Chevrolet 70 1969 Series, Shop Manual

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TRANSM ISSIO N AND CLUTCH 7-48
F ig u re 9 — S h ift B a r H o u s in g A s s e m b le d ( E a r ly T y p e )
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
1 2. 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
DISASSEMBLY OF SUBASSEMBLIES
CONTROL TOWER DISASSEMBLY
Key numbers in text refer to Figure 8.
NOTE: On transmissions having a conventional
gearshift lever, accomplish the following pro­
cedures:
1. Remove shift lever knob and dust cover (2) from shift
lever (3).
2. Remove gearshift lever support spring (5) and support
spring washer ( I).
3. Push gearshift lever (3) out through bottom of control
tower top (6). Remove Shift lever pivot pins (4).
SHIFTER BAR HOUSING DISASSEMBLY
Key numbers in text refer to Figure 9 or 10.
1. It is suggested that each shift rod, shift fork and shift
lug be tagged so they can be properly positioned when
the shift bar housing is reassembled (fig. 9 or 10).
2. Place shift bar housing on bench upside down with
Welch plug openings toward repairman. Remove
three shift rod hole Welch plugs.
3. Remove lock wire (5) from shifter lugs and shift
forks; then shift all rods into “ N eutral" position.
4. Remove lock screw (4) from 2nd and 3rd shift fork
(8) and from 2nd and 3rd shift lug (18).
5. While holding hand over poppet ball hole in housing
rod support to prevent loss of poppet ball and spring,
remove 2nd and 3rd shift rod (17), lug (18), and fork
(8), from housing. Remove poppet ball and spring.
6. Remove lock screw (4) from 4th and 5th shift fork
(
2
).
7. While holding hand cover poppet ball hole to prevent
loss of poppet ball and springs, remove 4th and 5th
shift rod (7), and fork (2) from housing. Remove pop­
pet ball, springs, and interlock cross pin (16).
8. Remove lock screw (4) securing 1st and reverse shift
CHEVROLET SERIES 70-80 HEAVY DUTY TRUCK SH O P M A N U A L