GMC S Series 1994, Руководство по ремонту

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m easured and recorded. This PAG lubricant should then be
discarded and an equal am ount o f new PAG lubricant added to
the com pressor.
The service com pressor is shipped with 240 ml (8 oz.) o f
PAG lubricant. This lubricant should be drained and retained
for use as replacem ent lubricant when service procedures
require addition o f new lubricant to com pressor. NOTE:
R eplace only with GM approved PAG oil P/N 12345923.
M ost m inor repair procedures may be done on the
vehicle w ithout discharging the system . M ajor repair
procedures require that the system be discharged o f refrigerant.
METRIC THREAD SIZE INFORMATION
1. Com pressor to m ounting bracket bolts.
Front M 10 x l .5 - 6H
Rear M8 x 1.25 - 6H
2. Suction-discharge port screw.
M l O x 1 .5 - 6 H
3. C om pressor shaft.
M9 x l .25 - 6H
4. Internal hub-clutch drive assem bly.
M22 x 1 .5 - 6 H
UNIT REPAIR
MINOR COMPRESSOR REPAIR
PROCEDURES
THE FOLLOWING OPERATIONS TO THE
COM PRESSOR CLUTCH PLATE AND HUB, ROTOR
AND BEARING, AND COIL ARE COVERED AS
“M IN O R ” BECAUSE THEY MAY BE PERFORMED
W ITHO UT FIRST RECOVERING REFRIGERANT
FROM THE SYSTEM OR REMOVING THE
COM PRESSOR FROM THE VEHICLE.
T he C om pressor Shaft Seal assem bly, control sw itches,
and Pressure R elief Valve may also be serviced W ITH O U T
R E M O V IN G TH E com pressor from the vehicle but these
o p erations are covered later in this section as M AJOR REPAIR
P R O C E D U R E S because the system must be reclaim ed,
evacuated and recharged to com plete service.
Illustrations used in describing these operations show the
co m p resso r rem oved from the vehicle only to m ore clearly
illustrate the various operations.
W hen servicing the com pressor, rem ove only the parts
that prelim inary diagnosis show s are in need of service. Refer
to F igures 2 and 5 for inform ation relative to part nam es and
location.
R em oval and installation of external com pressor parts,
and disassem bly and assem bly o f internal parts, must be
perform ed on a clean w orkbench. The work area, tools and
parts m ust be kept clean at all tim es.
COMPRESSOR CLUTCH PLATE AND HUB
ASSEMBLY
Remove or Disconnect
C lam p the holding fixture J 33026 in a vise and attach
com pressor to holding fixture with thum b screws
J 3 3 0 2 6 - 1 (Fig. 3).
With center screw forcing lip in place to thrust against
the end of the shaft, thread the Clutch Plate and Hub
A ssem bly Installer-R em over J 3 3 013-B into the hub.
Hold the body o f the rem over with a w rench and turn the
center screw into the rem over body to rem ove the clutch
plate and hub assem bly (Fig. 3).
NOTICE:
Do not drive or pound on the clutch hub or
shaft. Internal dam age to com pressor m ay result. The
forcing tip on J 330 1 3 -B rem over-installer center screw
must be flat or the end o f the shaft/axial plate assem bly
will be damaged.
Remove the shaft key and retain for reassem bly.
♦ + Install or Connect
Install the shaft key into the hub key groove (Fig. 4).
Allow the key to project approxim ately 3.2m m (1 /8 ")
out of the keyway. The shaft key is curved slightly to
provide an interference fit in the hub key groove.
Be sure the frictional surface o f the clutch plate and the
clutch rotor are clean before installing the clutch plate
and
hub assembly.
Align the shaft key with the shaft keyw ay and place the
clutch plate and the hub assem bly onto the com pressor
shaft.
rn
J 33013-B HUB AND
[T]
J 33026 HOLDING
CLUTCH DRIVE PLATE FIXTURE
ASM. REMOVER j j j CUJTCH p^ TE
[ T | J 33026-1 THUMB AND HUB ASM.
SCREW
G60070 • 1D2-C-R1
Fig. 3 Clutch Plate and Hub Assembly Removal