Spicer Tandem Drive Axle Dual Range & Double Planetary 34,000-45,000 lbs - Manual (Page 71)

Axle Shift System Components
Air Shift Unit Overhaul
(Cont'd)
1
Assemble Unit
NOTE:
Prior to assembly, the
piston felt oilers should be soaked
in SAE 10 oil for one hour. Lubri-
cate "O" rings with a high-viscosity
silicone oil or barium grease "O"
ring lubricant.
1. Assemble pin to actuating lever
and install this assembly in shift
unit housing.
2. Assemble "O" ring and piston
to push rod and fasten with flat
washer and locknut. Tighten nut
to a torque of 120-150 IN-LBS.
(14-17 Nm). Install felt oilers and
"O" ring in piston.
CAUTION:
DURING THE
FOLLOWING PROCEDURE
USING A PRESS, MAKE CERTAIN
COMPONENTS ARE PROPERLY
ALIGNED IN PRESS TO PREVENT
POSSIBLE PERSONAL INJURY
OR DAMAGE TO PARTS.
3.
Insert piston stop and compres-
sion spring in shift unit housing.
Place piston and push rod assem-
bly in housing. Position housing
assembly in arbor press.
4.
Apply pressure to piston until
actuating lever is in alignment
with push rod end. Install clevis
pin. Release press.
5.
Place cover gasket in position
on shift unit housing then install
cover and bearing assembly and
fasten with cap screw and lock-
washers. If necessary, use a sealer
on threads of cap screws to pre-
vent any leaking. Tighten screws
to a torque of 90-110 IN-LBS.
(10-12 N.m).
6.
Place "O" ring in groove of
shift unit housing, then install
housing cover and secure with
bolts and locknuts. Tighten lock-
nuts evenly to a torque of 108-132
IN-LBS. (12-15 N.m).
7. Fill shift unit with SAE 10 oil or
automatic transmission fluid (see
Lubrication) when axle is installed
in vehicle.
Shift Unit Housing in Press.
Installing Push Rod Clevis Pin.
Lubrication
Lubricant-Use SAE
10 motor oil*
for temperature above 0 o F (-18 o C).
For temperatures below 0 o F
(-18 o C), mix three parts of SAE
10 motor oil with one part of kero-
sene. This cold weather mixture
can be safely used up to 32 o F
(0 o C).
*NOTE:
Commercially available
automatic transmission fluid may
be used in place of SAE 10 motor
oil. Automatic transmission fluid
can be used for all temperatures.
Do not mix kerosene with auto-
matic transmission fluid.
Lubricant Check and Level -
Each 20,000 miles or six months,
remove pipe plug in shift unit hous-
ing cover to check lubricant level.
Lube should be level with bottom
of filler hole.
Lubricant Change -
At least once
a year remove shift unit housing
cover and drain old lubricant.
Wash parts thoroughly and air dry.
Reinstall cover. Remove pipe plug
in cover. Fill through pipe plug
opening until lube is level with
bottom of filler hole.
72