Shifting Difficulty Diagnosis - Pontiac TRANS AM 1977 Service Manual

MANUAL TRANSMISSIONS 78-1 5
c. Main drive gear bearing
gasket damaged
d. Side cover loose or
gasket damaged
e. Rear bearing retainer
oil seal leaks
f. Countershaft loose in
case
g. Shift lever seals leak
h. Center support loose,
leaks
c. Replace gasket
d. Tighten cover or replace
gasket
e. Replace seal
f. Replace case
g. Replace seal
h. Tighten bolts or
replace sealer
SHIFTING DIFFICULTY DIAGNOSIS
CONDITION PROBABLE CAUSE CORRECTION
H~gh Shift Effort-Column Binding of column levers Adjust column mechanism
Shift (Effort exceeds per Section 9, Steering.
2 ft. lbs. at lever knob Clean and lubricate all
with transmission rod and swivel connections.
linkage disconnected.)
Lever end play exceeds Adjust levers
.005 in.
Misalignment of column Adjust levers
control levers.
High Shift Effort-Floor
Shift (3-Speed and
4-Speed Transmissions)
Improper linkage
adjustment
Lost motion due to
damaged or worn swivels,
rods, grommets or
mountings.
Loose lever attaching
bolts.
Binding
Stiff shift lever boot
High Shift Effort
-
Floor Shift
Shift cover improperly
positioned.
Adjust linkage
Repair or replace defective
components.
Tighten bolts and check levers
for correct fit on shifter
shafts.
Clean and adjust linkage
Replace boot
- -
Loosen and align-should
have side travel in all gears.
(5-Speed 77mm Trans.)
Synchronizers improperly
assembled or damaged.
Shift handle binds
Blocker ring does not
release
.
No side travel freedom
in 1st & 5th.
Shift handle interfers
with top of shifter head.
Shift rail bent
Repair as necessary
-
spring
tang must not touch I.D. of
synchronizer hub.
Repair as necessary
Replace ring
Replace shift handle
Add one extra gasket
Replace shift rail