TM 9-2815-225-34&P
3-68. ENGINE CRANKSHAFT AND MAIN BEARINGS INSTALLATION (Contd)
LOCATION/ITEM
ACTION
REMARKS
Installation (Contd)
12.
Crankshaft (4)
a. Use hands to rotate. If
crankshaft (4) does not rotate
freely, refer to para. 3-37, Engine
Crankshaft Repair.
b. Install a dial indicator on rear
of cylinder block (1) with contact
tip resting on crankshaft flange
end face.
c. Pry crankshaft (4) toward
Use a suitable prybar.
front of cylinder block (1).
d. Remove prybar and set dial
indicator to zero.
e. Pry crankshaft (4) toward
The total end clearance for a
rear of the cylinder block (1).
new crankshaft (4) and new thrust
bearing washers should be 0.007-
0.018 in. (0.178-0.457 mm).
Maximum clearance for worn
parts is 0.022 in. (0.559 mm).
f. If clearance is less than 0.007 in.,
(0.178 mm) proceed as follows:
(1) Loosen fourteen screws
(10) one turn.
(2) Pry crankshaft (4) toward
front and rear of cylinder block
(1).
(3) Tighten fourteen screws
(10) according to steps 11
a, b, and c.
(4) Recheck end clearance.
g. If clearance is more than
0.022 in. (0.559 mm), use oversize
thrust bearing washers.
13.
Fourteen lockplates (9)
Bend tangs against heads of
fourteen screws (10).
FOLLOW-ON TASK: Install piston, connecting rod, and bearings (para. 3-69).
3-550
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