Chevrolet 70 1969 Series, Shop Manual

Page: 157 / 913

REAR SUSPENSION 4A - 18
2. Install motor assembly grommet (7), then
install gasket (5) on housing. Install motor (6) and
cover (4) into housing. Install three screws and
lock washers (1) and two stop nuts (2). Install
motor cover cable clip (3) under outer screw.
Tighten screws and nuts firmly.
3. Attach motor wires to switch terminals.
The red or longer wire attaches to bottom term­
inal. Tighten inside terminal nuts (19) firmly.
4. With a screwdriver inserted into slot of
drive screw (20), install bearing (12) on end of
screw with shielded side of bearing toward inside.
Retain bearing with bearing lock nut (13).
5. Run nut to center of screw, then insert
slotted end of screw into housing, meshing slotted
end with armature shaft. N O T E : Fiber bumper
contact on drive nut must be toward switch.
6. Install gasket (14) and cover (15) with three
screws and lock washers (16). Tighten screws
firmly.
7. If the assembly consisting of shift fork
actuating lever (22), torsion spring (23), and spring
winding lever (24) has been separated, reassem­
ble. With shift fork actuating lever (22) in vise,
assemble parts as shown in figure 28. Turn the
spring winding lever (24) with one end of spring,
in clockwise direction until end of spring is past
shift fork actuating lever; then push in on assem­
bly until positioned as shown in figure 24.
8. Dip above assembly in lubricant. With drive
nut on drive screw assembly in center of screw,
and fiber contact bumper down toward switch,
position the slots of winding lever over the drive
nut. Install the shaft (21) through center of assem ­
bly into depression in housing.
9. Install new gasket (25) on housing. Install
cover (26) with spring detent against drive nut.
Retain cover with screws and lock washers (28).
10. Remove oil plug (27). With unit standing
with motor up, lubricate in accordance with in-
Figure 2 7 — Removing Torsion Spring (Rockwell)
structions given in LU B R IC A T IO N (SEC. 0). Re­
install plug and tighten firmly.
ASSEMBLY OPERATIONS
(ROCKWELL AXLES)
Key numbers in text refer to figure 25.
1. Install automatic switch, assembly (17) into
housing. Use flat head screw (18) to attach switch
to housing. On outside of housing, install two bush­
ings (11), fiber washers (10), and jam nuts (9) over
switch terminal screws. Tighten nuts firmly.
2. Install motor assembly grommet (7), then
install gasket (5) on housing. Install motor (6) and
cover (4) into housing. Install three screws and
lock washers (1) and two stop nuts (2). Install
motor cover cable clip (3) under outer screw.
Tighten screws and nuts firmly.
3. Attach motor wires to switch terminals.
The red or longer wire attaches to bottom term­
Figure 26— Removing Torsion Spring (Rockwell) Figure 28— Assembling Torsion Spring and Levers (Eaton)
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK S H O P M A N U A L