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 TM 55-1905-219-14-4
3-42.
CRANKSHAFT - MAINTENANCE INSTRUCTIONS.
a. The crankshaft is a one-piece steel forging, heat-treaed to ensure strength and durability. The main
t
and connecting rod bearing journal surfaces and fillets on all crankshafts are induction hardened.
b. Complete static and dynamic balance of the crankshaft has been achieved by counterweights
incorporated into the crankshaft.
c. The crankshaft end play is controlled by thrust washers located at the rear main bearing cap of the
engine. Full pressure lubrication to all connecting rod and main bearings is provided by drilled passages
within the crankshaft and cylinder block.
d. Two dowels and six tapped holes are provided in the rear end of the crankshaft for locating and attaching
the flywheel. One hole is unequally spaced so that the flywheel can be attached in only one position.
This task covers:
a.
Inspection
INITIAL SETUP
Test Equipment
References
NONE
NONE
Equipment
Special Tools
Condition
Condition Description
NONE
Oil Pan Removed
Lube Oil Pump Removed
Oil Inlet Pipe Removed
Crankshaft Bearings Removed
Material/Parts
Special Environmental Conditions
NONE
NONE
Personnel Required
General Safety Instructions
1
NONE
3-906
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