Chevrolet 10 Series 1970, Service Manual

Page: 177 / 671

SECTION 4
REAR SUSPENSION AND DRIVE LINE
CONTENTS OF
Page
Rear Suspension .................................................................................. ..... 4-1
Single A x l e ......................................................................................... ..... 4-1
Tandem ............................................................................................. ..... 4-8
Drive L i n e ............................................................................................. ..... 4-14
Rear A x le (C h ev ro let) ..................................................................... ..... 4-14
Single Speed .................................................................................. ..... 4-14
T w o Speed .................................................................................... ..... 4-32
THIS SECTION
Page
Rear A x le (E a to n ) ........................................................................... ..... 4-40
Single Speed .................................................................................. ..... 4-40
T w o Speed .................................................................................... ..... 4-44
Tandem and P o w e r Divider ( E a t o n ) .................................................... 4-50
Propeller Shafts, Universal Joints and
Bearing S u p p o r t ................................. ........................................... . 4-55
REAR SUSPENSION
(SINGLE AXLE)
IN D E X
Page
C om ponent Parts R e p la c e m e n t.......................................................... ........ 4-1
Shock A bsorber Replacem ent ................................................................ 4-1
T ie Rod (Series C-P10 and C 2 0 ) ..................................................... ........ 4-1
Stabilizer Shaft (Series P 3 0 ) ............................................................ ........ 4-2
C ontrol A rm (Series C-P10 and C 2 0 ) ............................................ ........ 4-2
C oil Spring and A u xilia ry L e a f Spring
(Series C - P 1 0 and C 2 0 ) ........................................................................... 4-4
L e a f Springs ......................................................................................... ........4-4
Shackle Replacem ent ......................................................................... ........4-5
Series P20 and C-P30 ..................................................................... ........4-5
Page
Series K 10 and K 2 0 ......................................................................... .......
4.5
Bushing Replacem ent ......................................................................... .......
4-5
Series P20 and C - P 3 0 ....................................................................... .......
4-5
Series K 10 and 20 ......................................................................... ....... 4-5
Series 40, 50 and 6 0 ......................................................................... .......
4-5
Spring Replacem ent ................................................................................... 4-6
Series P20 and C - P 3 0 ....................................................................... ....... 4-6
Series
K 10
and K 2 0 ......................................................................... ........4-6
Series 40, 50 and 6 0 ......................................................................... ........4-6
Spring L e a f Replacem ent .................................................................. ........4-7
COMPONENT PARTS REPLACEMENT
Shock Absorber
Replacement
1. R aise veh icle on hoist.
2. If equipped with a ir lift shock absorber bleed a ir out
o f lines. D isconnect line from shock absorber.
3. R em ove shock a bsorber pivot bolt nuts and washers;
pull bolts and rem ove fro m veh icle.
4. P o sitio n eye at la rg e end o f shock absorber in fram e
bracket o r cro ssm em b er install bolt, washer and
nut. If equipped with a ir lift shocks, install shock
ab sorb er with the a ir fittin g pointed rearw ard.
5. A lig n opposite end o f shock absorber with anchor
bracket at axle, install bolt, w asher and nut.
6. Tighten nuts to specification s.
7. If equipped with a ir lift shock ab sorb ers, inflate to
10-15 lbs. minimum a ir p ressu re.
8. L o w e r veh icle and rem ove fro m hoist.
Tie Rod (Series C -P 10 and C 20 )
Removal
1. R aise veh icle on hoist.
2. Rem ove nuts and bolts from each end o f rod and r e ­
move rod fro m veh icle.
Installation
NOTE: A ll tie rod attachments a re im portant
attaching parts in that they could a ffect the p e r ­
form ance o f vita l components and s y s t e m s ,
and/or could resu lt in m ajor re p a ir expense.
They must be replaced with parts o f the same
part numbers o r with equivalent parts i f r e ­
placem ent b ecom es n ecessary. Do not use r e ­
placem ent p arts o f le s s e r quality o r substitute
design. Torque values must be used as sp ecified
during rea ssem b ly to assure p ro p er retention of
these parts.
1. Check rod fo r deform ation by sighting down its length
o r by using straight edge. M inor defects may be r e ­
moved by bending. A badly rod, how ever, should be
replaced.
2. Bushings should be replaced i f any abnorm al condi­
tions exists, such as looseness, damage to o r s w e ll­
ing o f rubber parts o r general wear.
3. L o w er veh icle and rem ove from hoist.
Bushing
Replacement
1. Position end o f rod on a suitable tube-type support as
shown in Figu re 1.
2. P r e s s bushing fro m rod, using T o o l J-7079-2.
3. P osition new bushing o v e r rod eye.
4. Using T o o l J-8518 on S e rie s C -P10 o r T o o l J-7574-6
on S eries C20, place tool on bushing and p re s s bush­
ing into rod eye until tool contacts rod.
CHEVROLET TRUCK SERVICE MANUAL