Chevrolet Light Duty Truck 1973 Service Manual page 215

NOTE: Spring is an interference fit. When
spring is seated, spring extends past the
spindle nuts by approximately 7/8" .
3. Place inner clutch ring and bushing assembly into
axle shaft sleeve and clutch ring assembly and
install as an assembly onto the axle shaft. Press in
on assembly and install axle shaft snap ring.
NOTE: Install 7/16 x 20 bolt in axle shaft
end and pull outward on axle shaft to aid in
installing snap rings.
4. Install actuating cam body (cams facing outward),
outer clutch retaining ring and internal snap ring.
5. Install "O" ring on retaining plate and install
actuating knob and retaining plate.
NOTE: Install actuating knob with knob in
"LOCK" position—grooves in knob must fit
into actuator cam body.
. Install six cover bolts and seals.
6
7. Turn knob to "FREE" position to check for proper
operation.
. Lower vehicle to floor.
8
FREE-WHEELING HUB
K20 Series (Fig. 54)
Removal
1. Place vehicle on hoist and raise hoist.
2. Turn hub key knob to the "FREE" position.
3. Remove alien head bolts securing the retainer cap
assembly to the wheel hub.
4. Pull off the hub cap assembly and gasket; also
remove exterior sleeve extension housing and
gasket.
Disassembly o f Locking Hub Cap Assembly.
a. Turn hub key knob to locked position.
b. Drive out key knob retainer roll pin.
c. Remove outer clutch gear assembly.
d. Remove lock ring and remove slotted adjust­
ment sleeve.
e. Remove spring.
f. Remove lock ring securing the plastic key knob
to the hub retainer cap.
g. Remove "O " ring from the plastic hub key
knob.
5. Remove snap ring from end of axle shaft.
. Pull internal clutch gear and collar.
6
Inspection
1. Discard all seals, gaskets and "O" rings.
2. Wash all parts in solvent and air dry.
F R ON T S U S PEN SIO N
3. Inspect all parts for wear, cracks for broken teeth
and replace as necessary.
4. Replace all seals gaskets and "O" rings.
Installation
1. Install internal clutch gear collar and gear.
2. Install lock ring at end of axle shaft.
3.
Assembly of Locking Hub Cap Assembly.
a. Use "O" ring lube and install the new "O " ring
in the groove of the plastic hub key knob and
insert into retainer cap.
b. Install the lock ring securing the plastic key
knob to the hub retainer cap.
NOTE: Check to see that lock ring is fully
engaged into slot by pushing outward on the
plastic knob.
c. Install the slotted adjustment sleeve with the two
tabs facing downward.
d. Install the key knob retaining roll pin with knob
in "LOCKED" position.
e. Install spring.
f. Place outer clutch gear assembly on top of
spring, compress spring and install lock ring at
sleeve end.
g. Turn key knob to "FREE" position.
NOTE: Before continuing to install the
extension housing and the assembled cap
assembly, remove the head from a 3 /8" bolt
5 inches long and use to align the assembly
of parts to the hub.
4. Install above noted bolt alignment tool into one of
the hub housing bolt holes.
5. Install the new exterior sleeve extension housing
gasket and housing and the new hub retainer cap
assembly gasket and cap assembly.
. Install alien head bolts securing the retainer cap
6
assembly to the wheel hub. Torque to specifications.
7. Turn hub key knob to the locked position to assure
engagement into position.
. Install wheel and tire assembly and lower vehicle to
8
floor.
FRONT AXLE ASSEMBLY (Refer to Fig. 55)
Removal
1. Disconnect propeller shaft from front axle
differential.
2. Raise front of vehicle on hoist until weight is
removed from front springs. Support truck with
jack stands behind front springs.
3. Disconnect connecting rod from steering arm.
4. Disconnect brake hoses from frame fittings and cap
3-41
LIGHT DUTY TRUCK SERVICE MANUAL