TM 5-4320-300-14
5-11.
FUEL PUMP ASSEMBLY (CONT) -
Location/Item
Action
Remarks
13. Pump drive gear
and shaft
Install pump drive gear over round end of
drive shaft so slot in gear will face plain end
of shaft. Press gear beyond gear retaining
ball detent. Then place ball in detent and
press gear back until end of slot contacts ball.
Lubricate pump shaft and insert square end of
shaft into opening at gear side of pump body
and through the oil seals.
14. Pump driven gear
and shaft
Place driven shaft and gear assembly in pump body.
NOTE
Driven gear must be centered on shaft to give proper end clearance. Also, chamfered end of gear
teeth of production gear must face pump body. If a service replacement gear with a slot is used,
slot must face toward pump cover.
Lubricate gear and shaft with clean VV-F-800 fuel oil.
CAUTION
Damage to pump gears and shaft may occur if sealant is squeezed into the gear compartment.
Use sealant sparingly.
15. Pump body
Apply a thin coat of sealing compound (Military
and cover
Specification MIL-S-45180) on face of pump cover
outside of the gear pocket area. Then place cover
against pump body with two dowel pins in cover
entering holes in pump body. Cover can be installed
in only one position over the two shafts.
NOTE
The coating of sealant must be extremely thin since the pump clearances have been set up on the
basis of metal-to-metal contact. Too much sealant could increase the clearances and affect pump
efficiency.
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