Figure 206. Crane engine crankshaft assembly,
removal and installation.
b.
Inspection and Repair.
(1) Inspect the crankshaft for scored or
damaged bearing journals, cracks,
breaks, or other damage. Replace a
defective crankshaft as necessary.
(2) Inspect the connecting rod bearings and
crankshaft main bearings for scores,
cracks, breaks, or excessive wear.
(3) Inspect the bearing caps for breaks,
cracks, or other damage.
(4) Inspect the main bearing journals, the
diameter should measure between
2.9985 and 2.9995 inches.
(5) Inspect the crankshaft end play, it
Figure 207. Crane engine crankshaft assembly,
should measure between 0.005 and
exploded view.
0.008 inch.
(6) Inspect the crank-pin. The diameter
should measure between 2.560 and
b.
Installation.
2.561 inches.
The length should
(1) Install the crankshaft assembly as
measure between 1.6855 and 1.6875
illustrated on figure 206.
inches.
(2) Install the timing gears (para. 369).
377.
Crane
Engine
Crankshaft
Assembly
(3) Install the connecting rod caps (para.
Reassembly and Installation
(4) Install the oil pump (para. 353).
a.
Reassembly. Reassemble the crane engine
(5) Install the oil pan and filler block (para.
crankshaft assembly as illustrated on figure 207.
(6) Install the flywheel and housing (para.
(7) Install the front mount and pulley (para.
AGO 6819A
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