Yard Machines Y60 Operations Instructions Page 202

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Figure 5-62. Flywheel Housing Installation
Figure 5-61. Checking Rod Alignment
5-44. CONNECTING ROD BEARING
REPLACEMENT.
a. Connecting rod bearings must be inspected
according to figure 5-50, and bearings evidencing
any abnormal condition must be replaced.
b. The connecting rod bushing (wrist pin
bushing) should be checked for wear internally and
also for good fit in the rod eye.
c. If the bushing requires replacement, it should
be pressed out of the rod as shown in figure 5-60,
and the new bushing installed in a similar manner.
d. Ream the new bushing to size (see Table 5)
after installation.
e. Connect rod alignment should be checked in a
fixture such as that shown in figure 5-61. Do not
attempt to straighten a bent rod, it must be
replaced.
5-38
5-45. CR.ANKSHAFT INSTALLATION.
a. Prior to crankshaft installation, install all valve
lifters in the bores from which they were originally
removed. Lifters should be dipped in clean engine
oil before installing.
b. Install crankshaft and gear assembly, using
new bearings.
c. If new crankshaft gear is to be installed, heat
the gear to a maximum of 400°F, and using tongs
and asbestos gloves, install gear on crankshaft,
making sure that keyway is properly positioned.
d. Torque all bearing caps to specifications and
check bearing clearances.
e. Check to see that crankshaft rotates freely.
f. Install the rear main seal. Lightly coat the steel
edge of the seal (flywheel side) with non-hardening
Permatex.
g. The small side of the steel lip must be installed
toward the engine side and the oil seal must be
installed l/32 inch below machined surface on
engine side of flywheel housing.
h. Install flywheel housing. Install new O-ring
seal on flywheel housing, with vulcanized joint
toward top of engine.
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