Chevrolet 70 1969 Series, Shop Manual

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TRANSMISSION AND CLUTCH 7-34
F ig u re 9 P — S h ift B a r H o u s in g A s s e m b ly (E a r ly T ype)
1. Front Support Boss
2. 4th and 5th Shift Fork
3. 1st and Reverse Shift Lug
4. Lock Screws
5. Lock Wire
6. 1st and Reverse Shift Rod
7. 4th and 5th Shift Rod
8. 2nd and 3rd Shift Fork
9. Rear Support Boss
10. Interlock Balls
11. 1st and Reverse Rocker Lug
12. Pivot Pin
13. 1st and Reverse Shift Bar
14. 1st and Reverse Shift Fork
15. 1st and Reverse Rocker Arm
16. Interlock Cross Pin
17. 2nd and 3rd Shift Rod
18. 2nd and 3rd Shift Lug
15. Remove nut and lock washer from 1st and reverse
rocker arm pin (at top side of cover), then remove
pivot pin (12) and rocker arm (15) from bottom side
of housing.
F ig u re 1 0 P — 1st a n d R e v e rse S h ift L u g a n d Latch P lu n g e r
MAINSHAFT DISASSEMBLY
Key numbers in text refer to Figure 11 P unless other­
wise specified.
1. Remove the 4th and 5th speed synchronizer assembly
(8) from the mainshaft (43).
2. Remove 1st and reverse sliding gear (42) from m ain­
shaft; then place balance of the assembly in a vise
with copper or brass jaws so splines will not be dam ­
aged. The assembly should be positioned in vise with
the front end up.
3. Using snap ring picks (J-8461-1), remove snap ring
(9) holding the 4th speed gear (13) to mainshaft (43).
4. Turn 4th speed gear retaining washer (10) to align in­
ternal splines of washer with splines of mainshaft (43)
and remove the washer (10).
5. Remove the 4th speed gear (11) from mainshaft (43).
6. Remove mainshaft assembly from vise and with the
front end pointed down, lightly pound the assembly
against a block of wood. This will cause weight of 3rd
speed gear (14) to force 4th speed gear bushing sleeve
(12) off mainshaft (43). After bushing sleeve has loos­
ened, remove it with 4th speed gear locating washer
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L