Chevrolet 1977 10 Series, Repair Manual, Page: 416 / 468

7B-36
OVERHAUL MANUAL
J - 2 1465-17
W/HANDLE
J-8092
J—21
Fig. 7B-1 4 K ~ R e m o vin g Rear E xtension B u sh in g
Fig. 7B-1 5K—Installing Rear Extension Seal
Fig. 7 B -16 K—I nsta llin g D rive G ear B e a rin g R e ta in e r Seal
CAUTION: Do not alio w the bearings to spin. Turn
them slowly by hand. Spinning bearings may
damage the race and balls.
REPAIRS
Synchronizer Keys and Springs
Replacement
The synchronizer 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. If relation of hub and sleeve are not already marked,
m ark for assembly purposes.
2. Push the hub from the sliding sleeve; the keys will fall
free and the springs may be easily removed.
3. Place the two springs in position (one on each side
of hub), so all three keys are engaged by both springs (Fig.
7B-13K).
Place the keys in position and while holding them in
place, slide the sleeve onto the hub, aligning the m arks made
before disassembly.
Extension Oil Seal and/or
Bushing Replacement
1. Pry seal from rear of extension.
2. Remove bushing using Tool J-21465-17 with Handle
J-8092. Drive bushing from rear of extension housing (Fig.
7B-14K).
3. Using a new bushing and Tool J-21465-17 with
Handle J-8092, press bushing into extension from rear of
extension.
4. Coat I.D. of bushing and seal with transmission
lubricant. Install new seal using Tool J-2 1359 (Fig. 7B-15K).