Chevrolet CHEVY VAN G10 SERIES Service Manual page 247

SPEEDOMETER D R IV E N GEAR REPLACEMENT
D isconnect speedom eter cable, remove lock plate to housing
b o lt and lock washer and remove lock plate. Insert screw
driver in lock plate slot in fitting and pry fitting, gear and shaft
from housing. Pry "0 " ring from groove in fitting.
I n s t a ll n e w " 0 " r in g in g r o o v e in f it t in g , c o a t " 0 " r in g a n d
d r iv e n geaT s h a f t w it h t r a n s m is s io n lu b r ic a n t a n d in s e r t
Hold the assembly so slot in fitting is tow ard lock plate boss
on housing and install in housing. Push fitting into housing
until lock plate can be inserted in groove and attached to
housing.
TRANSMISSION SIDE COVER
REPLACEMENT/REPAIR (Fig. 10)
1. Shift transm ission into neutral detent positions. Remove
attaching bolts and shift levers from shifter shafts at side
cover.
2. D isconnect backing lamp and "T.C .S." sw itch wiring at
switches.
3. Remove side cover bolts and remove cover assembly from
transm ission case and allow oil to drain from case.
4. Remove b o th shift forks from shifter shaft assemblies.
Remove b o th shifter shaft assemblies from cover. Seals in
cover may be pried o ut if replacem ent is required because
o f damage.
5. Remove d etent cam spring and pivot retainer " C" ring.
Remove b o th d etent cams.
6
. W ith detent spring tang projecting up over the 2nd and
3rd shifter shaft cover opening install the first and reverse
detent cam o nto the d etent cam pivot pin. With the
d etent spring tang projecting up over the first and reverse
shifter shaft cover hole install the 2nd and 3rd d etent
cam.
TURBO HYDRA-MATIC 350 TRANSMISSION
General D e s c r ip tio n ........................................................... . . . 7-9
M aintenance an d A d ju s tm e n ts ....................................... . . . 7 -1 0
Oil Level C h e c k ............................................................. . . . 7 -1 0
P eriodic Oil C h a n g e ...................................................... . . . 7 -1 0
M anual Shift Linkage Check and A djustm ent . . . . . . 7-11
D ete n t Cable A djustm ent .......................................... . . . 7 -1 2
Transm ission R e p la c e m e n t............................................... . . . 7 -1 2
O ther Service O p e r a tio n s ................................................. . . . 7-13
The purpose o f a transm ission is to provide suitable gear
ratios betw een th e engine and rear wheels for all driving
conditions. The T urbo Hydra-M atic 350 is a fully auto m atic
shaft.
1ST &
SHIFTER SHAFT
Fig. 1 0 —Transmission Side Cover Assembly (3-Speed Saginaw Shown)
7. Install d etent cam retaining "C" ring to pivot shaft, and
8
9. Shift shifter levers into neutral detent (center) position
10. Install cover attaching b olts and tighten evenly to speci­
11. Install outer shifter levers. Tighten bolts to specifications.
12. Remove filler plug and add lubricant specified in Section
INDEX
P age
T urbo Hydra-M atic Diagnosis Procedure ............ ............ 7 -1 3
GENERAL DESCRIPTION
3-speed transm ission encased in a two-piece alum inum casting
(m ain housing and extension). The transm ission consists pri-
m arily o f a hydraulic torque converter and com pound plan-
CLUTCHES & TRANSMISSIONS 7-9
DETENT CAM
__.
RETAINER RING
hook spring into d etent cam notches.
. Install b o th shifter shaft assemblies in cover being careful
n o t to damage seals. Install b o th shift forks to shifter
shaft assemblies, lifting up on detent cam to allow forks
to fully seat into position.
and slide cover into place making sure the shift forks are
aligned w ith their respective m ainshaft clutch sliding
sleeves.
fied torque. Install TCS sw itch and connect wiring.
0
, to level o f filler plug hole.
S e q u e n c e .................................................................. ............ 7-13
Oil Level and C ondition C h e c k ......................... ............ 7 -1 3
M anual L in k a g e ...................................................... ............ 7-13
Oil L e a k s .................................................................. ............ 7 -1 4
Case P orosity R e p a i r ............................................ ............ 7 -1 4
V acuum M odulator C h e c k s ................................ ............ 7-15
Transmission Shift Points .................................. ............ 7-17
DETENT SPRING
CAM
2-3 SHIFT
FORK
SHAFT
. CAM
P ag e
C H E V Y V A N S H O P M A N U A L