Chevrolet 1977 10 Series, Repair Manual, Page: 418 / 468

7B-38
OVERHAUL MANUAL
ROLLERS
SPACERS
Fig. 7 B -1 9 K ~ C o u n te rg e a r C ross S e ctio n
ASSEMBLY OF M A IN S H A FT
1. From rear of m ainshaft, assemble the 2nd speed gear
(with hub of gear tow ard rear of shaft).
2. Install lst-2nd synchronizer clutch assembly (sliding
clutch sleeve taper tow ard rear, hub to front) on the
mainshaft together with a synchronizer ring on both sides of
the clutch assemblies.
3. Position the 1st gear sleeve on the shaft and press the
sleeve onto the m ainshaft until the 2nd gear, clutch assembly
and sleeve bottom against the shoulder of the mainshaft (Fig.
7B-21K).
4. Install 1st speed gear (with hub toward front) and
supporting inner race, press the rear bearing onto the
mainshaft with the snap ring groove toward front of the
transmission (Fig. 7B-22K).
5. Install spacer and new correct selective fit (thickest
that will assemble) snap ring in mainshaft behind rear
bearing.
6. Install the 3rd speed gear (hub to front of
transmission) and the 3rd speed gear synchronizing ring
(notches to front of transmission).
Fig. 7 B -2 1 K—I nsta 11 i ng 1st G ear Sleeve
7. Install the 3rd and 4th speed gear clutch assembly
(hub and sliding sleeve) with taper tow ard the front making
sure that the keys in the hub correspond to the notches in
the 3rd speed gear synchronizing ring.
8. Install new selective fit snap ring (thickest that will
install) in the groove in mainshaft in front of the 3rd and 4th
speed clutch assembly.
9. Install the rear bearing retainer over end of mainshaft.
Spread the snap ring to drop around the rear bearing. Release
snap ring when it aligns with groove in rear bearing.
10. Install the reverse gear (shift collar to rear).
11. Install a snap ring, the speedom eter drive gear and
a second snap ring, onto the mainshaft.
ASSEMBLY OF TR A N SM ISSIO N
1. Place the transmission case on its side with the shift
cover opening tow ard the assembler. Position the countergear
tanged washers in place, using a heavy grease to retain them.
NOTE:
Be sure the tangs are in the notches of the thrust
face.
Fig. 7B -2 0K -C hecking Countergear End Play
Fig. 7 B -2 2 K -ln s ta llin g Rear Bearing