© 2018 Pierce Manufacturing Inc. All Rights Reserved.
Driving the Vehicle / 5-53
OPERATION
5-28.8 Auxiliary Front Wheel Lock
(Optional)
The auxiliary front wheel lock feature allows the operator to engage the service brakes on the front axle to gain
additional grade holding capability, or to improve stability when the aerial device outriggers raise the rear wheels off
the ground. The parking brake must be engaged before the auxiliary front wheel lock will function.
5-28.9 Air Reservoir Moisture Draining
Collection of moisture in the air reservoirs due to condensation is normal even though the vehicle is equipped with
an air dryer. Open the petcocks on each air tank to drain the condensate.
5-28.10 Air Dryer
Every Pierce Custom Chassis is equipped with an air dryer that removes moisture and contaminants from the
pressurized air which comes from the engine-mounted compressor before it reaches the air reservoirs. Moisture is
collected on the surface of desiccant pellets and is discharged out the bottom of the air dryer each time the governor
unloads.
5-28.11 Grade Holding and Brake Burnishing
The ability of the vehicle to park downhill or uphill is affected by the conformity of the friction material to the brake
drum or rotor. This conformity improves through the natural burnishing action of brake applications during the early
life of the vehicle. The ability of the vehicle to hold on a specific grade is determined after the brakes have been fully
burnished. See
The auxiliary front wheel lock feature uses air brake system pressure to keep the front brakes applied.
It should be used only with the engine running and a qualified attendant present at all times. It is a
supplemental brake only, which does not meet the FMVSS parking brake criteria and must be used in
conjunction with the yellow parking brake valve when parking the vehicle. Failure to follow these
precautions could lead to loss of vehicle control causing property damage, serious personal injury, or
death.
The capability of the vehicle to hold on a specific grade may decrease temporarily whenever new
friction material is installed. Use wheel chocks when parking on a grade to avoid loss of vehicle control
resulting in possible property damage, personal injury, or death.
Summary of Contents for Enforcer
Page 1: ... 2018 Pierce Manufacturing Inc Part No PM C OM014 SEN 0718 Operator s Manual Saber Enforcer ...
Page 2: ......
Page 18: ...FOREWORD 1 6 To the Owner and Operator 2018 Pierce Manufacturing Inc All Rights Reserved ...
Page 30: ...SAFETY 2 12 Safety and Responsibility 2018 Pierce Manufacturing Inc All Rights Reserved ...
Page 122: ...OPERATION 5 60 Driving the Vehicle 2018 Pierce Manufacturing Inc All Rights Reserved ...
Page 184: ...A 4 2018 Pierce Manufacturing Inc All Rights Reserved ...