Chevrolet 30 Series 1967 Service Manual page 193

Fig. 72 - 5200 Through 17,000 Lb. A x le Pinion O il Seal
REAR AXLE (CHEVROLET) TWO-SPEED
General D e s c r ip t io n ......................................................... 4-35
Maintenance and A djustm en t............................................. 4-37
Component Parts Replacem ent.......................................... 4-37
Electric Shift S y s t e m ................................................... 4-37
Vacuum Cylinder Diaphragm R eplacem en t.................. 4-42
Vacuum Cylinder Oil Seal Replacement
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
axles except for Diagnosis, Disassembly, Assembly and
Adjustment procedure.
On-the-Vehicle Check
1. Raise rear of vehicle until both rear wheels are off
2. Shift transmission into gear.
3. Rotate both rear wheels as far forward as possible.
4. With assistant holding left wheel forward, rotate the
5. Rotate both wheels as far to the rear as possible.
6
7. Repeat Steps 3-6, holding the right wheel and rotating
8
DRIVE LINE
INDEX
Page
..................... 4-42
GENERAL DESCRIPTION
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.
REAR SUSPENSION AND DRIVE LINE 4-35
the floor.
right wheel to the rear, checking for free rotation.
. While holding the left wheel rearward, rotate the
right wheel forward, again checking for free rotation.
the left wheel for left side forward and rearward
operation check.
. If wheels cannot be rotated freely as described
above, remove and inspect the No-Spin.
Shifter Spring R eplacem en t.......................................... 4-43
Vacuum Shift Control Switch R ep lacem en t.................. 4-43
Speedometer Adapter Control Switch Replacement . . .
Speedometer Adapter Control Switch Housing
or Case R e p la c e m e n t................................................ 4-44
Page
4-44
CHEVROLET TRUCK SERVICE MANUAL