Chevrolet 10 1971 Series Chassis Service Manual page 284

CLUTCHES AND TRANSMISSIONS 7-8
4. Place clean lint-free cloth or other suitable covering
over opening on transmission to prevent entry of
d i r t or foreign material ( a p pl i es to 4-speed
transmissions).
5. Disconnect parking brake lever and controls (when
used) and back up lamp switch wire.
6. If vehicle is equipped with power take-off, remove
unit and controls from transmission. Place protec­
tive covering over opening.
7. Disconnect propeller shaft from transmission as
described in " PROPELLER SHAFTS" (SEC. 4) of
this manual.
8. Position a suitable dolly or jack under the vehicle
and adjust to carry the weight of the transmission.
9. Visually inspect to determine if other equipment,
lines or brackets must be removed to permit re­
moval of the transmission.
10. Remove flywheel housing underpan and transmission-
to-flywheel housing mounting bolts.
Be sure to support the clutch
IMPORTANT:
release bearing and support assembly during re­
moval of the transmission main drive gear from
the flywheel housing. This will prevent the re­
lease bearing from falling out of the flywheel
housing when the transmission is removed.
11. Move the transmission assembly straight away from
the engine, using care to keep the transmission main
drive gear shaft in alignment with the clutch disc hub.
When removing the transmission,
IMPORTANT:
do not allow the weight of the transmission to
hang on the clutch disc hub, as the disc will be­
come distorted, seriously
operation.
12. When the transmission is free from the engine,
lower the transmission and move from under the
vehicle.
13. If desired, a careful check of clutch components
should be made after the transmission has been
removed. If the clutch requires repair, refer to
"CLUTCHES" (Section 7) before transmission is
reinstalled in the vehicle.
Installation— Except "K " Series Models
1. Apply a light coating of High Temperature Grease to
the main drive gear bearing retainer and splined
portion of transmission main drive gear shaft to
assure free movement of clutch and transmission
components during assembly.
Do_ not apply an excessive amount
CAUTION:
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.
4. Align the transmission main drive gear shaft with the
clutch disc hub by rotating the transmission com­
panion flange or output yoke. Move the transmission
forward, guiding the main drive gear shaft into the
clutch disc splines.
Avoid springing the clutch when
IMPORTANT:
affecting c l u t c h
the transmission is being installed to the engine.
Do not force the transmission into the clutch
disc hub. Do not let the transmission hang un­
supported in the splined portion of the clutch
disc.
Install flywheel housing-to-transmission mounting
bolts and washers. Tighten bolts to 40-50 ft.lbs.
torque,
5. If vehicle is equipped with power take-off, reinstall
unit and controls on transmission.
6. Connect propeller shaft to transmission as de­
scribed in "PROPELLER SHAFTS" (Section 4) of
this manual. Remove transmission jack.
7. Connect parking brake lever and controls (if used).
Adjust brakes as outlined in "PARKING BRAKE"
(Section 5) of this manual.
8. Install flywheel housing
screws firmly.
9. Reconnect speedometer cable to adapter at trans­
mission, Connect back-up lamp switch wire and
TCS switch.
10. Reinstall shift controls on transmission.
On vehicle equipped with 3-speed trans­
NOTE:
mission, reconnect shift levers to transmission
side cover.
On vehicle equipped with 4-speed new process
transmission perform the following: Shift the
transmission into neutral, install transmission
cover and gearshift lever, transmission floor
pan cover and floor mat.
On vehicle equipped with Muncie 4-Speed
transmission, install gearshift lever using Tool
J-8109 as shown in Figure 11. Press down
firmly and rotate clockwise to install gearshift
lever. Install transmission floor pan cover and
floor mat.
11. If other equipment (exhaust pipe, support brackets,
etc.) was removed, reinstall these parts.
12. Refill transmission with lubricant recommended in
LUBRICATION (Section 0) of this manual.
13. If necessary, adjust clutch or transmission control
linkage to achieve proper transmission operation.
Replacement— "K" Series
3-Speed Transmission
1. Raise vehicle
2. Drain transfer case and transmission. Disconnect
the speedometer cable from speedometer driven
gear fitting, and TCS switch connections.
3. Disconnect propeller shafts from U-joint yoke at
case, and tie up out of way.
4. Remove bolt holding the shift lever control assem­
bly to the adapter assembly. Push assembly to one
side and tie up out of way.
5. Support transfer case in a suitable cradle. Remove
bolts attaching transfer case to adapter.
6. Remove bolts attaching transfer case to frame
bracket at right side of case and remove case from
adapter.
7. Disconnect shift control rods from the shifter levers
at the transmission.
8. Support rear portion of engine. Remove two (2)
adapter mount bolts.
underpan. Tighten cap
10-30 CHEVROLET TRUCK SERVICE MANUAL