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7A4-26
1977 PONTIAC SERVICE MANUAL
2. Remove control valve body assembly and governor
pipes (Fig. 7A4-2 1).
Fig. 7A4-2 1 Removing Control Valve ~ s s e ~ m b l ~
3. Remove the governor screen assembly from the
governor feed pipe hole in the case or from the end of the
governor feed pipe (Fig. 7A4-22).
Fig. 7A6-22 Removing Governor Screen Assembly
4. Disconnect solenoid wire and lead wire from electrical
connector.
5. Remove governor pipes from control valve assembly.
6. Remove valve body-to-spacer gasket.
REAR SERVO, VALVE BODY
SPACER, GASKET AND FRONT
SERVO
1. Remove rear servo cover attaching screws, servo cover
and gasket. Discard gasket.
2. Remove rear servo from case (Fig. 7A4-23).
3. Remove rear servo accumulator spring.
Fig. 7A4-23 Removing Rear Servo
4. Make band apply pin selection check to determine
possible cause of malfunction (Fig. 7A4-24):
Fig. 7A4-24 Checking for Correct Rear Band Pin
a. Attach Pin J 21370-5 and Fixture J 21370-6 to
transmission case with attaching screws.
b. Apply 25 ft. lb. torque and select proper pin to be used
during assembly of transmission.
c. There are three selective pins, identified as follows: (1)
If both steps of Pin J 2 1370-5 are below the gage surface, the
long pin, identified by 3 rings, should be used. (2) If the gage
surface is between the steps, the medium pin, identified by
2 rings, should be used. (3) If both steps are above the gage
surface, the short pin, identified by 1 ring, should be used.
NOTE: Identification rings are located on band lug end
of the pin. Selecting the proper pin is equivalent of
adjusting the band.
CAUTION: If transmission is in vehicle, be
careful when detent solenoid is removed as it
prevents the spacer plate, gasket and check b d s
from dropping down.
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