Chevrolet 10 Series 1970 Service Manual page 509

General D e s c r ip t io n ......................................................
Maintenance and Adjustm ents.........................................
L u b ric a tio n ...................................................................
Adjustments ................................................................ . .
Steering G e a r ............................................................ . .
Steering Gear High Point Centering -
C-P10-20-30 .......................................................... . .
Steering Gear High Point Centering - all except
C-P10-20-30 .........................................................
Steering Wheel A lig n m e n t ...................................... . .
Mast Jacket Low er Bearing Adjustm ent................ . .
Shifter Tube A d ju stm en t.........................................
Component Replacement and Repairs
Steering W h e e l ............................................................. . .
Mast Jacket Upper Bearing
Steering C oupling.......................................................... . .
Th e steerin g gear used on a ll truck m odels is of the
re c irc u la tin g ball type and the s e r v ic e procedu res are
b a s ic a lly the sam e fo r all units.
T w o types of steerin g linkages are used.
s e r ie s units have an adjustable tie rod connected to the
s te e rin g arm at each wheel.
The steerin g g e a r is fa c to r y - fille d with steering g ea r
lubricant. Seasonal change of this lubricant should not
be p erfo rm e d and the housing should not be drained - no
lu brication is requ ired fo r the life of the steerin g g e a Z
E v e ry 3H.UOO m iles, the g e a r should be inspected fo r
s e a l leakage (actual solid g re a s e - not just o ily film ).
a s e a l is rep laced o r the g e a r is overhauled, the g ea r
housing should be r e fille d with #1051052 (13 o z. container)
S teerin g G ear Lubricant which m eets GM Specification
G M 4673M, o r its equivalent.
NOTE:
Do not use E P C hassis
m eets GM Specification GM 6031M, to lubricate
the gear. DO N O T O V E R - F IL L the gear hous-
ing.
SECTION 9
STEERING
CONTENTS OF THIS SECTION
Standard S t e e r in g ...................................................................
Power S t e e r in g ......................................................................
Special T o o l s .........................................................................
STANDARD STEERING
Page
. . 9-1
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. .
. .
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GENERAL DESCRIPTION
C -P 10-20-30
Steering e ffo rt is trans-
MAINTENANCE AND ADJUSTMENTS
Lube, which
INDEX
F lexible T y p e .........................................................
9-1
Universal Joint T y p e ............................................. . . .
9-1
Intermediate Steering Shaft Models with
9-1 Splined Slip J oin t................................................
9-1
Steering Shaft Intermediate C o u p lin g ................
Steering G e a r .............................................................
9-2 Pitman Shaft Oil Seal Replacement
Steering Column - Except T ilt Cab Models
9-3
Steering Column - T ilt Cab M o d e l s ......................
9-3
Steering L i n k a g e .........................................................
9-4 T ie R o d ...................................................................... . . .
9-4
Relay Rod - C - P I 0-20-30
9-4 Idler A rm - C-P10-20-30
9-4 Pitman Arm .............................................................
9-5
9-5 Steering A r m s ..........................................................
m itted to the tie rods through a rela y rod connected to the
pitm an arm on the le ft and an id le r arm on the right.
oth er m odels use a single adjustable tie rod, connecting
the le ft and right steerin g arm s.
la yed to the le ft steerin g arm , from the pitman arm , by a
non-adjustable connecting rod.
B e to r® " V adjustments a re made to the steerin g gea r
, I n an attem P' t0 c o r r e c t such " " ditions as slummy,
l00se o r hard stee rin S and road shocks' a carefu l ? eCk
If should be made o f fron t end alignment, shock a bsorb ers,
wh« e 1 balan' e and t i r f P res su re fo r p ossible cause,
, C ° r r e c t adjustment of steerin g gea r is v e r y important.
^ ,h ,ile th ere a r f
fo llo w in g p rocedu re must be follow ed step-by-step in the
o r d e r given.
1. On 10, 20 and 30 s e r ie s trucks, rem ove pitman arm
nut and m ark rela tio n of pitman arm position to
s ecto r shaft.
o r J-5504 (fig.
Page
9-1
9-16
9-21
.........................
. . . . . . .
...................................... . . .
......................................
Steering e ffo rt is r e ­
Steering G ear
_ „
but two adjustments to be made, he
Rem ove pitman arm . Use T o o l J-6632
1) fo r 10, 20 and 30 S eries and
CHEVROLET TRUCK SERVICE MANUAL
Page
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9-6
9-7
9-7
9-8
. . . 9-8
9-9
. . . 9-13
. . . 9-13
9-14
9-15
A ll
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