THEORY OF OPERATION - CONTINUED
BRAKE AND HYDRAULIC FAN SYSTEM - CONTINUED
Parking brake is located in drive line on
front end of machine just ahead of artic-
ulated hitch. When brake system oil
pressure drops below a given level, park-
ing brake actuator engages parking
brake. Parking brake indicator light is
located on dash panel display and will
illuminate when parking brake is
engaged (TM 5-3805-291-10). Parking
brake indicator light should flash during
Parking brake can be engaged manually by pushing top of parking brake switch. Parking brake switch is
located on dashboard to left of steering column (TM 5-3805-291-10).
A normally closed pressure switch is located on parking brake control valve. When parking brake engages,
pressure switch sends a signal to transmission ECM. When parking brake engages, pressure switch acti-
vates parking brake indicator light.
When parking brake engages, transmission will shift into NEUTRAL if transmission is in first speed for-
ward or reverse.