GMC 1976 ZEO 6083 Maintenance Manual page 57

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AIR CONDITIONING SYSTEM
Figure 11-Compressor
.0005 inch thickness variations including a basic
ZERO disc for simple field gauging operations . Discs
are marked with their size which corresponds to the
last three digits of the piece part number .
Selection from this group must be made to pro-
vide .0005 inch to .0010 inch total clearance between
the shoe discs and the axial plate at the tightest place
throughout its 360° rotation (figure 12).
Thrust Bearings
The thrust bearings, sandwiched between two
thrust races (see below) are located between the
shoulders of the axial plate and the shoulders of both
the front and rear cylinder hubs .
Exploded View
Thrust Races
The steel thrust races are ground to fixed thick-
nesses . A total of 14 races in increments of .0005 inch
thickness are available for field service. As in the case
of the ball seats the thrust races will be identified on
the part by their thickness, the number on the race
corresponding to the last three digits of the piece part
slumber. The FRONT combination of a race, bearing
and race is selected to provide the proper head clear-
ance between the top of the cylinder and the under-
side of the suction and discharge valve plates. The
REAR end combination of bearing and races is se-
lected to obtain .0005 inch low limit to .0015 inch
high limit running clearance between the hub sur-
faces of the axial plate and the front and rear hubs
1 O-Ring
21 Front Discharge Valve Plate 39 Rear Suction Reed
2 Front Head
Assembly 40 Rear Discharge Valve Plate
3 O-Ring 22 Front Suction Reed
Assembly
4 Shaft Seal Assembly 23 Bushing 41 Inner Oil Pump Gear
5 Seal Seat 24 Needle Bearing 42 Outer Oil Pump Gear
6 Seal Seat Retainer Ring 25 O-Ring 43 O-Ring
7 Absorbent Sleeve
26 Front Cylinder Half 44 Rear Head
8 Seal Retainer 27 Thrust Races 45 Lock Nut
9 Clutch Coil Retainer Ring 28 Thrust Bearing 46 O-Rings
10 Oil Drain Plug 29 Discharge Crossover Tube 47 Pressure Relief Valve
11 Compressor Shell 30 Teflon Piston Ring 48 O-Ring
12 Clutch Coil and Housing Assy . 31 Teflon Ring Type Piston 49 Suction Screen
13 Pulley 32 Shoe Disc
50 Oil Pick-Up Tube
14 Bearing 33 Ball 51 O-Ring
15 Bearing Retainer 34 Teflon Piston Ring 52 Axial Plate
16 Pulley Retainer Ring 35 Rear Cylinder Half
53 Shaft
17 Clutch Plate and Hub Assy . 36 O-Ring 54 Suction Crossover Cover
18 Spacer 37 Needle Bearing 55 Key
19 Retainer Ring 38 Bushing
56 Dowel Pins
20 Lock Nut
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