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Greensmaster 3150 Hydraulic SystemPage 4 -- 25
Steering Circuit Problems
Problem Possible Cause
Steering wheel is hard to turn. Oil supply to the steering control valve is insufficient (traction
charge and lift circuits affected as well).
Emergency steering ball in steering control valve is missing or
damaged.
Regular adjustments to steering
wheel are necessary because of dif-
ficulty of driving in a straight line.
Leaf springs in s teering control valve are worn or broken.
Gear wheel set in steering control valve is worn.
Steering cylinder is seized or its piston seals are worn (see Steer-
ing Control Valve Test in the Testing section of this chapter).
Steering wheel will not return to the
neutral position.
Spool and sleeve are sticking to steering control housing assembly
(see Steering Control Valve Test in the Testing section of this
chapter).
Steering wheel can turn on its own. Leaf springs in steering control valve are broken or stuck.
Spool and sleeve are sticking to steering control housing assembly
(see Steering Control Valve Test in the Testing section of this
chapter).
Backlash results when turning steer-
ing wheel.
Cardan shaft fork is worn or broken.
Leaf springs in s teering control valve are worn or broken.
Rear wheel shimmies when the
steering wheel is turned.
Air is in the steering cylinder.
Mechanical connections to the wheel or wheel bearing are worn.
Thesteeringwheelcanbeturned
without the rear wheel turning.
The steering cylinder is worn.
The gear set in the steering control valve is worn.
Steering response is too slow and
heavywhentryingtoturnquickly.
Oil supply to the steering control valve is insufficient (traction
charge and lift circuits affected as well).
Turning steering wheel turns ma-
chine in the opposite direction.
Hoses to the steering cylinder are reversed.
Steering force (possibly to one side
only) is insufficient.
Hydraulic flow to steering control valve is low (traction charge and
lift circuits affected as well).
Implement relief valve is leaking or damaged (see Implement Relief
Valve Pressure Test in the Test ing section of this chapter).
Hydraulic
System