Chevrolet 10 Series 1967, Service Manual

Page: 419 / 605

CLUTCHES AND TRANSMISSIONS 7-33
stall snap ring.
3. Slide a new seal over lever onto the top of the hous­
ing and install the cap, spring and cup. P ress down
on cup to compress spring, and install locking pin
through hole in lever above cup.
Fig . IS - Removing G ea rsh ift Lever
TRANSMISSION COVER
Removal
1. Remove accelerator pedal, floor mat and transmis­
sion cover from body floor.
2. Remove gearshift lever from transmission cover.
3. Remove capscrews attaching transmission cover to
transmission case and remove cover.
CAUTION:
Place a piece of cardboard over
transmission cover opening, using two of the
cover attaching screws to hold it in place. This
will keep anything from falling into the trans­
mission case.
Disassembly
1. Remove plunger retainer (fig. 2S) and spring from
transmission cover, then tilt cover so outer plunger
pin will come out of cover.
2. Remove control lever housing-to-cover bolts, lift
housing from cover and remove gasket.
3. Remove inner plunger pin from first-and-reverse
shifter lever (fig. 3S) and, if control lever housing or
first-and-reverse shifter lever is to be replaced,
remove nut and lockwasher from shifter lever stud.
Tap stud into housing to remove lever.
4. Lift poppet springs from holes in cover (fig. 4S).
Turn cover upside down over a clean container so
poppet balls will drop out of holes into container.
5. Place cover upside down, remove plugs from front of
cover and remove lock wire from set screws in
shifter forks (fig. 5S).
6
. Remove set screws from fourth-and-fifth speed
shifter fork and tap shaft out through hole in front of
cover.
Remove fork. Remove interlock poppet
through opening for shaft (fig.
6
S).
7. Remove set screw from second-and-third shifter
shaft and tap shaft out through hole in front of cover.
Fig. 2S - Removing Plunger Retainer
Remove fork. Slip interlock pin from shaft (fig. 7S).
Remove interlock poppet through hole for shaft
(fig.
6
S).
8
. Remove set screw from first-and-reverse shifter
fork and from shifter head. Tap shaft out through
hole in front of cover, removing fork and head from
shaft.
Assembly
1. With cover upside down on bench, insert first-and-
reverse (longest) shifter shaft through hole in front
of cover and through forward boss. Then slide
shifter head on shaft with slot in head toward center
of cover as shown in Figure
8
S. Push shaft through
rear boss and install set screw through head into
shaft and install lockwire.
2. Install first-and-reverse (smallest) shifter fork on
end of shaft, install set screw and lock with wire.
3. Tilt cover and install interlock poppet into position
against first-and-reverse shaft (fig.
6
S).
4. Insert second-and-third shifter shaft (shaft with hole
for interlock pin) through hole in front of cover and
through forward boss. Slide fork having largest web
onto end of shaft, with fork to rear and install inter-
F ig . 3S - Removing Inner Plunger Pin
CHEVROLET TRUCK SERVICE M ANUAL
TRANSMISSION
COVER
OUTER
PLUNGER
SPRING
CONTROL LEVER
HOUSING
INNER
PLUNGER PIN
FIRST AND REVERSE
/SHIFTER LEVER
CONTROL
LEVER HOUSING