Engine Maintenance
124
9. To disassemble the clutch, press the pulley out
of the bearing.
10. Inspect the friction shoes and shoe support
bushings.
a. Replace the friction shoe assemblies if the
linings are worn to a thickness of less than
1/16 to 3/32 in. (1.6 to 2.4 mm).
b. If the shoe support bushings are worn
replace the friction shoe assemblies.
11. To replace the friction shoes:
a. Remove the shoulder bolts that mount the
friction shoes.
b. Use a soft hammer to tap the friction shoe
mounting bolts to remove them from the
friction shoes.
c. Attach the new friction shoe assemblies to
the rotor plate with the mounting bolt plate
and the shoulder bolts. Loosely tighten the
bolts to hold the shoes in place. Place a
large hose clamp around the shoes and
tighten clamp until the shoes are
compressed to the smallest diameter.
Torque the bolts to 30 to 35 ft-lb (41 to 47
N•m). Remove the hose clamp.
12. To replace the bearing:
a. Remove the retaining ring and press the
bearing out of the hub.
b. Press the new bearing into the hub and
install the retaining ring.
13. To assemble the clutch, press the pulley into
the bearing.
14. Place the clutch on the compressor crankshaft,
align the keyways (use Keyway Tool
204-972), and insert the key to be flush with
the end of the crankshaft.
15. Install the special washer and the clutch
mounting bolt. Torque the clutch mounting
bolt to 90 ft-lb (122 N•m). Use the Clutch
Restraint Tool or an impact wrench.
16. Reinstall the compressor drive belt on the
clutch pulley.
17. Slide the compressor back into position and
install the mounting hardware.
18. Place the belt on the electric motor and idler
pulleys. Make sure the belt fits on the pulleys
correctly.
19. Turn the idler adjuster as needed to adjust the
belt to the correct belt tension setting.
20. Tighten the idler mounting bolt.
21. Check the belt tension setting and readjust if
necessary.
Drive Bushing Replacement
Bonded drive bushings are used in this unit.
The design of the bonded drive bushings requires
that the following procedure be used to replace the
drive bushings.
1. Loosen the compressor drive belt idler
mounting bolt.
2. Turn the compressor drive belt idler adjuster
as needed to loosen the belt enough to allow
you to remove the belt from the electric motor
pulley.
3. Support the compressor and unbolt the
compressor mounting flange from the engine
(leave the refrigeration lines connected).
4. Slide the compressor assembly away from the
engine and turn the compressor to provide
better access to the clutch.
CAUTION: Do not place the key on the
compressor crankshaft before installing
the clutch because the key might be
pushed out of place behind the clutch
when the clutch is installed.
1.
Elastomer
2.
Inner Bearing Sleeve
Figure 205: Bonded Drive Bushing
1
2
