vibration rubber "iso" mounts shall be used for mounting of the charge-air cooler to the engine
radiator.
The charge air piping between the engine and charge-air cooler shall be aluminum tubing with a
wall thickness of .065 inch. The system shall utilize four (4) ply silicone rubber woven Nomex
hoses with stainless steel pressure bands. All clamps used on the charge air piping are to be
stainless steel constant torque and shall be installed at each joint.
COOLANT
The coolant system shall contain an ethylene glycol and water mixture to keep the coolant from
freezing to a temperature of -34 degrees F.
COOLANT HOSES
The entire chassis cooling system shall have premium rubber hoses. All clamps to be stainless steel
worm drive type clamps.
HEATER LINE SHUT OFF VALVES
The cab heater circuit shall have quarter turn shut off valves installed on both the supply and return
lines to allow a complete shut off of coolant flow to the cab heaters. These valves shall be installed
in addition to the valves in the heater units.
RADIATOR SKID PLATE
To protect the radiator a 1/4 inch thick steel skid plate shall be installed under the radiator.
ENGINE DRAIN PLUG
A magnetic drain plug shall be installed in the engine oil pan.
ENGINE BRAKE
A "JACOBS" Engine Brake shall be supplied.
The Driver's dash shall include engine brake control switches.
The transmission shall be programmed to operate in the pre-select downshift mode to maximize the
retarding power of the engine brake.
The brake lights shall illuminate when the Jacobs Brake is in operation.
ENGINE FAST (HIGH) IDLE
The chassis shall be equipped with an Electronic Idle Control.
The fast idle provision shall only function when the parking brake is set and the transmission is in
neutral. Manual selection of the fast idle shall be controlled by a driver's momentary switch.
Automatic activation of the fast idle shall occur when a low voltage condition exists, the truck is in
neutral and the parking brakes are applied.
Cancellation of the fast idle shall be achieved by resetting the manual switch or by depressing the
service brake pedal.
CORROSION INHIBITOR
