Table of Contents
Advertisement
1 8-70
1977 PONTIAC SERVICE MANUAL
13. Attach a Adapter J 5420 to the suction or LOW
pressure port of the Test Plate J 9625 to open the schrader-
type valve.
NOTE: Oil will drain out of the compessor suction port
adapter if the compressor is positioned with the suction
port down.
14. Attach the compressor to the Holding Fixture J
25008-1 (R-4 compressor), and J 9396 (A-6 compressor), and
clamp the fixture in a vise so that the compressor can be
manually turned with a wrench.
15. Using a wrench, rotate the compressor crankshaft or
drive plate hub 10-complete revolutions at a speed of
approximately one-revolution per second.
NOTE: Turning the compressor at less than one-
revolution per second can result in a lower pump-up
pressure and disqualify a good pumping compressor.
16. Observe the reading on HIGH pressure gage at the
completion of the tenth revolution of the compressor. The
pressure reading for a good pumping compressor should be
50 p.s.i. or above for the R-4 and 60 p.s.i. or above for the
A-6 compressor. A pressure reading of less than 45
p.s.i. for the R-4 or 50 p.s.i. for the A-6 would
indicate one or more suction and/or discharge
valves leaking, an internal leak, or an inoperative
valve and the compressor should be disassembled
and checked for cause of leak. Repair as needed,
reassemble and repeat the pump-up test. Externally leak test
with Electronic Leak Detector J 23400.
17. When the pressure pump-up test is completed,
release the air pressure from the HIGH side and remove the
Gage Adapters J 5420 and Test Plate J 9625.
18. On the R-4, tilt the compressor so that the
compressor suction and discharge ports are down. Drain the
oil from the compressor.
On the A-6, remove oil charge screw and drain the oil
sump.
19. Allow the compressor to drain for 10 minutes, then
charge with the proper amount of oil. The oil may be poured
into the suction port.
NOTE: If further assembly or processing is required, a
shipping plate or Test Plate J 9625 should be installed
to keep out air, dirt and moisture until the compressor
is installed.
1977 C60 TEMPERATURE CABLE
ADJUSTMENT
A &
G
Series Turnbuckle-Type
NOTE: Adjustment is to be made after cable has been
connected securely at both ends and all vacuum
connections completed.
B Series Self-Adjusting Cable
1. Disengage temp. cable retaining clip from bellcrank
post.
2. The temperature door's threaded operating rod should
be snapped into the bellcrank's white nylon retaining button
groove so that .4 inch of threaded rod end is exposed beyond
the outer edge (towards you as you snap it into place) of the
white button.
3. Re-engage temp. cable retaining cup to bellcrank's
vertical post.
4. Move temp. control lever full travel in both directions
(full HOT-full COLD) to automatically allow cable
adjustment--you should be hearing temp. door "thud" at its
open
&
closed position.
F Series Turnbuckle-Type
1. Place temperature lever 1/16 inch from "full" cold
position (full left).
2. Adjust turnbuckle until temperature door is seated.
3. Move temperature lever full right and back to full left.
Door should be heard hitting. Seat and lever should stop
slightly short of end of slot.
4. If door is not heard seating or if lever is more than
1/8 inch from end of slot, repeat Steps 2 and 3 until cable
is properly adjusted.
X Series Slotted-Clip Cables
1. Attach Cable to Control Asm.
2. Place Control temperature lever in "OFF" position.
3. Place opposite loop of cable on Heater Case temp.
door post.
4. Push sheath toward Heater lever until temp. valve
(door) seats and lash is out of cable and Control.
5. Tighten screw to secure cable.
Astre & Sunbird Slotted-Flag Type
1. Cable
&
Temp. lever to be in " O F F position.
2. Adjust via slotted cable flag.
3. Tighten screw.
1. Place temperature control at "full" heat.
2. Adjust turnbuckle until temperature door seals.
3. Move temp. lever to "full" cold and back to "full"
heat. Door seals at both ends of travel.
4. If door does not seal at both ends, repeat Steps 2 and
3 until cable is properly adjusted.
Advertisement
Table of Contents
