TM 5-4320-300-145-11.FUEL PUMP ASSEMBLY (CONT) -Location/ItemActionRemarks13. Pump drive gearand shaftInstall pump drive gear over round end ofdrive shaft so slot in gear will face plain endof shaft. Press gear beyond gear retainingball detent. Then place ball in detent andpress gear back until end of slot contacts ball.Lubricate pump shaft and insert square end ofshaft into opening at gear side of pump bodyand through the oil seals.14. Pump driven gearand shaftPlace driven shaft and gear assembly in pump body.NOTEDriven gear must be centered on shaft to give proper end clearance. Also, chamfered end of gearteeth 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.CAUTIONDamage to pump gears and shaft may occur if sealant is squeezed into the gear compartment.Use sealant sparingly.15. Pump bodyApply a thin coat of sealing compound (Militaryand coverSpecification MIL-S-45180) on face of pump coveroutside of the gear pocket area. Then place coveragainst pump body with two dowel pins in coverentering holes in pump body. Cover can be installedin only one position over the two shafts.NOTEThe coating of sealant must be extremely thin since the pump clearances have been set up on thebasis of metal-to-metal contact. Too much sealant could increase the clearances and affect pumpefficiency.5-33
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