Front A Xle D Ifferential - Chevrolet 1980 Light Duty Truck Repair Manual

FRONT AXLE DIFFERENTIAL
Front A xle D ifferential...........................................................4C-1
General Inform ation............................................................. 4C-1
Differential C a se .................................................................. ..4C-1
R em oval................................................................................. ..4C-1
Oil Seal R eplacem ent....................................................... ..4C-2
D isassem bly............................................................................4C-2
D rive P in ion ........................................................................... ..4C-2
R em oval................................................................................. ..4C-2
In sp ectio n ................................................................................4C -2
Differential C a s e .....................................................................4C -2
R eassem bly........................................................................... ..4C-2
K 10-20 M odels use a Chevrolet or a D ana (44 Series)
style front axle, which incorporates an 8-1/2" ring gear. The
K -30 axle is a D ana (60 series) which incorporates a 9-3/4"
ring gear.
The following procedures pertain to D ana model axles
only. Procedures for the Chevrolet 8-1/2" model are the
same as covered previously in Section 4B o f this manual.
FR O N T AXLE D IFFE R E N TIA L
D iffe re n tia l Case (D ana-M odels)
Rem oval (On V eh icle ) Fig. 4C-1
1. Raise the vehicle on a hoist. (Twin Post H oist under
axle).
2. Place jack stands under right hand and left hand
frame rails.
3. D isconnect the right shock absorber at the axle.
4. R em ove the U -bolt nuts.
5. D isconnect the tie rod at the right hand knuckle.
6. Place a jack stand under the right steering knuckle.
7. Lower the axle on stand, remove U-bolts and move
spring aside.
NOTICE:
Care should be taken so as not to stretch
and damage the brake hose.
8. Turn stabilizer bar to spring plate attaching plate
bolt and rotate the spring plate to provide clearance for the
spreader tool, J-24385.
SECTION 4C
(4-WHEEL DRIVE)
CONTENTS
GENERAL IN FO R M A TIO N
FRONT WHEEL DRIVE
D rive P in ion .............................................................................. 4C-5
Installation and A djustm ent............................................ 4C-5
D ifferential C a se ..................................................................... 4C -7
Preload and A djustm ent.................................................... 4C-7
Installation............................................................................... 4C-7
Gear Tooth Contact Pattern C h e c k ............................... 4C-7
Gear Tooth N o m en cla tu re............................................... 4C -8
T e s t.......................................................................................... 4C -8
A d ju stm en ts........................................................................... 4C-8
Special T o o ls ............................................................................. 4C-9
If front axle assembly is removed from vehicle, mount
assembly in suitable holding fixture.
9. Rem ove axle shafts as outlined in A xle Shaft
Rem oval, Truck Service Manual.
F ig . 4 C - 1 ~ R e m o v in g D if f e r e n t i a l C a s e O n V e h ic le
4C-1
O V E R H A U L M A N U A L