Chevrolet 1977 light duty truck, Service Manual

Page: 300 / 861

7. Remove bolts securing crossm em ber to fram e
bottom rail an d lower the assembly from vehicle.
Installation
CAUTION: See C A U T IO N on page I o f this
section regarding the fa sten ers referred to in
steps I, 2, 4, 5,
6
a n d
7.
1. Jack crossm em ber into position under fram e
and install fram e bottom rail m ounting bolts.
2. Install bolts securing crossm em ber h a n g e r to
f ra m e and torque nuts. See specifications.
3. Position engine on fro n t m ount and install
m o u n tin g bolt and torque (see Section 6).
4. Install the shock absorber.
5. Install b ra k e su p p o rt struts if previously
removed.
6. Connect front brake m ain feeder line and bleed
brakes as described in Section 5.
7. Install idler arm and p itm a n arm (see Section
9).
8. Check and Adjust front end alignm ent as
outlined u nder “ M ain ten an ce and A djustm ents” in this
section.
9. Lower the vehicle to the floor.
FRONT SUSPENSION, FOUR-WHEEL DRIVE
SERIES K10, K20, K30
IN D E X
G e n e ra l D escrip tio n ........................................................ 3C- 2 4
M ain te n a n c e and A d ju s tm e n ts .................................. 3C- 27
Ball Joint A d j u s tm e n t ............................................... 3C- 27
Bearing L ubric a tio n .................................................... 3C- 28
W heel Bearing A d j u s t m e n t ..................................... 3C- 2 8
C o m p o n e n t Replacem ent- ........................................... 3C- 2 9
Hubs, F ree-W heeling (K id. K 2 0 ) ......................... 3C- 2 9
Hubs, Locked (KIO. K20, K.30)............................ 3C- 3 0
S p i n d l e ............................................................................ .3 C - 3 0
Steering Knuckle (KIO, K 2 0 ) ................................ .3 C - 3 1
Steering Knuckle (K 3 0 )............................................ 3 C - 3 3
Shock A b s o r b e r ........................................................... 3 C - 3 6
Stabilizer B a r ............................................................... 3 C - 3 6
L e a f S p r i n g .................................................................. 3C- 3 7
Specifications..................................................................... 3 C - 3 8
Special T o o l s .................................................................... 3 C - 3 9
GENERAL DESCRIPTION
F ront drive axles used on KIO, K20, and K30 trucks
have several styles o f wheel-end construction.
At the wheel ends o f the axle tubes, two types of
steering knuckle attachm ent are used. Figures 3C-1K and
3C-2K show the KIO and K20 knuckle attached with ball
joints. Figure 3C-3K shows the king-pin attachm ent used
in K30. The tapered up p e r king pin fits in a tapered
nylon bushing. The lower king p in is part o f the bearing
cap, and this king p in rides in a tapered roller bearing.
All trucks with full-time four-wheel drive use a
locked hub. as shown in Figure 3C-1K (for KIO, K20),
and in Figure 3C-3K (for K30). A free-wheeling hub is
used on trucks equipped with part-tim e four-wheel drive.
The free-wheeling hub (for KIO, K20) is shown in Figure
3C-2K. This hub allows the driver to manually engage or
disengage the hub from the axle shafts.