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F.g. 2 5 - 1 0 - 3 0 Series Power S teering G e a r (T y p ic a l)
6.
Tighten the se c to r lash adjusting sc re w until torque
at
steerin g
wheel
nut fa lls
NOTE:
If maximum sp ecifica tion is exceeded,
turn lash adjuster s c re w cou n ter-clock w ise, then
com e up on adjustment by turning adjuster in a
clock w ise direction .
7. Tighten locknut and recheck pull as it must lie within
s p ecification s.
8. R eassem b le steerin g connecting rod to pitman arm .
NOTE:
The
connecting
fasten er is an im portant attaching part in that it
could a ffect the p erform a n ce of v ita l components
and system s, and/or could resu lt in m a jor r e
p a ir expense.
It must be rep laced with one of
the sam e part number o r with an equivalent part
i f rep lacem en t becom es n ecessary.
rep lacem en t part of le s s e r quality o r substitute
design.
Torqu e values must be used as s p eci
fie d during rea ssem b ly to assure p ro p er reten
tion of this part.
9. Connect b a ttery ground w ire and re in s ta ll horn button
cap.
BLEEDING HYDRAULIC SYSTEM
1.
F ill o il r e s e r v o ir to p ro p er le v e l and le t o il rem ain
undisturbed fo r at le a s t two minutes.
2. Start engine and run only fo r
3. Add o il if necessary.
4. Repeat above procedu re until o il le v e l rem ains con
stant a fte r running engine.
5. R a ise front end of v e h icle so that wheels are o ff the
ground.
6. In crea se
engine speed to approxim ately 1500 rpm.
7. Turn the wheels (o ff ground) righ t and le ft, ligh tly
contacting the wheel stops.
8. Add o il if n ecessary.
9.
L o w e r the veh icle and turn wheels right and le ft on
the ground.
10. Check o il le v e l and r e f ill as required.
11. If o il is e x tre m e ly foam y, a llow veh icle to stand a
within sp ecification s.
rod
to
pitman
arm
Do not use a
about two seconds.
F ig . 2 6 - 4 0 - 6 0 Series Power S teering G e a r and C o n tro l
V a lv e (T y p ic a l)
fe w
m in u tes
w ith
en gin e
procedu re.
a. Check b elt tightness and check fo r a bent o r loose
pulley.
(P u lle y
should
running.)
b. Check to make sure hoses are not touching any
other parts o f the truck, p a rticu la rly sheet m etal.
c. Check o il le v e l, fillin g to p rop er le v e l if n eces
sa ry ,
follow in g operations
step and Step " D "
low o il le v e l and/or a ir in the o il a re the m ost
frequent causes of objectional pump noise.
d. Check the p resen ce of a ir in the o il.
show
up
as
a m ilky appearing o il.
p resent, attem pt to bleed system as d escrib ed in
operations
1 through 10.
that the pump w ill not bleed a fte r a few tria ls ,
pro ceed
as
outlined
Checks.
FLUID LEVEL
1. Check o il le v e l in the r e s e r v o ir by checking the dip
stick
when
o il
is
at
m odels equipped with rem ote r e s e r v o ir , the o il le v e l
should be m aintained approxim ately 1/2 to 1 inch
fro m top with w heels in fu ll le ft turn position, unless
a side mounted pow er cylin d er is used.
m odels, check with w heels in fu ll right turn position.
2. F ill,
if n ecessa ry , to p ro p er le v e l with GM P o w e r
Steering Fluid o r equivalent.
autom atic tran sm ission fluid bearin g the m ark Dex-
r o n ® m ay be used.
PUMP BELT TENSION
1.
Loosen nut on pivot bolt and pump b ra ce adjusting
nut.
CAUTIO N:
Do not m ove pump by p ryin g against
r e s e r v o ir o r by pulling on f i l l e r neck.
2. M ove pump, with belt in p lace until b elt is tensioned
to sp ecification s as indicated by T o o l J-7316 (fig. 27).
3. Tighten pump brace adjusting nut.
bolt nut.
STEERING 9-17
o ff
and
r e p e a t
ab ove
not wobble with engine
1 through 10.
This
a re ex trem ely im portant as
A ir w ill
If a ir is
If it becom es obvious
under
H ydraulic
System
operating tem peratu re.
On
On these
If this is not available,
Then tighten pivot
CHEVROLET TRUCK SERVICE MANUAL
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