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Disassembly and Reassembly
59
5. Apply refrigerant oil to the oil pump housing
gasket and place it on the compressor body.
Align the oil holes in oil pump housing gasket
with oil holes in compressor body.
6. Place the oil pump housing in position and tap
it lightly with a soft face hammer till it
contacts the compressor body. Use a soft face
hammer to avoid damaging the O-ring sealing
surfaces.
7. Place two 3/8-16 X 1-1/4 in. bolts and two 3/8
in. washers in mounting holes on opposite
sides of the oil pump housing. Snug the bolts
down and turn the crankshaft to make sure it
rotates freely. After checking that the
crankshaft rotates freely, remove these bolts to
install the oil pump.
C3 Bearing Only—Using Loctite RD/620 to
Fasten Seal End Main Bearing In
Compressor Body
1. Remove the crankshaft from the compressor
body.
2. Clean the outer race of the seal end main
bearing and the bore in the compressor body
with a nonchlorinated solvent to remove all
oils.
3. Apply a thin coating of Loctite RC/620 to
both the outer race of the bearing and the bore
in the compressor body.
4. Seat the crankshaft assembly fully into the
bore on the seal end of compressor body. Be
sure the crankshaft assembly in seated as far
as possible into the compressor body.
5. Place the oil pump housing in position and tap
it lightly till it contacts the compressor body.
6. Place two 3/8-16 X 1-1/4 in. bolts and two 3/8
in. washers in mounting holes on opposite
sides of the oil pump housing and snug the
bolts down.
7. Allow 15 minutes for the Loctite to fix the
parts. Full cure of the Loctite requires 12
hours at room temperature or 30 minutes at
250 F (121 C).
Compressor Crankshaft
Precautions
1. Alignment of the compressor to the engine
flywheel is controlled by the position of the
engine flywheel housing. Two checks should
be made to assure that alignment is correct.
Refer to the appropriate Engine Overhaul
Manual to correct an alignment problem.
a. Use a dial indicator to check the radial run
out, which is the concentricity of the
flywheel to the flywheel housing.
Maximum total indicated radial run out is
0.004 in. (0.10 mm).
Figure 97: Checking Radial Run Out
b. The flywheel housing should fit tightly
against the engine block. Nicks, burrs and
debris between the block and flywheel
housing can cause misalignment and result
in a loosely mounted flywheel housing.
Use a dial indicator to check the axial run
out, which is measured from the flywheel
to end surface of the flywheel housing.
Maximum total indicated axial run out is
0.010 in. (0.25 mm). See “Figure 98:
Checking Axial Run Out” on page 60.
CAUTION: Do not use an excessive
amount of Loctite. Use care in application
and assembly to prevent contamination of
the bearing or internal area of the
compressor or refrigeration system with
Loctite.