Chevrolet 1977 10 Series, Repair Manual, Page: 384 / 468

7B-4
OVERHAUL MANUAL
Fig. 7 B -8 A ~ R e m o v in g Rear B e a rin g R e ta in in g Ring
CLEANING AND INSPECTION
Transmission Case
1. Wash the transm ission thoroughly inside and outside
with cleaning solvent, then inspect the case for cracks.
2. Check the front and rear faces for burrs, and if
present, dress them off with a fine mill file.
3. Check bearing bores in case and, if damaged, replace
case.
Front and Rear Bearings
1. Wash the front and rear ball bearings thoroughly in
a cleaning solvent.
2. Blow out bearings with compressed air.
CAUTION: Do not allow the bearings to spin, turn
them slowly by hand. Spinning bearings may
damage the race and balls.
3. M ake sure bearings are clean, then lubricate with light
engine oil and check them for roughness by slowly turning
the race by hand.
Bearing Rollers
All clutch gear and counter gear bearing rollers should
be inspected closely and replaced if they show wear. Inspect
counter shaft and reverse idler shaft at the same time, replace
if necessary. Replace all worn washers.
Gears
1. Inspect all gears for excessive wear, chips or cracks
and replace any that are worn or damaged.
2. Inspect reverse gear bushing and if worn or damaged
replace the entire gear.
NOTE:
Reverse gear bushing is not serviced separately.
3. Check both clutch sleeves to see that they slide freely
on their hubs.
Reverse Idler Gear Bushing
The bushing used in the idler gear is pressed into the gear
and finished bored in place. This insures the positive
alignment of the bushing and shaft as well as proper meshing
of the gears. Because of the high degree of accuracy to which
these parts are machined, the bushing is not serviced
separately.
REPAIRS
Clutch Keys and Springs
Replacement
NOTE:
The clutch hubs and sliding sleeves are a
selected assembly and should be kept together as
originally assembled, but the keys and two springs may
be replaced if worn or broken.
1. M ark hub and sleeve so that they can be matched
upon reassembly.
2. Push the hub from the sliding sleeve, the keys and the
springs may be easily removed.
3. Place the three keys and two springs in position (one
on each side of hub) so all three keys are engaged by both
springs (Fig. 7B-10A). The tanged end of each synchronizer
SLEEVE
S P R IN G
Fig. 7B-9A-Removing Rear Bearing From Mainshaft Fig. 7B -10A-Syn ch ro nizer Assembly