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c. Cleaning, Inspection, and Repair.
(1) Clean front cover with solvent (FED. SPEC. PD-680) and dry thoroughly.
(2) Inspect for cracks, breaks, missing hardware.
(3) Replace gasket.
(4) Replace a front cover that is damaged beyond repair.
d. Installation.
(1) Install the crankshaft front cover by tightening the bolts in the sequence shown in figure 3-96.
(2) Tighten 3/8" x 24 bolts to 25-30 ft-lbs. and tighten 1/2" x 13 bolts to 80-90 ft-lbs.
3-28. Crankshaft
a. Removal.
(1) Drain engine crankcase TM 55-1905-217- 12 (para 3-2).
(2) Remove engine (para 2-8).
(3) Remove all accessories and assemblies with attaching parts as necessary to mount engine on overhaul stand.
(4) Remove oil pump (para 3-19).
(5) Remove pulley and vibration damper (para 3-22).
(6) Remove the transfer gear assembly and flywheel housing (para 3-23).
(7) Remove the transmission and flywheel (para 3-26).
(8) Remove connecting rod bearing caps (para 3-20).
(9) Remove main bearing caps and shells, and remove thrust washers from each side of rear main bearing (para
(10) Remove the crankshaft front cover (para 3-27).
(11) Remove the crankshaft, including the timing gear at the rear and the oil pump drive gear at the front.
b. Disassembly.
(1) Remove bolts (2, fig. 3-97) and lock- washers (3) and remove the crankshaft gear (4) from the crankshaft.
1. Plug
2. Bolt
3. Lockwasher
4. Gear, crankshaft
5. Gear, oil pump drive
6. Key
7. Dowel pin
8. Crankshaft
3-138


 


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