Chevrolet 30 Series 1967 Service Manual page 206

REAR SUSPENSION AND DRIVE LINE 4-48
Service operations on the axle may be performed with­
out removing the complete axle assembly from the vehi­
cle. There may be occasions, however, when it will be
necessary to remove the complete assembly as a result
of collision or other damage resulting in distortion of the
axle housing. The following axle assembly removal, is
to be used only when replacement of axle housing is
necessary.
AXLE ASSEMBLY
Removal
1. Loosen the rear wheel stud nuts, then raise the rear
of the vehicle enough to remove the load from the
rear springs. Support vehicle with stand jacks under
frame side rails.
2. Disconnect the hydraulic brake hose from the brake
pipe at the rear axle, or, if the truck is equipped with
air brakes, bleed the system, then disconnect the air
brake hose from the rear brake chambers.
3. Remove the 2 stud nuts retaining rear axle electric
shift unit and pull unit from differential carrier.
Disconnect the electric wiring from the shift unit and
tape wire terminals separately.
4. Remove the two trunnion bearing "U" bolts from the
pinion flange and split the rear universal joint. Swing
the propeller shaft to one side and tie it to the frame
side rail.
5. Remove the rear spring "U" bolts and roll the axle
assembly out from under the truck.
clear of the floor and remove the wheels.
TANDEM AND POWER DIVIDER (EATON)
COMPONENT PART REPLACEMENT
Raise the axle
DRIVE LINE
INDEX
General Description ......................................................... ....4-50
Maintenance and A djustm ent............................................. ....4-50
Rearward Rear Axle ................................................... ....4-50
Forward Rear A x l e ...................................................... ....4-50
Service O p e ra tio n s............................................................ ....4-50
Inter-Axle Differential Lock Shift S y s t e m .................. ....4-50
Vacuum Operated...................................................... ....4-50
O p e ra t io n ............................................................ ....4-50
Checking for L e a k a g e .......................................... ....4-51
Solenoid Lock Valve
Locking C y l i n d e r ................................................ ... 4-52
A ir O p e ra te d ............................................................ ....4-52
O p e ra t io n ............................................................ ....4-52
Checking for L e a k a g e .......................................... ....4-52
Control V a l v e ...................................................... ....
A ir Shift C y lin d e r................................................ ... 4-53
Differential Lockout
Removal and In s ta lla tio n .................................... ... 4-53
Installation
1. Install the wheels, then roll the axle assembly into
position under the truck.
2. Attach axle to the rear springs with the "U" bolts.
Tighten the
torque.
3. Connect propeller shaft to the axle drawing "U"
bolts up tightly.
4. Connect wiring to the axle electric shift unit and in­
stall shift unit on carrier.
5. Connect the hydraulic brake hose to the brake pipe on
the rear axle, then bleed the brakes and check fluid
level in master cylinder. If the truck is equipped
with air brakes, connect air lines to the rear brake
chambers.
. Lower vehicle to floor and tighten rear wheel nuts.
6
7. Fill axle and electric shift unit to proper level with
lubricant.
. Check brake operation. Inspect for air or hydraulic
8
fluid leaks at brake line fittings. Road test vehicle.
Axle Vent Replacement
See "Axle Vent Replacement" Chevrolet 5200 through
17,000 lb. Single Speed Axle.
Axle Shaft—Removal and Installation
See 17,000 lb. Chevrolet Single Speed Axle Shaft Re­
moval and Replacement.
Hub and Drum
Removal, Service and Installation
See 17,000 lb. Chevrolet Single Speed "Hub and Drum."
Page
. . . ................................. ....4-51
4 - 5 3
bolt nuts to 300-320 foot-pounds
CHEVROLET TRUCK SERVICE M ANUAL