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1 8-2
1977 PONTIAC SERVICE MANUAL
.....................................
R-4 Compressor Pressure Relief Valve
.................
1 B-64
(External and Internal)
1 B-69
1977 C60 Temperature Cable Adjustment
........
1 B-70
R-4 Compressor Front Head and/or 0-Ring 1B-64
A
&
G Series Turnbuckle-Type
.....................
1B-70
R-4 Compressor Thrust and
B Series Self-Adjusting Cable
.........................
1 B-70
..............................
Belleville Washers
.........................................
1 B-65
F Series Turnbuckle-Type
1 B-70
...........................
R-4 Compressor Main Bearing
......................
1 B-65
X Series Slotted-Clip Cables
1 B-70
...............
R-4 Compressor Shell and/or 0-Ring Seals. 1B-66
Astre
&
Sunbird Slotted-Flag Type
1 B-70
R-4 Compressor Discharge Valve Plate
Illustrated Component Service
................................
and/or Retainer
...........................................
1 B-67
Procedures for each Series
1
B-71
............................................
R-4 Compressor Cylinder and Shaft Assy
.....
1 B-68
Special A/C Tools
1 B- 1
1
5
A-6 and R-4 Compressor Leak Testing
GENERAL DESCRIPTION
.
COOLING IS OFFERED W l T H THE CONDITIONED '
\ \
AIR DISTRIBUTED T H R U I.P. OUTLETS A T
"HI" BLOWER SPEED.
\
LIMITED AIR FLOW DISTRIBUTED
T H R U I.?. OR WJSHLD. OUTLETS
WHENEVER IGNITION IS I N A
"RUN" OR "ON" POSITION.
I
I
VACUUM OPERATED SYSTEM
TEMPERATURE LEVER POSITION REGULATES TEMPERATURE
SELECTOR (MODE) LEVER
OF THE A I R ENTERING THE PASSENGER COMPARTMENT B Y
CABLE OPERATION OF THE HEATER CORE TEMPERATURE DOOR
THIS A&G SERIES A/C CONTROL REPRESENTS THE TYPICAL 1977 A/C CONTROL FACE. A L L 1977 CUSTOM
A/C CONTROLS H A V E IDENTICAL MODE LEVER POSITIONS, A 4-SPEED BLOWER
LO-TO-HI FAN 81
COLD-TO-HOT TEMPERATURE LEVER CONTROL. F SERIES CONTROLS H A V E THE BLOWER F A N SWITCH
MOUNTED A T THE R.H. SIDE OF THE CONTROL. THE X SERIES CONTROL IS ARRANGED W l T H VERTICAL
LEVER TRAVELS. THE B SERIES CUSTOM A/C CONTROL TEMP. LEVER A T "FULL COLD" T R A V E L W I L L
OPERATE THE WATER V A L V E TO SHUT OFF WATER FLOW TO THE HEATER CORE.
2304
FIG. 1B-1 1 9 7 7 CUSTOM A/C CONTROL
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