Removing Mainshaft; Removing Or Installing Countergear; Expanding Extension Housing Snap Ring - Pontiac Grand Prix Service Manual

THREE-SPEED SAGINAW MANUAL TRANSMISSION 7B-9
Fig. 78-12 Removing Mainshaft
6. Inspect all gears for excessive wear, chips or cracks.
7. Inspect reverse gear bushing and, if worn or
damaged, replace entire gear.
NOTE: Reverse gear bushing is not serviced separately.
8. Inspect reverse idler gear bushing and, if worn or
damaged, replace entire gear.
9. Check for broken bearing rollers in countergear
assembly.
a. Inspect anti-rattle plate teeth for wear or other
damage.
b. Check for broken anti-rattle springs.
Fig. 78-14 Removing or Installing Countergear
NOTE: The
anti-rattle plate
is riveted to the coudergear
in three (3) places. Disassembly is not recommended
(Fig. 7B-21).
10. If lip seal in front bearing retaine; needs replace-
ment, pry out oil seal with screwdriver. Replace with
new seal, using flat plate, and tap until seal is seated in
its bore (Fig. 7B-22).
NOTE:
L i p
of seal must face rear of bearing retainer.
ASSEMBLE
1. Turn the front of the mainshaft upward and install
second speed gear and synchronizer on mainshaft.
Using hydraulic or arbor press and Press Plate J 21858,
press second-third speed synchronizer assembly (with
chamfer toward rear of transmission) onto mainshaft
(Fig. 7B-23). Install retaining snap ring.
Gear uetails
CA
UTION: Make certain notches in
blocking ring align with keys in synchronizer.
2. Install first speed gear and synchronizer on
mainshaft (Fig. 7B-24). Using hydraulic or arbor
p5ess and Press Plate J 21858, press first speed
synchronizer assembly onto mainshaft. Install
retaining snap ring.
Fig. 78-13 Expanding Extension Housing Snap Ring
Fig. 78-15 Removing Reverse Idler Gear Shaft