Chevrolet 30 Series 1967 Service Manual page 171

SPRINGS
Spring Bushing Replacement
1. Raise vehicle frame to remove load from spring.
Support frame securely.
2. Remove forward rear wheels and tires.
3. At both springs, remove lubrication fitting from
spring eye pin, remove nut and washer from lock
bolt and tap bolt out of hanger, then drive pin out of
spring and hanger. Jack rear axle if necessary, to
lower front axle so pin will clear brake flange plate.
4. Raise rear axle to bring front spring eye out of
hanger just far enough to clear hanger.
NOTE:
On some vehicles it may be necessary
to loosen forward torque nuts and loosen studs in
axle brackets. (See "Torque Rod Removal" in
this section.)
5. Remove old bushing and install new bushing using
Tool J-8459 as follows (See Figure 33).
a. Install J-8 4 5 9 -4 on J - 8459-1, lubricate threads
and insert tool
J-8 4 5 9 -3 , -2 , bearing, washer and nut J-8459-6 in
that order. Use breaker bar to start bushing,
then use impact wrench to draw bushing out of
spring eye.
33 -
Fig . Removing and Installing Spring Eye Bushing
with Tool J-8459
COMPONENT PARTS REPLACEMENT
through the bushing. Install
REAR SUSPENSION AND DRIVE LINE 4-13
b. Remove old bushing from tool and position new
bushing on tools J-8 4 5 9 -4 and -1. Insert tool
through spring eye and install J-8 4 5 9 -2, bearing
washer and nut J-8459-6 in that order.
nut to start bushing straight in spring eye, then
use impact wrench to draw bushing into spring
until bushing stops against J-8 4 5 9 -2. Remove
tool.
. Check pin for slip fit in bushing and ream if neces­
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sary, using a standard 1.250" reamer.
7. Repeat steps 4, 5, and
. At both springs, align spring eye in hanger, install
8
pin so slot in pin lines up with lock bolt holes in
hanger and install lock bolt so wedge mates with slot
in pin. Install lock bolt washer and nut.
9. Install wheels and tires.
and, with vehicle at curb weight, tighten torque rod
nuts to 300 ft. lbs.
Removal of Spring
Refer to Figure 34.
1. Remove rebound bolt and spacer from bottom of
spring rear hanger.
2. Raise vehicle frame to remove load from spring.
Support frame securely.
3. Remove nut and washer from spring eye pin lock bolt
at inside of front hanger and tap out bolt.
lubrication fitting from inner end of pin, then drive
pin out from inner side of hanger, using a brass drift
and hammer.
4. Remove four bolts attaching spring saddle top pad to
spring saddle; hold nuts at bottom while turning bolts
at top.
5. Loosen lock nuts on top pad set screws, then loosen
set screws. Lift top pad and locating slide from top
of spring.
. Lift spring assembly up and rearward to remove
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from spring saddle.
Disassembly of Spring
Clamp spring leaves firmly together, using one "C"
clamp on each side of center bolt, or use an arbor press.
Remove rebound clip bolts and spacers, then remove
spring center bolt. Release "C" clamps or arbor press
slowly to avoid possible injury.
Cleaning and Inspection
1. Clean all rust and dirt from spring leaves, using a
wire brush if necessary. Make sure machined sur­
faces of spring saddle are clean.
2. Inspect each spring leaf for cracks or breaks and
replace any that are damaged.
3. Thoroughly clean spring eye pin, making sure lubri­
cant passages are open. Replace pin if excessive
wear is evident.
4. Inspect spring eye bushing for wear. If excessive
wear is evident, replace bushing using Tool J-8459
(See Figure 33).
5. Replace rebound clip bolts or center bolt if damaged
in any way.
Tighten
at opposite spring.
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Lower vehicle to ground
Remove
CHEVROLET TRUCK SERVICE M ANUAL