TM 9-2320-272-24-4
5-8. CRANKSHAFT AND MAIN BEARINGS MAINTENANCE (Contd)
d. End Play Clearance
1.
Attach dial indicator to rear of engine block (6) with contact point (4) resting on crankshaft end
face (3).
2.
Push crankshaft end face (3) toward front of engine block (6) and set dial indicator to zero.
3.
Push crankshaft end face (3) back toward rear of engine block (6) and check dial indicator,
NOTE
Complete steps 4 through 6 only if end clearance of crankshaft is
less than 0.007 in. (0.18 mm).
4.
Loosen main bearing screws (1) one turn and push crankshaft (2) first toward front, then toward
rear of engine block (6).
5.
Tighten main bearings screws (1) as in task c, steps 18 through 21.
6.
Repeat steps 1 through 3.
NOTE
If end clearance is more than 0.22 in. (0.56 mm), crankshaft must
be replaced or oversize thrust rings installed. Ensure markings on
rear crankshaft counterbalance are correct. (Refer to task a, steps
11 and 12).
7.
Bend up tabs on fourteen lockplates (7) to hold screws (1).
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