Steering Circuit Problems - Toro 04384 Service Manual

Steering Circuit Problems

Problem
Steering wheel is hard to turn.
Regular adjustments to steering
wheel are necessary because of dif-
ficulty of driving in a straight line.
Steering wheel will not return to the
neutral position.
Steering wheel can turn on its own.
Backlash results when turning steer-
ing wheel.
Rear wheel shimmies when the
steering wheel is turned.
The steering wheel can be turned
without the rear wheel turning.
Steering response is too slow and
heavy when trying to turn quickly.
Turning steering wheel turns ma-
chine in the opposite direction.
Steering force (possibly to one side
only) is insufficient.
Greensmaster 3250--D
Possible Cause
Steering valve has insufficient oil flow (charge and lift circuits af-
fected as well).
Emergency steering ball in steering valve is missing or damaged.
Leaf springs in steering valve are worn or broken.
Gear wheel set in steering valve is worn.
Steering cylinder is seized or has worn piston seals (see Steering
Valve Test).
Spool and sleeve are sticking to steering valve housing assembly
(see Steering Valve Test).
Leaf springs in steering valve are broken or stuck.
Spool and sleeve are sticking to steering valve housing assembly
(see Steering Valve Test).
Cardan shaft fork in steering valve is worn or broken.
Leaf springs in steering valve are worn or broken.
Splines on the steering column are worn.
Air is in the steering cylinder.
Mechanical connections to the wheel or wheel bearing are worn.
The steering cylinder is worn.
The gear set in the steering valve is worn.
Oil supply to the steering valve is insufficient (charge and lift circuits
affected as well).
Hoses to the steering cylinder are reversed.
Hydraulic flow to power steering is low (charge and lift circuits af-
fected as well).
Implement relief valve in steering valve is leaking or damaged.
Page 4 - - 27 Hydraulic System