Chevrolet 70 1969 Series, Shop Manual

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TRANSMISSION AN D CLUTCH 7-65
as shown in Figure 8; then using a chain hoist,
carefully raise the assembly to clear the case.
N O T E : The first sp e e d g e a r a n d b u s h in g a s s e m ­
bly (5 4 ), a n d reverse s lid in g g e a r (5 3 ) w ill fall
Figure 1 1 — R e m o v in g Countershaft Front B earing
o ff the m a in s h a ft d u rin g rem oval. H a n g on to
these parts to pre ven t th e m from fa llin g a n d
b e in g d a m a g e d .
b. After the mainshaft assembly has been removed,
remove first speed gear and bushing assembly
(54), and reverse sliding gear (53) from trans­
mission case.
REVERSE IDLER G E A R R E M O V A L
1. Remove bolt and lock washer (40) holding reverse
idler lock plate (39) at rear of transmission case and
remove lock plate (39).
2. Using bearing puller (J-6648) and a piece of 1/8”
steel stock mounted as shown in Figure 9, pull reverse
idler shaft (41) from transmission case. Remove rev­
erse idler gear (44) from case.
3. Remove two reverse idler gear bearings (42 and 45)
and spacer (43) from hub of reverse idler gear (44).
C O U N T E R S H A F T R E M O V A L
1. Remove countershaft rear bearing retainer nut (8);
then push countershaft (38) toward rear of transmis­
sion case (6) far enough so that countershaft rear
bearing (7) can be removed (fig. 10). Remove locating
ring from bearing; then using bearing puller (J-
1. Shift Bar Housing
2. Housing to Case Attaching
Bolts
3. Control Top Oil Baffle
4. Shift Rod Hole Welch Plugs
5. 2nd and 3rd Shift Lug
6. Lock Screws
7. 4th and 5th Shift Fork
Fig. 12— Shift Bar H o u sin g Com p onents
8. Latch Plunger
9. Latch Plunger Spring
10. 1st and Reverse Shift Lug
11. Latch Plunger Adjusting
Nut
12. 2nd and 3rd Shift Rod
13. 4th and 5th Shift Rod
14. 1st and Reverse Shift Rod
15. Poppet and Interlock Balls
16. Poppet Springs
17. 1st and Reverse Shift
Fork
18. Interlock Cross Pin
20. Lock Washer
21. Interlock Hole Welch Plug
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK S H O P M A N U A L