TM 5-3895-370-14&P
5-65. CRANKSHAFT REPLACEMENT/REPAIR (CONT).
(10)
Determine main bearing clearance as follows:
(a)
Install 10 bearings (1) in five bearing caps
(2) and in cylinder block.
(b)
Install five bearing caps (2) and 10 screws
(3). Tighten screws 130 lb-ft (176 Nm).
(c)
Measure and record main bore diameters
at position C. Maximum diameter is
3.2720
in.
(83.1088
mm).
If
measurement
exceeds
limit,
replace
bearings. If measurement is still above
limit, replace top bearing caps.
(d)
Subtract position A (recorded in step [8]) from position C (C A). Maximum clearance is 0.00475 in.
(0.12065 mm). If measurement exceeds limit, replace crankshaft.
(e)
Remove 10 screws (3), five bearing caps (2), and 10 bearings (1).
c. Installation.
(1)
If removed, install five piston cooling nozzles
(16) in cylinder block (10).
CAUTION
Do
not
apply
grease
on
outer
diameter
of
bearing
halves
or
damage may result to bearing halves,
related bearing caps, and crankshaft.
(2)
Lubricate four bottom rod bearing halves (15),
thrust bearing half (14), and four bottom bearing
halves (13) on convex side only with general
purpose grease.
CAUTION
If top and bottom bearing halves are
exchanged, damage could result to
crankshaft journals.
(3)
Install four bottom rod bearing halves (15) on connecting rods (8).
(4)
Install thrust bearing half (14) and four bottom bearing halves (13) on cylinder block (10).
(5)
Install key (12) in crankshaft (1).
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