Hydraulic Section
8-45
6036, 6042, 8042, 10042, 10054 31211015
8.8.5 Brake System Check
1. Place the transmission in (N) NEUTRAL, engage the park
brake, and start the engine.
2. Attach pressure gauge to brake pressure tap (3).
3. Apply service brakes with a single pedal press to STOP.
Hold the brake pedal in this position and measure the
gauge pressure. the allowable pressure limit is
725 - 760 psi (50 - 52.4 bar).
4. Measure the distance from the back of the pedal arm to
cab firewall. This distance should be 73 mm (2.88 in).
8.8.6 Steering Orbitrol Valve
The power steering valve (3) is located at the base of the
steering wheel shaft, concealed by the lower dash cover. The
valve is not serviceable and must be replaced in its entirety if
defective. For detailed information refer toSection 4.3.2,
“Steering Column and Steering Valve”.
8.8.7 Steer Select Valve
The machine can be used in the front-wheel, four-wheel or
crab steering mode. The steer select valve (4) controls the
direction of hydraulic fluid flow to the steering cylinders
mounted on each axle. The steer select valve is attached to a
manifold mounted to a mounting plate inside the frame near
the fuel tank.
Verify the correct operation of the steer select valve
solenoids before considering replacement of the valve. The
housing of the steer select valve is not serviceable and must
be replaced if defective.
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