes spaced around the inlet
circumference. Remove inlet from housing by alternately tightening the jack bolts until inlet is free.
Remove jack bolts from inlet.
(2)
Remove O-ring (6) from inlet and discard.
(3)
Inspect impeller (7) and housing interior for damage. Minor scratches and dents will not affect operation. If
severe damage is noted, report to supervisor.
(4)
Inspect and clean O-ring groove as required. Any debris or foreign material may prevent the O-ring from
seating properly.
5-7
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