GMC S Series 1994, Repair Manual

Page: 35 / 919

1 -J 25287 CLUTCH COIL PULLER
2—J 25031 GUfOE
3—J 25008-A HOLDING FIXTURE
4-C LU TC H COIL
520023-1D1-R1
Fig. 25 Removing Poly-Groove Clutch Coil
(Optional Method)
Poly-Groove Drive
|+ » | Install or Connect
1. Place the clutch coil assem bly on the neck o f the front
head with clutch coil term inals in line w ith m ark
described in Step 2 o f the rem oval procedure.
2. Place the pulley rotor and bearing assem bly on the neck
of the front head and seat the clutch coil and pulley rotor
in place using R otor and B earing Installer J 26271- A
(Fig. 13).
Before fully seating the assem bly on the front head, be
sure the clutch coil term inals are in proper location in
relation to the com pressor and that the three protrusions
on the rear o f the clutch coil housing align with the
locater holes in the front head.
3. Install the pulley-rotor and bearing assem bly retaining
ring and reassem ble the clutch plate and hub assem bly as
described in “Clutch Plate and H ub A ssem bly-R eplace” .
4. Check to see that the clutch plate to clutch rotor air gap is
0.5-7.6m m (.0 2 0 -.0 3 0 ").
MAJOR REPAIR PROCEDURES
Service repair procedures to the C om p ressor Shaft
Seal and Pressure R elief Valve and C om p ressor Sw itches
are considered “ M A JO R ” SIN C E TH E
REFRIGERATION M U ST BE R E C O V E R E D ,
EVACUATED AND R E C H A R G E D to com p lete service.
W hen replacing the shaft seal assem bly or pressure relief
valve (Fig. 2), even if the com pressor rem ains on the vehicle
during the operation, it will be necessary to recover refrigerant.
Other than clutch repair procedures, the sam e holds true for any
disassembly of the com pressor.
A clean w orkbench, preferably covered with a sheet o f
clean paper, orderliness in the work area and a place for all parts
being removed and replaced is o f great im portance, as is the use
of the proper, clean service tools.
NOTICE:
A ny attem pt to use m ake-shift or
inadequate equipm ent m ay result in dam age and/or
im proper com pressor operation.
All parts required for servicing the internal com pressor
are protected by a preservation process and packaged in a
manner which will elim inate the necessity o f cleaning,
washing or flushing o f the parts. The parts can be used in the
internal assem bly ju st as they are rem oved from the service
package. Seals and protective p a ckaging should be left intact
until ju st p rio r to installation.