Chevrolet 70 1969 Series, Shop Manual

Page: 831 / 913

TRANSMISSION AN D CLUTCH 7-85
N O T E : R em ote control a sse m b ly is used
o n ly on tilt c a b m odels.
1. Position transm ission gearshift lever in “ N ” (N eutral)
and disconnect shift control rods from shift levers on re­
m ote control assembly.
2. Rem ove retainer, plunger pin spring, and plunger pin.
IM P O R T A N T : W h e n re m o v in g rem ote control
a s se m b ly in the fo llo w in g step, kee p th e a s ­
s e m b ly sligh tly tilted to the left, a s s h o w n . This
Y V - 10
-li
Gearshift Knob
Pin
Spring
Compression Cup
Felt Ring
Tower
Snap Ring
Rock Shaft
1st and Reverse
Shift Finger
Shift Finger Stud
Gasket
12 Shifter Housing
13 Plunger
14 Plunger Spring
15 Plunger Retainer
16 Plunger
17 Washer
18 Nut
19 Washer
20 Cap Screw
21 Compression Collar
22 Gearshift Lever
23 Grommet
T
- 4 1 1 5
Figure 4 — Gearshift Lever a n d Control T ow er A ssem bly (U sed on C onv.
C a b M odels)
w ill pre ven t the p lu n g e r fro m fa llin g ou t o f the
1st a n d reverse shift fin g e r a n d into the bottom
o f the tran sm ission .
3. Rem ove rem ote control assem bly-to-shifter housing
attaching parts and remove assembly from transm ission.
REMOVAL OF SHIFTER H O U SIN G
(Key N u m bers Refer to Figure 1)
1. Remove shifter housing-to-transm ission case attaching
parts.
N O T E : U se care d u r in g re m o v a l o f shifter h o u s­
in g to pre ven t loss o f the three p o p p e t s p rin g s
a n d b alls (1 6 a n d 17).
2. Carefully lift shifter housing (7) straight up from the
transmission case (56).
3. Rem ove and discard the shifter housing gasket.
REMOVAL OF M AIN SH AFT A N D
M A IN DRIVE GEAR
(Key N u m bers Refer to Figure 1)
1. Remove clutch housing (3) an d clutch release m echa­
nism as an assem bly by removing four bolts retaining
clutch housing to transm ission case (56). Also remove
mechanical parking brake com ponents, when used, from
transm ission as described in applicable Service M anual,
under “ P A R K IN G B R A K E ” (SEC. 5C).
2. Engage 2nd and 3rd synchronizer (23) with m ainshaft
2nd speed gear (24), and engage 4th and 5th synchronizer
(5) with m ainshaft 4th speed gear (13) to lock transm is­
sion in two gears.
3. Remove com panion flange or yoke retaining nut (35).
Use puller J-7804 to remove flange (34).
4. Rem ove speedom eter driven gear (36) and adapter
from m ainshaft rear bearing cap (31).
5. Remove attaching parts retaining m ainshaft and
countershaft rear bearing caps (31 and 38) to transm ission
case. Separate bearing caps and gaskets from transm is­
sion case. Discard gaskets.
6. Rem ove cotter pin and countershaft rear bearing nut
(39) from rear end of countershaft (55). Discard cotter
pin.
7. Rem ove attaching parts retaining main drive gear
bearing cap (2) to the transm ission case. R em ove bearing
cap and gasket. Discard Gasket.
N O T E : It is possible d u r in g re m o v a l of th e m a in
drive g e a r for so m e of the m a in s h a ft pilot
b e a rin g rollers (4 ) to fall into the b c tto m o f the
tran sm issio n case.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L