Steering System Problems - Toro Groundmaster Series Service Manual

Steering System Problems

Problem
Steering is sluggish, operates poorly or
is inoperative.
Turning steering wheel turns wheels in
the wrong direction.
Gear pump (P2) are noisy from
cavitation (steering, traction charge,
and lift circuit performance is affected).
Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A
Possible Cause
Steering components (e.g. rod ends,
steering cylinder, steering stops) are
worn or binding.
The charge pressure is low (steering
and lift circuit performance is also
affected).
Relief valve (R4) in the steering control
valve is faulty.
Steering control valve is worn or
damaged.
Hydraulic hoses to the steering
cylinders are connected incorrectly.
The hydraulic fluid level in the hydraulic
tank is low (other hydraulic circuit
performance is affected as well).
The suction filter or suction line is
damaged, loose, or clogged.
Page 3–19
Corrective Action
Inspect steering components and repair
or replace if necessary.
Verify and adjust rod end and steering
stop lengths and adjust if necessary.
Verify charge pressure; refer to Testing
the Traction Circuit – Charge Pressure
in the Hydraulic System chapter of this
manual.
Verify gear pump (P2) performance;
refer to Testing the Steering and Lift
Circuit – Gear Pump (P2) Flow and
Circuit Relief Valve in the Hydraulic
System chapter of this manual.
Verify relief valve (R4) operation; refer
to Testing the Steering and Lift Circuit
– Steering Cylinder and Circuit Relief
Valve in the Hydraulic System chapter
of this manual.
Rebuild or replace the steering control
valve.
Correct hydraulic hose connections.
Adjust the hydraulic fluid level.
Secure, clean or replace the suction
filter or suction line.
Troubleshooting: Steering System Problems