PIN 2179512 - Caterpillar

Illustration 1 g06059503
Operator Platform
(1) Ventilation motorThe machine may be fitted with optional ventilation motor (1). The motor is located under the operator platform in the center of the machine. The right side compartment door provides limited access to the ventilation motor.Ventilation motor (1) is a gear motor. The ventilation motor operates at 2200 rpm.Ventilation motor (1) turns a blower at the base of the exhaust stack. The blower draws the asphalt fumes through vents in the material feed tunnel. The blower pushes the fumes out the exhaust stack.
Illustration 2 g06058908
Operator Platform
(2) Ventilation valve
(3) Ventilation solenoidVentilation valve (2) is located under the cooling package in the center of the machine. The aftercooler compartment cover provides restricted access to the valve.Ventilation valve (2) contains a 1.32 mm (0.052 in) orifice to govern the speed of the motor. Ventilation solenoid (3) controls the flow of hydraulic oil to the ventilation motor. The machine ECM controls the ventilation solenoid.
Illustration 3 g06059507
Operator Platform
(4) Pressure gaugePressure gauge (4) is on the panel, in the center of the operator platform. The pressure gauge is visible from either machine operator station.Pressure gauge (4) measures the exhaust duct pressure of the ventilation system. The pressure is measured in inches of water column (W.C.). Normal operating pressure is approximately 1.0 in. WC. If the pressure drops to 0.6 in. WC, cleaning or servicing of the exhaust duct may be required.