VEHICLE RECOVERY AND SPRING BRAKES
Driver Controlled Main Differential
Lock
1
Air Line (remove to install
Caging Bolt)
2
Caging Bolt (in storage
location)
1.
Lift driving wheels off the ground
or remove the driveline and axle
shafts before towing the vehicle.
CAUTION
Failure to lift the driving wheels off
the ground or remove the driveline
and axle shafts before towing the ve-
hicle could seriously damage your
vehicle. All lubricating and clutch ap-
plication oil pressure is provided by
an engine-driven pump, which does
not work when the engine is stopped.
When vehicles are towed either by
wrecker or piggyback, lubricant in the
top front of the drive axle will drain to
the rear. This will leave the top com-
ponents dry, resulting in friction that
will seriously damage these compo-
nents.
2.
Cover open hubs when removing
drive axle shafts.
CAUTION
Water, dirt and other material can
enter an open hub or axle.
This
can contaminate the axle fluid and
cause possible damage to compo-
nents. Ensure that the hubs are cov-
ered with plastic whenever a drive
axle shaft is removed.
3.
For vehicles with driver-controlled
main differential lock, install the
caging bolt before removing the
axle shafts for towing.
a.
Remove the air line and firmly
cap.
b.
Remove the caging bolt from
its storage hole.
c.
Screw the caging bolt into
the air line hole. When
fully engaged, a 0.25 - 0.5
in. (6.35-12.7 mm) space
will remain between the air
cylinder and the bolt head.
2-16
Y53-6060-1C1
(03/17)
2
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