Toro Greensmaster TriFlex 3400 - Adjustments 5; Steering Circuit Problems

Greensmaster 3300/3400Hydraulic System Page 5 -- 30
Steering Circuit Problems
Problem Possible Cause
Steering wheel is hard to turn. Power steering valve has insufficient oil flow (see Steering/Lift Cir-
cuit Gear Pump Flow Test in the Testing section of this chapter).
Emergency steering ball in power steering valve is missing or dam-
aged.
Regular adjustments to s teering
wheel are necessary because of dif-
ficulty to drive in a straight line.
Leaf springs in power steering valve are worn or broken.
Gear wheel set in power steering valve is worn.
Steering cylinder is seized or its piston seals are worn (see Power
Steering Valve Test in the Testing section of this chapter).
Steering wheel will not return to the
neutral position.
Spool and sleeve are sticking to power steering housing assembly
(see Power Steering Valve Test in the Testing section of this chap-
ter).
Steering wheel can turn on its own. Leaf springs in power steering valve are broken or s tuck.
Spool and sleeve are sticking to power steering housing assembly
(see Power Steering Valve Test in the Testing section of this chap-
ter).
Backlash results when turning steer-
ing wheel.
Cardan shaft fork in power steering valve is worn or broken.
Leaf springs in power steering valve are worn or broken.
Splines on the steering column are worn.
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.
The steering wheel can be turned
without the rear wheel turning.
The steering cylinder is worn.
The gear set in the power steering valve is worn.
Steering response is too slow and
heavy when trying to turn quickly.
The rear gear pump section is worn or damaged (steering and
charge circuits affected as well) (see Steering/Lift Circuit Gear
Pump Flow Test in the Testing section of this chapter).
Turning steering wheel turns ma-
chine in the opposite direction.
Hoses to the steering cylinder are reversed.
Hoses to the power steering valve are not connected to correct
ports.
Steering force (possibly to one side
only) is insufficient.
Relief valve in power steering valve is leaking or damaged (see
Steering/Lift Relief Valve Pressure Test in the Testing section of this
chapter).
Rear gear pump s ection is worn or damaged (steering and charge
circuits affected as well) (see Steering/Lift Circuit Gear Pump Flow
Test in the Testing section of this chapter).