Chevrolet 70 Series 1970, Service Manual

Page: 241 / 841

REAR SUSPENSION 4-28
Figure S —Replacing Rubber Type Eye Bushing
drop below b ra ck et, then using bushing re m o v e r
and in s ta lle r (J-8459) rep lace sp rin g eye bushing
a s follows:
a. P la c e la rg e O.D. of guide (J-8459-4) o ver
th read ed end of shaft ( J - 845 9-1), then lu b ricate
th re a d s of shaft and in s e rt th readed end of shaft
through ra d iu s leaf bushing from inner side.
b. In stall sleev e (J-8459-5), stop (J-8459-2),
b earing, w asher, and nut (J-8 4 5 9 -6), over th read ed
end of shaft. Hold shaft from turning and u se a
socket w rench with a long handle to tu rn nut and
d raw the ra d iu s leaf bushing out.
c. D isassem b le tool assem bly (J-8459).
INSTALLATION (Fig. 7)
1. In stall new rad iu s leaf bushing using special
tool assem bly (J-8459) a s follows:
STA R T IN G R E M O V A L W ITH SO C K ET H A N D LE
Figure 6—Removing Spring Eye Bushing
a. A ssem ble la rg e O.D. of guide (J-8459-4)
ov er th readed end of shaft (J -8 4 5 9 -1); then lu b ri­
cate ra d iu s leaf sp rin g eye, bushing, and shaft
th re a d s.
b. In sta ll bushing over shaft and in s e rt th re a d ­
ed end of shaft through inner sid e of ra d iu s leaf
sp rin g e y e .In s ta ll stop (J-8459-2), b earin g , w asher,
and nut (J-8459-6) o ver th rea d ed end of shaft.
c. While holding shaft to p re v en t turning,
tighten nut (J-8459-6) to draw bushing into the
ra d iu s leaf sp rin g eye until bushing con tacts stop
(J-8459-2).
d. Check ra d iu s leaf pin fo r slip fit in bushing
and re a m bushing as n e c e ssa ry .
2. With fram e ra is e d so hooked sp rin g leaf
ju st contacts rebound pin, u se a heavy duty C-
clam p to draw ra d iu s leaf sp rin g eye into alig n­
m ent with hole in b ra c k e t. In stall the ra d iu s leaf
pin with hole fo r lu b rica tio n fitting facing out.
Index notch on end of ra d iu s leaf pin with clam p
bolt holes in spring b ra ck et.
3. In stall clam p b olts, nuts, and lock w a sh e rs,
then in stall lu b rica tio n fitting in pin and lu b rica te
with lu b rican t sp ecified in LUBRICATION (SEC. 0)
in th is m anual.
4. Remove C -clam p and low er fra m e to place
weight on sp rin g s.
AUXILIARY SPRINGS
Some vehicles have au xiliary r e a r sp rin g s
which a r e n e c e ssa ry fo r c e rta in types of operation.
When used, the au x iliary sprin g leaves a r e in s ta ll­
ed above the re g u la r r e a r sp rin g assem b ly a n d a re
held in p lace by long U -bolts which se c u re m ain
sp rin g and h elp er to axle. B ra c k e ts a r e in stalle d
on fra m e and a r e contacted by the au x iliary spring
to pro vid e added stab ility re q u ire d fo r unusual
conditions. An a i r gap between h elp er sp rin g and
CHEVROLET SERIES 70-90 HEAVY DUTY TRUCKSHOP MANUAL