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TM 5-4210-220-12
4-15. AUXILIARY POWER UNIT - Continued
4-15.11 Engine Crankshaft and Camshaft - Continued
INSTALLATION
(1)
Install new oil seals in crankcase cover and
bearing end plate.
(2)
Install crankcase thrust washer on inner wall of
block. If necessary hold in place with white
grease (item 34, Appendix E).
(3)
Smear lubricating oil (Item 17, Appendix E) on
central bushing.
(4)
Carefully install crankshaft through bushing. Do
not damage bushing with crankshaft gear.
(5)
Smear lubricating oil (item 17, Appendix E) on
bearing end plate bushing.
(6)
Install second thrust washer over crank and push
bearing end plate over crankshaft. Ensure thrust
washer keys with end plate. Be sure oil seal is
not forced and therefore damaged.
(7)
Install two bolts in threaded holes of end plate.
(8)
Adjust
crankshaft
end
float
by
tightening/
loosening two bolts in end plate. End float
should be 0.004 - 0.008 in. (0.10 - 0.20 mm).
(9)
When end float is correct, measure end
plate/crankcase clearance. Select gasket(s) of
suitable thickness (Gaskets are available in
thickness of 0.004, 0.008, 0.0124, 0.016 in.
(0.10, 0.20, 0.30, 0.40 mm).
(10)
Remove bearing end plate and bolts. Place
selected gasket over end plate and install on
crankcase as detailed in step 6 preceding.
Tighten nuts to 22 ft lb (29 Nm). Check
crankshaft end play and readjust as required.
(11)
Lift hinged tappets and install camshaft into block
bore Match timing mark on crankshaft gear to
mark on camshaft gear
(12)
If timing marks are not marked on gears proceed
as in steps 13 and 14 following. Otherwise
proceed to step 15.
4-180
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