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STEERING CIRCUIT OPERATION
The steering/brake pump (7, Figure 4-1) supplies oil to
the bleeddown manifold (4) after passing through a
high pressure filter (10). If the filter element becomes
1. Steering Cylinders
2. Manifold
3. Flow Amplifier Valve
4. Bleeddown Manifold
5. Steering Circuit Accumulators
L04031
STEERING CIRCUIT
FIGURE 4-1. STEERING SYSTEM COMPONENTS (Bottom View)
Steering Circuit
restricted, a warning indicator is activated at 40 psi (276
kPa) and oil will bypass the element at 50 psi (345 kPa).
System pressure is regulated to between 2750 psi (19.0
MPa) and 3025 psi (20.9 MPa) by an unloader valve
located on the bottom of the steering pump case.
6. Hoist Circuit Pump
7. Steering/Brake Pump
8. Hydraulic Tank
9. Shut-off Valve
10. Steering/Brake Circuit Filter
L4-1
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Table of Contents
Troubleshooting
