PART 7: STARTING & OPERATING THE VEHICLE PUTTING THE VEHICLE IN MOTION
(05/10) Y53-6032 – 103 –
WARNING! Do not use the differential lock at
speeds greater than 25 mph (40 kph); it could
lead to an accident involving death or per-
sonal injury. A vehicle with the differentials
locked will be difficult to steer. At higher
speeds, you may loose control of the vehicle.
Only engage the differentials to maneuver
through areas of poor traction. Do not keep
driving with the switch in the LOCK position.
Dual Range (Two Speed) Axles
If you have this option, dual range axles provide two rear
axle ratios for operating under heavy loads or off-highway
as well as for over the road trucking. The Low range pro-
vides maximum torque for off-road work. The High range
is a faster ratio for highway speeds and conditions. A
switch on your instrument panel controls this function. You
will notice that it has a guard to protect you from activating
it accidentally.
Range Selector
Using Your Dual Range Axle
WARNING! Never shift the axle when moving
downhill. Engine driveline disengagement
may occur, eliminating engine retardation and
allowing the wheels to spin faster than the
current speed of the engine. This may require
severe braking to slow the vehicle down and
can result in an accident involving death or
personal injury.
1. Unlock the interaxle differential before starting.
2. Put the Range Selector in the LOW range. Shift the
transmission to start the truck moving.
03030
2
Y53-6032.book Page 103 Monday, May 24, 2010 3:37 PM
To Next Page
Loading...
