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4) Manual Operation
In the event of a power steering pump failure or loss of oil pressure, the power steering system can be operated manually. In
this case, turning the steering wheel drive the Gerotor gear pump to force oil into the power steering cylinder to whichever
side of the cylinder required as directed by the rotation of the steering wheel. On the suction side of the Gerotor pump,
return oil flows from the cylinder and is drawn through the check valve (7) to feed the Gerotor. When additional oil supply
is required, as in making a left turn, make-up oil from the valve (7) to feed the Gerotor pump.
504X
1. Relief Valve 4. Steering Cylinder 7. Check Valve
2. Oil Pump 5. Gear Pump (Gerotor Pump)
3. Oil Tank 6. Check Valve - Kick-Back
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