Chevrolet 1977 10 Series, Руководство по ремонту, Страница: 386 / 468

7B-6 OVERHAUL MANUAL
6 2-3 Synchronizer
Assembly
7. 2nd Speed blocker
Ring
8 2nd Speed Gear
9 Shoulder (Part of
Main Shaft)
10 1st Speed Gear
1. Drive Gear
2. Drive Gear Bearing
3. 3rd Speed Blocker
Ring
4. M ainshaft Pilot
Bearings (14)
5 Snap Ring
11. 1st Speed Blocker
Ring
12. 1st Speed
Synchronizer
Assembly
13. Snap Ring
14
Reverse Gear
15. Reverse Gear Thrust
W asher
16. Spring W asher
17. Rear Bearing
18. Snap Ring
19
Speedo Drive Gear
and Clip
20. M ainshaft
Fig. 7B-1 5 A -C lu tc h G ear and M a in s h a ft A s s e m b ly
3. Install the second and third synchronizer assembly
with the fork slot downward; press it onto splines on the
mainshaft until it bottom s out. Both synchronizer assemblies
used in this transm ission are identical. (If sleeve becomes
removed from 2-3 hub; notches on hub O.D. face forward end
of mainshaft.)
CAUTION:
Be sure the notches o f the blocker ring
align with the keys o f the synchronizer assembly.
4. Install snap ring retaining synchronizer hub to
mainshaft. Both synchronizer snap rings are identical. Turn
the rear of the m ainshaft upward. Install the following
components on the mainshaft:
5. Install the first speed gear with clutching teeth
upward; the front face of the gear will butt against the flange
on the mainshaft.
6. Install a blocker ring with clutching teeth downward
over synchronizing surface of the first speed gear.
7. Install the first and reverse synchronizer assembly
with fork slot downward; push it onto splines on the
mainshaft.
8. Install synchronizer hub to m ainshaft snap ring.
CAUTION:
Be sure the notches o f the blocker ring
align with the keys o f the synchronizer assembly.
9. Install reverse gear with clutching teeth downward.
10. Install reverse gear thrust washer (steel).
11. Install reverse gear spring washer.
12. Install rear ball bearing with snap ring slot
downward; press onto mainshaft.
13. Install rear bearing to m ainshaft snap ring.
14. Install speedometer drive gear and retaining clip.
A S S E M B L Y O F T R A N S M IS S IO N (FIG. 7 B -1 8 A )
1. Using Tool J-22246 load a row of roller bearings (27)
and a bearing thrust washer at each end of the countergear.
Use heavy grease to hold them in place (Fig. 7B-16A).
2. Place countergear assembly through case rear opening
along with a tanged thrust washer (tang away from gear) at
each end and install countergear shaft and w oodruff key from
rear of case.
CAUTION:
Be sure countershaft picks up both
thrust washers and that the tangs are aligned with
their notches in the case.
3. Install reverse idler gear and shaft with its w oodruff
key from the rear of case. D o not install idler shaft "E" ring
yet.
4. Using snap ring pliers, expand the snap ring in the
extension and assemble extension over rear of mainshaft and
onto rear bearing. Seat snap ring in rear bearing groove (Fig.
7B-4A).
5. Load the m ainshaft pilot bearings (14) into the clutch
gear cavity and assemble the 3rd speed blocker ring onto the
clutch gear clutching surface with its teeth tow ard the gear.