Chevrolet 1977 10 Series, Repair Manual, Page: 371 / 468

AUTOMATIC TRANSMISSIONS (400)7A-51
FR O N T END WASHER THICKNESS
Thickness Color
.060 - .064
Y ellow
.071 - .075
Blue
.082 - .086
Red
.093 - .097 Brown
.1 0 4 - .108 Green
.115 - .119
Black
.1 2 6 - .130 Purple
Fig. 7 A-1 7 0 C ~ F ro n t End W a s h e r S e le c tio n C h a rt
b. M ount a dial indicator on rod and index indicator to
register with end of turbine shaft.
c. Push turbine shaft rearward.
d. Push output shaft forward.
e. Set dial indicator to zero.
f. Pull turbine shaft forward.
Read resulting travel or end play which should be
.003"-.024". Selective washer controlling this end play is
located between pump cover and forward clutch housing. If
more or less washer thickness is required to bring end play
within specifications, select proper washer from the chart in
Fig. 7A-170C.
NOTE:
An oil soaked washer may tend to discolor. It
will be necessary to measure washer for its actual
thickness.
24. Install remaining front pum p attaching bolt and seal.
Torque 18 ft. lbs.
Fig. 7 A-1 7 1C—Installing Extension Oil Seal (Typical)
Fig. 7 A-1 7 2 C --L o c a tio n o f C heck Balls
CASE EXTENSION ASSEMBLY
1. Install new case extension housing to case gasket on
extension housing. Model CL uses a seal between the
extension housing and case extension.
2. A ttach extension housing to case using attaching bolts
a n d /o r studs. Torque bolts to 20-25 ft. lbs.
NOTE:
Models CA, CG and CR use two (2) studs at
5 o’clock and 7 o’clock positions (when viewed from the
rear of case and transm ission in vehicle). These studs are
for the installation of the catalytic converter. Torque the
studs to 20-25 ft. lbs.
3. If necessary, install a new seal as follows:
a. (All except CL Models) use a non-hardening sealer
on outside of seal body; and using Tool J-21359, drive seal
in place (Fig. 7A-171C).
b. (Model CL) use a non-hardening sealer on outside of
seal body; and using Tool J-24057 drive seal in place (Fig.
7A-171C).
Installation of Check Balls, Control Valve Spacer
Plate and Gasket,
Detent Solenoid, Front Servo Assembly, and
Electrical Connector
1. Install two control valve assembly attaching bolts with
heads cut off as guide pins as shown in figure 7A-183C.
2. Install six (6) check balls into ball seat pockets in
transmission case. Figure 7A-172C.
NOTE:
If transm ission is in the vehicle, install check
balls into ball seat pockets on spacer plate (Fig. 7A-
173C).
3. Install control valve spacer plate-to-case gasket
(gasket with extension for detent solenoid and a "C" near
front servo location) (Fig. 7A-174C).
4. Install control valve spacer plate and control valve to
spacer plate gasket (gasket identified with a a " VB" near front
servo).
5. Install detent solenoid gasket.