BEARING REPLACEMENT
CB9A-030 page 23/28
NOTICE: When replacing the bearings, the entire
bearing assembly, including the bearing cup and
the bearing cone, must be replaced.
1. Follow the steps in the "Compressor Disassembly"
section.
2. Remove the Oil Pump per the section titled "Oil
Pump Replacement."
3. Remove
the
flywheel.
4. Remove the bearing carrier and gasket from the
outboard end of the crankcase. The outboard
bearing cup will come off with the bearing carrier
and will need to be removed with a bearing removal
tool.
5. Remove the key from the crankshaft and slide the
crankshaft through the outboard end of the
crankcase. The bearing cones can then be
removed with a bearing puller.
6. Remove the bearing cover plate from the inboard
end of the crankcase. The inboard bearing cup is
pressed into the crankcase and can be removed
with the use of a bearing removal tool.
Figure 21 - Bearing Locations
7. To install the bearings:
a. Grease the outer edges of the bearing cups.
b. Referring to Figure 21 for the proper
orientation, carefully press the inboard bearing
cup into the crankcase until it is flush with the
outer surface of the crankcase.
c. Note the proper orientation and carefully press
the outboard bearing cup into the bearing
carrier assembly.
d. Press a bearing cone onto each end of the
crankshaft with the tapered end outward. The
bearing race should rest against the shoulder
on the crankshaft.
e. Lubricate the bearings with grease.
8. Install the crankshaft through the outboard end of
the crankcase.
9. With the oil pump assembly removed, install the
bearing carrier and new gasket. The bolt hole
positions ensure proper orientation. Tighten the
bolts evenly per Table 7 - Bolt Torque."
10. If the bearings have not been replaced, reinstall the
inboard bearing cover plate using the existing shim
set. If the bearings have been replaced, use a
thicker
set of shims.
11. Rotate the crankshaft by hand to verify free
movement of the shaft.
a. If the crankshaft has an excessive amount of
end play, too many shims have been used.
Lateral crankshaft movement (end play)
between the bearings should be 0.0015 to
0.0030" (0.038 to 0.076 mm) . If necessary,
remove shims until the end play is within
tolerance.
b. If the crankshaft binds, or will not turn, not
enough shims have been used pushing the
bearing cup too tight against the bearing cone.
Remove the crankshaft from the crankcase and
drive the inboard bearing cup out toward the
inboard side of the crankcase. Reinstall the
crankshaft and the bearing cover plate using
additional shims as required.
12. Install the oil pump per the "Oil Pump Replacement"
section of this manual.
13. Reassemble the compressor according to the
"Compressor Assembly" section.
Summary of Contents for HD942A
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