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TM 10-4320-351-14
4.12 FUEL TRANSFER PUMP MAINTENANCE.
4.12.1 Replace Fuel Transfer Pump. (Refer to figure 4-9.)
This task consists of:
a. Removal
b. Installation
INITIAL SET-UP:
Tools:
Materials/Parts Required:
Tool Kit, General Mechanics
Washer, Lock (Appendix I, Item 65)
(Appendix B, Section III, Item 1)
General Safety Requirements:
Equipment Condition:
Pumpage overtemperature sensor removed
WARNING
(para. 4.9.2)
Inlet manifold removed (para. 4.10.1)
·
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.
(1)
Remove the four bolts (1), flat washers (2), lock washers (3) and jam nuts (4) that secure the fuel transfer
pump (5) to the module sub-frame. Discard the lock washers (3).
(2)
Disconnect the exhaust line (6) from the engine module, slide the fuel transfer pump away to separate the
flexible coupling (7), then lift fuel transfer pump from module.
(3)
Loosen the set screw (8) and slide the flexible coupling (7) from the fuel transfer pump input shaft. Remove
key (9) from shaft.
b.
Installation.
(1)
Place key (9) in slot in fuel transfer pump (5) input shaft and install the flexible coupling (7) on the input
shaft of the fuel transfer pump (5). Install and tighten set screw (8). Ensure a gap of approximately 1/16
inch (1.6 mm) between splined flexible coupling adapter and shaft nut cover (10).
CAUTION
Installation of a fuel transfer pump includes alignment of the flexible coupling
adapters on the fuel transfer pump and the engine. Damage to the engine or fuel
transfer pump may result from misalignment.
(2)
Position the fuel transfer pump (5) on the module sub-frame and mate the flexible coupling (7) on the pump
with the splined flexible coupling adapter (11) on the engine.
4-22
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