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MANUAL TRANSMISSIONS
7 B-4 1
Fig. 78-57 Pressing Rear Bearing From Mainshaft
2.
Blow out bearings with compressed air.
CAUTION: Do not allow the beanngs to spin.
Turn them slowly by hand. Spinning beatings wifl
damage the race and balls.
REPAIRS
Synchronizer Keys and Springs Replacement
(Fig. 78-58)
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,
mark 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.
4. Place the keys in position and, while holding them in
place, slide the sleeve onto the hub, aligning the marks 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 into extension housing (Fig. 7B-59).
3. Using a new bushing and Tool J 2 1465-1 7 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-60).
SPRI N G
SLEEVE-
. .
Fig. 78-58 Synchronizer Assembly
Fig. 78-59 Removing Extension Bushing
Drive Gear Bearing Retainer Oil Seal
Replacement
1. Pry out old seal.
2.
Using a new seal, install new seal into retainer, using
Tool J 21359 until it bottoms in bore (Fig. 7B-61). Lubricate
I.D. of seal with transmission lubricant.
Reverse Shifter Shaft and/or Seal Replacement
1. With extension removed from transmission, the
reverse shifter shaft lock pin will already be removed (see Step
5 under Transmission Disassembly).
2. Remove shift fork.
3. Carefully drive shifter shaft into extension, allowing
ball detent to drop into case. Remove shaft and ball detent
spring. Remove
"0"
ring seal from shaft.
4. Place ball detent spring into detent spring hole and
start reverse shifter shaft into hole in boss.
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