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TM10-3930-660-10
1-14. TRANSMISSION LUBRICATION AND COOLING SYSTEMS.
TRANSMISSION OIL FILTER. Located on right side, just above the boom hoist cylinder on the engine
bulkhead. Filter removes particles in the oil which could damage internal components of the
transmission. A pump inside the transmission produces oil flow through the filter, transmission, and oil
cooler.
TRANSMISSION OIL COOLER. The cooler is located in the bottom of the radiator.
radiator is circulated across the cooler to lower the transmission oil temperature.
1-15. STEERING AND BRAKE SYSTEM.
Coolant from the
STEERING CYLINDERS. A cylinder is mounted at both ends of each axle and controlled by the
steering wheel.
STEERING CONTROL VALVE. Connected directly to the steering wheel and located behind the
instrument access panel. Controls the steering function by directing the flow of hydraulic fluid to the
cylinders.
STEER SELECT VALVE. Externally mounted under the cab. Allows the selection of two wheel, four
wheel, or crab steering through the steer select control, a three position switch.
BRAKE CONTROL VALVE. Located under the cab. Provides a priority flow to the brake system.
Excess flow is directed by the priority valve to the frame tilt system.
SERVICE BRAKES. Dry disc, caliper type brakes are mounted on all four wheels. The service brakes
are hydraulically actuated by pressing the brake or transmission disconnect pedals. An accumulator in
the braking system enables a limited number of stops without engine power.
PARKING BRAKE. A mechanically actuated drum brake is mounted on the front axle input shaft. A
lever in the cab engages and disengages the parking brake.
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