Chevrolet 1980 Light Duty Truck Service Manual page 290

3C-24 FRONT SUSPENSION
Front drive axles used on K10, K20, and K30 trucks
have several styles of wheel-end construction.
At the wheel ends of the axle tubes, two types of
steering knuckle attachment are used. Figures 3C-1K show
the K10 and K20 knuckle attached with ball joints. Figure
3C-2K shows the king-pin attachment used in K30. The
tapered upper king pin fits in a tapered nylon bushing. The
R ETA IN IN G PLATE
" 0 " RING
ACTUATOR KNOB
R ETA IN IN G PLATE BOLT
AXLE SHAFT SNAP RING
A CTUATING CAM BODY
IN TER N A L SNAP RING
OUTER CLUTCH R ETAINING RING
AXLE SH A FTSLEE VE AND
CLUTCH RING
10 INNER CLUTCH RING
.
11
SPRING
.
LOCK NUT
12.
13. LOCK-ADJ. NUT
14. PIN-ADJ. NUT
GENERAL DESCRIPTION
15. ADJUSTING NUT
PRESSURE PLATE
16.
17. OUTER-W HEEL BEARING
INNER-W HEEL BEARING
18.
19. SPINDLE
20
. SPINDLE BEARING
21
. SEAL
22
. H UB-AND-DISC ASM
23. OIL SEAL
24. SPACER
25. DUST SEAL
Fig. 3 C -1K --K 1 0 , K 2 0 w ith F ree-W heeling Hub and Ball Joints
lower king pin is part of the bearing cap, and this king pin
rides in a tapered roller bearing.
A free-wheeling hub is used on all four wheel drive
trucks. The free-wheeling hub (for K10, K20 and K30) is
shown in Figure 3C-4K. This hub allows the driver to
manually engage or disengage the hub from the axle shafts.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
DEFLECTOR
AXLE OUTER SHAFT
KNUCKLE
ADJUSTING SLEEVE
UPPER BALL JO IN T
YOKE
LOWER BALL JO INT
R ETA IN IN G RING
CALIPER SUPPORT BRKT.
SPINDLE R ETAINING NUT
SPINDLE R ETAINING BOLT
L IG H T T R U C K S ER V IC E M ANUAL