Chevrolet 10 Series 1967, Service Manual

Page: 193 / 605

REAR SUSPENSION AND DRIVE LINE 4-35
Fig . 72 - 5200 Through 17,000 Lb. A x le Pinion O il Seal
axles except for Diagnosis, Disassembly, Assembly and
Adjustment procedure.
On-the-Vehicle Check
1. Raise rear of vehicle until both rear wheels are off
the floor.
2. Shift transmission into gear.
3. Rotate both rear wheels as far forward as possible.
4. With assistant holding left wheel forward, rotate the
right wheel to the rear, checking for free rotation.
5. Rotate both wheels as far to the rear as possible.
6
. While holding the left wheel rearward, rotate the
right wheel forward, again checking for free rotation.
7. Repeat Steps 3-6, holding the right wheel and rotating
the left wheel for left side forward and rearward
operation check.
8
. If wheels cannot be rotated freely as described
above, remove and inspect the No-Spin.
DRIVE LINE
REAR AXLE (CHEVROLET) TWO-SPEED
INDEX
Page
General D e s c r ip t i o n ......................................................... 4-35
Maintenance and A d ju stm en t............................................. 4-37
Component Parts R eplacem ent.......................................... 4-37
Electric Shift S y s t e m ................................................... 4-37
Vacuum Cylinder Diaphragm R ep lacem en t.................. 4-42
Vacuum Cylinder Oil Seal Replacement ..................... 4-42
Page
Shifter Spring R ep lacem en t.......................................... 4-43
Vacuum Shift Control Switch R ep lacem en t.................. 4-43
Speedometer Adapter Control Switch Replacement . . . 4-44
Speedometer Adapter Control Switch Housing
or Case R e p la c e m e n t................................................ 4-44
GENERAL DESCRIPTION
The Chevrolet two-speed axle (fig. 73) is optionally
available in both the 15,000 and 17,000 lb. capacity. In
low gear, torque is transmitted to the differential case
through four planetary pinions to provide long life in se­
vere service. A distinctive feature is that only the
straddle mounted drive pinion and the ring gears operate
to produce the high range reduction, the planet and sun
gears being locked to revolve with the ring gear.
CHEVROLET TRUCK SERVICE MANUAL