McNeilus HD Rear Loader, Operator'S Manual

Page: 84 / 132

© 2008 McNeilus Truck and Manufacturing, Inc.
Rear Loader
70
4.6 Auxiliary Axle
NOTE
The following information is for auxiliary
axles installed by McNeilus Truck and
Manufacturing, Inc. Refer to chassis
manufacturer information for axle installed
by the chassis manufacturer or a third party.
The auxiliary axle down force is controlled by regulated air
pressure to the axle suspension air springs. The regulated
air pressure is preset at the factory to a common pressure
setting. Determine the actual regulated air pressure by
driving the vehicle over a truck scale at the various weights
the vehicle will be operated at up to the GVWR as shown on
the Final Stage Manufacturer Label located on the driver’s
side cab doorjamb (see Section 2 in the Foreword). Adjust
the regulated air pressure according to the auxiliary axle
manufacturer’s pressure/weight chart located in the cab
information packet supplied with the vehicle. The air pressure
gauge is located in the cab of the vehicle and may also be
located outside of the cab.
Always follow your company’s policies and procedures when
adjusting the air pressure. If you have any questions, call
McNeilus Parts and Service branches at 888-686-7278.
Operation
WARNING
Do not operate your vehicle until you have
determined the actual regulated air pressure
for the auxiliary axles. Improper regulated air
pressure will affect handling of the vehicle.
Failure to adjust and maintain the regulated
air pressure correctly may result in serious
personal injury or death.
A pusher axle option is mounted in front of the rear drive axle.
A tag axle option is mounted behind the rear drive axle. Either
axle is pneumatically applied, and is controlled by an option
switch on the cab console (see Section 1.0 Instruments and
Controls).
NOTE
Only lower the pusher axle after you have
started your route. Never lower the axle when
the packer is empty. When emptying the
packer, the pusher axle must be in the
raised position.