Chevrolet 70 1969 Series, Shop Manual

Page: 421 / 913

TRANSMISSIONS AND CLUTCHES 7B-16
ponents during assembly. Refer to LU B R IC A T IO N
(SEC. 0) in this manual for explanation of High
Temperature Grease.
C AU TIO N: Do not apply an excessive amount
of grease in the above areas, as under normal
operation this grease would be thrown onto clutch
facings resulting in clutch failure.
2. Shift the transmission into high gear.
3. Mount transmission on dolly or jack and
move into position under the vehicle.
N O T E : On models equipped with "Apron”
type flywheel housing, position the clutch release
bearing and support assembly inside the flywheel
housing. Be sure the clutch fork properly engages
the clutch release bearing.
4. Align the transmission main drive gear
shaft with the clutch disc hub by rotating the
transmission companion flange. Move the trans­
mission forward, guiding the main drive gear
shaft into the clutch disc splines.
IM P O R T A N T : Avoid springing the clutch
when the transmission is being installed to the
engine. Do not force the transmission into clutch
disc splines. Do not let transmission drop or hang
unsupported in the splined hub of the clutch disc.
5. Install clutch housing-to-engine flywheel
housing mounting bolts and washers (except on
vehicles equipped with "A pron” type flywheel
housing). Tighten bolts to 25 to 30 foot-pounds
torque.
N O T E : On vehicles equipped with "A p ron”
type flywheel housing, install transmission-to-
flywheel housing mounting bolts and lock washers.
Tighten bolts to 60 to 65 foot-pounds torque.
6. If the engine rear mountings were re­
moved, reinstall the mounts as covered in EN G IN E
M O U N T IN G S (SEC. 6D). Be sure all mounting
bolts are properly torqued.
7. Install transmission rear mount (when
used) as described under “ Transmission Rear
Mount Installation.”
8. On vehicles equipped with Fuller trans­
mission, connect air-intake line to air filter.
9. If vehicle is equipped with power take-off,
reinstall unit and controls on transmission.
10. Install engine ground strap and battery
cable support clip, if attached to transmission.
11. Connect propeller shaft to transmission
as described in “ P R O P E L L E R S H A F T S ” (SEC.
4D).
N O T E : Proper torque values for the main­
shaft flange or yoke retaining nut is given under
“ Rear Oil Seal Replacement” later in this section.
12. Connect mechanical parking brake lever
and controls (when used). Adjust brake, if neces­
sary, as outlined in “ P A R K IN G B R A K E ” (SEC.
5C).
13. Connect electrical wiring to back-up light
switch mounted on transmission.
14. Reconnect clutch control linkage.
15. Connect speedometer cable to adapter at
transmission (when used).
N O T E : Some vehicles are equipped with a
speedometer driven from the front axle.
16. If other equipment (exhaust pipe, support
brackets, etc.) was removed, reinstall these parts.
17. Shift the transmission into neutral. On
vehicles equipped with a conventional gearshift
lever, reinstall gearshift lever and control tower
assembly.
N O T E : On conventional cab models with New
Process transmission, install gearshift lever us­
ing tool J-8109 as shown in figure 2,
18. On tilt cab models, reconnect shift con­
trol rods to the transmission.
19. On vehicles equipped with Fuller trans­
mission, reconnect range shift control lines to air
valve on the transmission.
20. Fill transmission with lubricant recom­
mended in L U B R IC A T IO N (SEC. 0) of this manual.
21. If necessary, adjust clutch or transmis­
sion control linkage to achieve proper transmis­
sion operation.
REAR OIL SEAL REPLACEMENT-MANUAL TRANSMISSONS
The lip-type oil seal used at rear of Clark,
New Process or Spicer transmissions can be
replaced without removing transmission from
vehicle. Replace rear oil seal as follows:
R E M O V A L
1. Drain lubricant from transmission.
2. Disconnect propeller shaft from transmis­
sion as described in “ P R O P E L L E R S H A F T S ”
(SEC. 4D) of this manual.
3. Remove parking brake (when used) from
rear of transmission as described in “ P A R K IN G
B R A K E ” (SEC. 5C).
4. Disconnect speedometer cable and remove
speedometer driven gear from mainshaft rear
bearing cap.
5. Using flange or yoke holding tool, remove
the output yoke or companion flange nut. Pull out­
put yoke or companion flange off mainshaft.
6. Remove mainshaft rear bearing cap and
gasket. Discard gasket.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK S H O P M A N U A L