Chevrolet 10 Series 1970 Service Manual page 523

NOTE: B efo re locking clamp bolts on the rods,
m ake sure that the tie rod ends are in alignment
with th eir ball studs
cen ter of its tr a v e l).
alignm ent with the studs, binding w ill result.
A ls o , the s lit in the tie rod must be in alignm ent
with the slot in the clam p and, on C -P 10-20-30
s e r ie s , facing forw ard .
Relay R o d -C -P l 0 -2 0 -3 0
Removal
1. P la c e veh icle on hoist.
2. R em ove inner ends of tie
describ ed under T ie Rod - R em oval.
3. R em ove co tter pin and nut fro m re la y rod ba ll and
attachment at pitman arm .
4. Detach re la y rod fro m pitm an arm .
linkage as requ ired to fr e e pitm an arm fro m re la y
rod.
5. R em ove cotter pin and nut fro m id le r arm and r e ­
m ove re la y rod fro m id le r arm .
Installation
1. In stall re la y rod to id le r arm , making certain id le r
stud seal is in place, then in sta ll and tighten nut to
sp ecification s. Advance
castellation with cotter pin hole and in stall pin.
2. R aise end o f rod and install on pitman arm .
with nut and co tter pin.
3. Install tie rod ends to r e la y rod as p reviou sly de­
scrib ed under T ie Rods.
4. R em ove v eh icle from hoist.
5. Adjust to e -in (see Section 3) and align steerin g wheel
as d escrib ed p revio u sly in this section under S teer-
W h eel Alignm ent and High Point C entering.
Idler A rm —C -P l0 -2 0 -3 0
Removal
1. P la c e veh icle on hoist.
2. R em ove cotter pin and nut fro m end of id le r arm and
rem o ve re la y rod fro m id le r arm .
3. R em ove id le r arm fro m fra m e.
Installation
1. P o s itio n id le r arm on fra m e
bolts (with sp ecial
tighten nuts to specification s.
2. In stall re la y rod to id le r arm , making certain seal
is on stud, and in stall and tighten nut to s p ecifica ­
tions.
3. In stall co tter pin and secu re.
4. R em ove v e h icle fro m hoist.
Pitman Arm
Removal
1. P la c e veh icle on hoist.
2. R em ove co tter pin fro m pitman arm ball stud and
rem o ve nut.
3. Rem ove pitman arm o r re la y rod from b all stud by
tapping on side o f rod o r
mounts) with a ham m er while using a heavy ham m er
o r s im ila r tool as a backing (fig. 23).
to rem o ve fro m stud.
4. R em ove pitman arm nut fro m s e ctor shaft o r clamp
b olt fro m pitman arm , and m ark relation of arm
p osition to shaft.
(each ball joint is in the
If the tie rod is not in
rods fro m re la y rod as
Shift steerin g
nut just enough to align
Secure
Lubricate tie rod ends.
and in stall mounting
plain washers under heads);
arm (in which the stud
P u ll on linkage
5. Rem ove pitman arm , using T o o l J-6632 o r J-5504
fo r 10-20-30 S e ries, and J-21143 fo r 40-50-60 S eries.
Installation
1. In sta ll pitman arm on pitman shaft, lining up the
m arks made upon rem oval.
NOTE: If a clam p type pitman arm is used,
spread the pitman arm
wedge, to slip arm on to pitman shaft.
spread pitman arm m ore than requ ired to slip
o v e r pitm an shaft with hand pressu re.
ham m er o r damage to steerin g gear m ay result.
2. Make sure that threads on ball studs and in b all stud
nuts are clean and smooth.
stud seals; rep la ce if necessary.
NOTE: If threads a re
b all studs m ay turn in sockets when attempting
to tighten nut.
3. Install pitm an shaft nut o r pitm an arm clamp b olt and
torque to sp ecification s.
4. P o sitio n b all stud on to pitman arm o r re la y rod.
In stall nut and torque to specification s.
tighten nut enough to align castellation with hole in
stud and in stall co tter pin.
5. L u b ricate ball studs.
6. R em ove veh icle fro m hoist.
Steering Connecting Rod
Removal
1. R em ove co tter pins fro m ball studs and rem o ve cas­
tella ted nuts.
2. R em ove b a ll studs fro m
arm by backing up steerin g arm boss and/or pitman
arm boss with a heavy ham m er and strik in g other
side of boss with lig h te r ham m er (fig. 23).
Installation
1. Make sure that threads on ball studs and in b all stud
nuts are clean and smooth.
stud seals - rep lace if necessary.
NOTE: If threads a re not clean and smooth,
ball studs m ay turn in connecting rod when at­
tem pting to tighten nut.
2. In stall b all studs in steerin g arm and pitman arm .
3. In stall b all stud nuts and torque to sp ecification s.
Continue to tighten nuts enough to align castellation s
with holes in studs.
4. In stall cotter pins and lubricate.
Steering Arms
If, through co llisio n o r other damage, it becom es nec­
e s s a r y to rem o ve and rep lace either steerin g arm , p ro ­
ceed as fo llo w s:
Removal
1. P la c e veh icle on hoist.
2. R em ove tie rod and, on m odels so equipped, steerin g
connecting rod, fro m
this section.
3. R em ove fron t wheel, hub and brake drum as a unit by
rem oving hub cap and dust cap, cotter pin fro m spin­
dle nut and the spindle nut.
outside of veh icle. If rem ova l is d ifficu lt, it may be
n ecessary to back o ff brake adjustment to in crease
STEERING 9-15
just enough, with a
Do not
Do not
Check condition o f ball
not clean and smooth,
Continue to
steerin g arm and pitman
Check condition o f ball
steerin g arm as outlined in
P u ll assem bly toward
CHEVROLET TRUCK SERVICE MANUAL