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78-56
1977 PONTIAC SERVICE MANUAL
.~Y',I
W O V 7 t L A 5 < t ' ' h I
8
Fig. 78-1 11 lnstalling lnput Shaft Needle Thrust Bearing
Fig. 78-1 14 lnstalling Output Shaft, Mainshaft and
Countergear into Center Support
23. Install second and third shift link through slot and
engage in shift fork.
24. Locate interock pawl to permit first and reverse shift
link to be installed in inboard slot of center support.
25. Install first and reverse shift link into shift fork.
26. If the selector arm was removed during disassembly,
install the selector arm over shift rail, aligning hole in selector
arm with the hole near middle of rail. Drive roll pin into arm
and rail.
27. Install shift rail through shift fork from front to rear
with poppet notches located to rear of transmission (Fig. 7B-
117).
28. Engage shift fork with first and reverse synchronizer
sleeve and install these parts by sliding synchronizer hub over
output shaft, with chamfered edge of sleeve towards front
(Fig. 7B-118).
Fig. 78-1 12 Installing Input Shaft Needle Rollers
29. Guide shift rail through interlock pawl, second and
third shift fork and fourth and fifth shift fork. Be sure selector
I
arm is aligned with notch in shift link.
I
Fig. 78-1 1 3 lnstalling Needle Thrust Bearing and Race to
I
Output Shaft
30. Install snap ring in shaft groove (Fig. 7B-119).
31. Install blocker ring and first speed gear over output
shaft, behind first and reverse synchronizer assembly. Align
notches on blocker ring with notches in synchronizer hub.
32. Install thrust washer and snap ring behind first speed
gear (Fig. 7B- 120).
33. Install speedometer gear retainer in hole in output
shaft with retainer loop forward. Slide speedometer gear over
output shaft and retain until retainer snaps up to lock gear.
34. Slide rail selector, with hole in selector, onto shift
rail with its ball facing inboard and retain with roll pin (Fig.
7B-121).
35. Install selector lever and shift rail into hole provided
in extension housing. Install shifter head on rail, as rail
becomes exposed in housing opening. Do not install roll pin
at this time (Fig. 7B- 122).
necessary.
CAUTION: Be sure to use the correct needle
bearing. Other bearings in this transmission are
similar in length but have a different diameter.
21. Install fourth and fifth shift link through slot and
engage in shift fork.
36. Apply a continuous 1/32" bead of RTV (Room
22. Assemble the second and third shift fork on second
Temperature Vulcanizing) sealer to transmission case and
and third sliding sleeve. Locate interlock pawl to permit shift
extension housing. Be sure needle rollers in extension housing
link to be installed through center slot in center support.
are retained with petroleum jelly.
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