Minor Repair To The Compressor; Clutch Plate And Hub Assembly Replacement - GMC 1989 Light Duty Truck Repair Manual

1B2-2 V5 AIR CONDITIONING COMPRESSOR
1. C lu tc h C o il T erm in als
2. H ig h P ressure R e lie f Valve
3. H ig h S ide Low P ressure S w itc h
4. H ig h S ide C u t-O ff S w itc h
5. C o m p re s s o r C o n tro l Valve
Figure 1— Rear Head Details

MINOR REPAIR TO THE COMPRESSOR

CLUTCH PLATE AND HUB
ASSEMBLY REPLACEMENT
Clean
The compressor assem bly with solvent and blow dry
with dry air.
Remove or Disconnect (Figures 3, 4, and 5)
Tools Required:
J 33013-B Hub and Drive Plate Remover and
Installer
J 33022 6-Point 13 mm Socket
J 33027 Clutch Hub Holding Tool
J 34992 Com pressor Holding Fixture
• Clamp J 34992 in a vise and attach the compressor to
the holding fixture with thum b screws.
1. Shaft nut (21) using J 33022 (figure 4).
• Hold the clutch plate and hub assembly (22)
using J 33027.
2. Clutch plate and hub assembly (22).
• Thread J 33013-B into the clutch plate and hub
assembly (22).
• Hold the body of J 33013-B with a wrench and
tighten the center screw into the remover body
(figure 5).
3. Shaft key (23).
• Retain shaft key (21) if useable.
proper service. The com pressor connections and the out­
side of the compressor should be cleaned before any " on
vehicle" repairs, or before removal of the compressor.The
parts must be kept clean at all tim es and any parts to be
reassembled should be cleaned with Trichloroethane, nap-
tha, Stoddard solvant, kerosene or equivalent solvent and
dried with dry air. Use only lint free cloths to wipe parts.
Drain the com pressor and measure the amount of oil.
Replace with new 525 viscosity refrigerant oil. Refer to
" Specifications."
F-04535
NO TIC E: R em ove the o il drain p lu g to m ake sure
the co m p resso r is d rain ed c o m p le te ly o f o il (fig ­
ure 2).
I?
-►4- Install or Connect (Figure 3)
Tools Required:
1. Shaft key (23).
• Allow the shaft key (23) to extend 3.2 mm (1 /a-
• The shaft key (23) is curved slightly to give an
• Do not drive or pound on the clutch hub or the
Clutch plate and hub assem bly (22) (figure 7).
• Make sure the contact surfaces of the clutch
• Remove the forcing screw tip from J 33013-B
• Install J 33013-B with bearing (B) (figure 7).
Inspect
All parts and replace as necessary.
J 33013-B Hub and Drive Plate Remover and
Installer
J 33022 6-Point 13 mm Socket
J 33027 Clutch Hub Holding Tool
J 34992 Com pressor Holding Fixture
inch) out of the bottom of the hub keyway (figure
6
).
interference fit in the groove.
Important
shaft. Internal dam age to the com pressor may
result.
plate (22) and the pulley (26) are clean.
and reverse the body direction on the center
screw.