GMC 1976 ZEO 6083 Maintenance Manual page 90

The following operations to the Compressor Clutch
Plate and Hub, Pulley and Bearing, and Coil Housing are
covered as "Minor" because they may be performed WITH
OUT FIRST PURGING THE SYSTEM OR REMOVING THE
COMPRESSOR from the vehicle.
The Compressor Shaft Seal assembly may also be ser-
viced WITHOUT REMOVING THE COMPRESSOR from the
vehicle but this operation is covered later in this section as
Figure 4 0-Compressor Cross Sectional View
AIR CONDITIONING SYSTEM
1- 73
"Major Repair Procedures" because the system MUST
FIRST BE PURGED of Refrigerant .
Illustrations used in describing these operations
show the compressor removed from the vehicle only
to more clearly illustrate the various operations .
When servicing the compressor, remove only the
necessary components that preliminary diagnosis in-
A-3941
1 Rear Head
20 Oil Pump Gears
2 Rear Head to Shell O-ring 21 Mainshaft Bearing (Rear)
3 Rear Discharge Valve Plate
22 Oil Inlet Tube O-ring
4 Rear Suction Reed Plate
23 Oil Inlet Tube
5 Piston Ring (Teflon) 24 Axial Plate and Mainshaft Assembly
6 Piston Drive Ball 25 Thrust Race
7 Shoe Disc 26 Thrust Bearing
8 Piston 27 Thrust Race
9 Front Suction Reed Plate
28 Compressor Shell
10 Front Discharge Valve Plate 29 Cylinder Assembly
11 Front Head to Shell O-ring 30 Shaft Seal
12 Front Head 31 Shaft Seat Seat O-ring
13 Coil and Housing Assembly 32 Shaft Seal Seat
14 Coil Housing Retainer Ring
33 Shaft Seal Seat Retainer Ring
15 Pulley and Bearing Assembly 34 Felt Sleeve
16 Pulley Bearing
35 Felt Sleeve Retainer
17 Pulley Bearing Retainer Ring 36 Spacer
18 Pulley and Bearing Retainer Ring
37 Clutch Hub Retainer Ring
19 Clutch Hub and Drive Plate Assembly 38 Shaft Nut