Pierce Enforcer, Operator'S Manual

Page: 105 / 196

© 2018 Pierce Manufacturing Inc. All Rights Reserved.
Operating the Engine / 5-43
OPERATION
Winter Front Usage
Winter fronts are not necessary except in extremely cold temperatures or when light engine loads are combined with
a high rate of engine idling. If a winter front is used, it must be placed over the grill on the outside of the vehicle only,
never directly onto the face of the charge air cooler or radiator. On Pierce Custom Chassis this spacing will maintain
a gap of 6 to 14 inches between the winter front and the heat exchanger cores. This installation will restrict the flow
of air through the cooling system to that which can be drawn from below the bumper and will avoid cutting off cooling
airflow entirely.
The use of a winter front increases the need for the operator to carefully monitor engine and
transmission temperatures. Remove the winter front before operating the vehicle in warm
temperatures. Excessive engine and transmission operating temperatures created by the
inappropriate use of a winter front can cause operational failure leading to costly equipment damage.