Installing Rear Bearing Retainer - Pontiac Grand Prix Service Manual

FOUR-SPEED MUNClE MANUAL TRANSMlSSlON
7D-11
TRANSMISSION
CLEANING AND INSPECTION
1. Wash the transmission case inside and out with a
cleaning solvent and inspect for cracks. Inspect the
front face, which fits against clutch housing, for burrs.
If any are present, dress them off with a fine cut mill
file.
2. Wash the front and rear bearings thoroughly in a
cleaning solvent and blow out bearings with wm-
pressed air.
CAUTION: Do not allow the bearings to spin; turn
them slowly by hand. Spinning bearings will damage the
race and balk.
Make sure the bearings are clean, then lubricate them
with light engine oil and check them for roughness.
Roughness may be determined by slowly turning the
outer race by hand.
3. All main drive gear and countergear bearing rollers
should be inspected closely and replaced if they show
wear. Inspect countershaft at the same time and
replace if necessary. Replace all worn spacers.
4. Inspect all gears and first speed gear bushing and, if
necessary, replace all that are worn or damaged.
5. The bushings used in the idler gear are pressed into
the gear, then peened into holes in the bores and are
bored in place. This insures the positive alignment of
the bushings and their snafts, as well as proper
meshing of the gears. Because of the high degree .of
accuracy to which these parts are machined, the
bushings are not serviced separately.
Check bushings for excessive wear by using a narrow
feeler gauge between the shaft and bushing or use a
micrometer. The proper clearance is from .003" to
.005".
ASSEMBLE
1. From the rear of m~inshaft, assemble the second
speed gear (with hub of gear toward rear of shaft).
2. Install 1-2 synchronizer clutch assembly to main-
shaft (sliding clutch sleeve taper toward the rear, hub
to the front), together with a synchronizing ring on
either side so their keyways line up with the clutch
keys (Fig. 7D-19).
3. Press first gear sleeve onto mainshaft, using a 1
3/4" I.D. pipe cut to convenient length.
4. Install the first speed gear (with h i b toward front)
and, using a 1-5/8" I.D. pipe cut to a suitable length,
press on the rear bearing (snap ring groove toward
front of transmission). Firmly seat the bearing (Fig.
7D-20).
4
5. Choose the correct selective
fit
snap ring (.087",
.090", .093" or .096") and install it in the groove in
mainshaft behind rear bearing. With proper ring,
maximum distance between snap ring and rear face of
bearing will be from zero to .005".
NOTE: Always use new snap rings when reassembling
transmission and do not expand the snap ring further
than is necessary for assembly.
6. Install the third speed gear (hub to front of
transmission) and the third speed gear synchronizing
ring (notches to front of transmission).
Fig. 70-22 Loading Countergear Bearing using J
Fig. 7D-21 Installing Rear Bearing Retainer 22379.