2-3. CHASSIS CONTROLS AND INDICATORS (Contd)
Item and Function
DUMP BODY CONTROL LEVER (M929/A1A2 and M930/A1/A2 models) is pushed back to raise dump body
and pulled forward to lower dump body.
TRANSFER CASE POWER TAKEOFF CONTROL LEVER (M936/A1/A2 models) is engaged to provide
power to crane and rear winch.
SAFETY LATCH secures dump body control in neutral when not in use.
MECHANICAL PARKING BRAKE CONTROL LEVER is pulled up to engage parking brakes and down to
disengage brakes. Knob on top of handle is turned clockwise to increase parking brake tension and
counterclockwise to decrease parking brake tension. When parking brake lever is applied, it also trips a valve to
release air pressure from spring brakes. This engages spring brakes.
TRANSFER CASE SHIFT LEVER is pushed down to high range for light load operations and up to low range for
heavy load operations. Six-wheel drive is achieved automatically when transfer case shift lever is placed in low
ACCELERATOR PEDAL controls engine speed.
BRAKE PEDAL is depressed to stop vehicle.
DIMMER SWITCH is depressed to raise or lower headlight beam.
COWL VENTILATOR (one on each side of cab) is opened manually to provide fresh air ventilation.
ACCESS DOOR opens to provide access to transmission dipstick and oil fill (M939/A1 series vehicles).
TRANSMISSION DIPSTICK is turned counterclockwise to remove and check transmission oil level, (M939/A1