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78-24
1977 PONTIAC SERVICE MANUAL
Fig.
76-20
Transmission Case Cover Assembly
5. Inspect and replace damaged parts.
6. With detent spring tang projecting up over 3rd-4th
shifter shaft cover opening, install 1st-2nd detent cam onto
cam pivot pin. With detent spring tang projecting up over
1st-2nd shifter shaft cover hole, install 3rd-4th detent cam.
NOTE: 1st-2nd detent cam has .090" greater contour
on inside detent notch.
7. Install detent cam retaining "C" ring to pivot pin and
hook detent spring into detent cam notches.
8. Install 1st-2nd and 3rd-4th shifter shafts into case
cover, being careful not to damage seals. Install both shift
forks to shifter shafts, lifting up on detent cams to allow forks
to fully seat.
9. Install reverse detent ball and spring to case cover,
then install reverse shifter shaft assembly to case cover.
10. Install outer shifter levers, flat washers, lock washers
and bolts to case cover. Position shifter levers into neutral
detent (center) position and position cover gasket on case.
11. Carefully position case cover assembly into place,
making sure that shift forks are aligned to respective sliding
sleeves.
12. Install case cover attaching bolts and tighten evenly
to 22 lb. ft. torque. Connect control rods to shifter levers at
case cover.
13. Remove filler plug and add lubricant as necessary
to level of filler plug hole. Lower and remove vehicle from
hoist. Check transmission operation and adjust linkage as
required.
SPEEDOMETER DRIVEN G E A R - R & R
Refer to procedure under 3-SPEED LT. DUTY
MUNCIE TRANSMISSION
SHIFT CONTROL ASSEMBLY
-
R & R
("H" Series Only)
1. Remove control lever knob, lock nut, spring and
reverse release handle.
2. Remove boot retainer, boot and insulator.
3. Pull back edge of carpeting and remove control
assembly attaching bolts.
4. Raise vehicle on hoist. Remove retaining pins and
disconnect control rods from shift control levers. Remove 3-4
swivel from lever.
5. Disconnect speedometer cable and back-up lamp
switch from transmission.
6. Push 1st-2nd and reverse control rods up to floor pan.
Move shift control assembly rearward and to left until it
clears rear extension, then tip rear of shift control assembly
downward and remove shift control assembly from vehicle.
7. To install, position shift control assembly with lower
seal in floor pan opening and install bolts attaching shift
control assembly to floor pan.
8.
Install insulator, upper seal and retainer, reverse
release handle and spring.
9. Install lock nut and lever knob.
10. Install 3-4 swivel and connect control rods to shift
control levers.
1 1. Connect speedometer cable and back-up light switch
to transmission.
12. Check and adjust shift linkage as required, lower and
remove vehicle from hoist.
SHIFT CONTROL ASSEMBLY
-
REPAIR
(Fig. 78-21
)
1. Remove shift lever shaft retainer and shaft from
control lever housing. Then, remove shift control lever
assembly from control lever housing.
2. Note position of spacers in relation to shift levers and
remove spacers and shift levers from control lever housing.
3. Remove spring bracket and spring from shift control
lever assembly.
4. Remove retainer and control lever pivot pin from shift
control lever assembly and separate control lever bracket
from shift control lever.
5. Clean and inspect all components. Replace all worn,
cracked or broken parts as necessary.
NOTE: If necessary to remove reverse lever adjusting
screw, grind or chisel off the weld and remove screw
from control lever bracket.
6.
If adjusting screw were removed, position shift control
lever into control lever bracket and install pivot pin and
retainer. Install reverse lever adjusting screw but do not weld
at this time.
NOTE: Lubricate all levers and spacers with water
repellant-type of lubricant such as lubriplate or
equivalent.
7. Install shift levers and spacers in control lever
housing.
8. Install spring bracket and spring in control lever
bracket and shift control lever assembly into control lever
housing, making sure lever engages shift levers.
9. Install shift lever shaft and retainer.
10. If removed, adjust reverse lever adjusting screw as
follows:
a. Position shift control lever in 1st-2nd shift lever and
touching interlock plate spacer between 1st-2nd and reverse
shift levers.
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