Raising a Vehicle without Air
Suspension
1.
Park the vehicle on a level surface, set the
parking brakes, and shut down the engine.
Chock the tires.
WARNING
Do not use bottle jacks to raise the vehicle.
Always use floor jacks. Bottle jacks can slip,
allowing the vehicle to fall, which could result in
damage to the vehicle, serious injury, or death.
IMPORTANT: Only lift unloaded vehicles and
vehicles disconnected from trailers. Unload
vehicles with bodies (drilling rigs, mixers) as
much as possible.
2.
Place a floor jack under the axle housing, the
clamp group, or the frame rail.
NOTICE
NOTICE: Do not place jack stands under any of
the suspension components; doing so could
cause suspension component damage. Jack
stands can be placed at any point below the axle,
including the differential area.
3.
Raise the vehicle. Add additional jack stands, as
needed, to support the vehicle.
Lowering a Vehicle without Air
Suspension
WARNING
Do not use bottle jacks to raise the vehicle.
Always use floor jacks. Bottle jacks can slip,
allowing the vehicle to fall, which could result in
damage to the vehicle, serious injury, or death.
NOTICE
NOTICE: Do not place jack stands under any of
the suspension components; doing so could
cause suspension component damage. Jack
stands can be placed at any point below the axle,
including the differential area.
1.
Using the floor jack, raise the vehicle to remove
any jack stands used to support the vehicle.
2.
Slowly lower the vehicle to the ground.
Front Towing Hookup With
Removable Tow Hooks
NOTICE
Towing the truck from the front and removing all
of the drivelines is the approved method for
towing DTNA products. Towing any other way is
not preferred.
DANGER
When working on the vehicle, shut down the
engine, set the parking brake, and chock the
tires. Before working under the vehicle, always
place jack stands under the frame rails to ensure
the vehicle can not drop. Failure to follow these
steps could result in serious personal injury or
death.
WARNING
Do not tow an unbraked vehicle if the combined
weight of both vehicles is more than the sum of
the gross axle weight ratings (GAWR) of the
towing vehicle. Otherwise brake capacity will be
inadequate, which could result in personal injury
or death.
Use of Tow Hooks
Tow hooks are not designed for on-road towing of
the vehicle, but to recover and move the vehicle to a
position where it can be hooked up properly for front
towing.
NOTICE
When using tow hooks to move the vehicle, do
not pass a sling (for example, a rope or chain)
from one hook to another. Known as reeving, this
practice is not permissible in most industrial
applications of towing and hoisting. Reeving can
overload the hooks and result in damage to the
vehicle. See
Fig. 23.5.
1.
Disconnect the battery ground cables.
In an Emergency
23.5
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