Troubleshooting - Toro Groundsmaster 300 Series Service Manual

Troubleshooting

Problem
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Steering Wander
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Poor or No Returnability (Recovery)
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Shimmy
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High Steering Effort in One Direction
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High Steering Effort in Both Directions
®
Groundsmaster 300 Series
Possible Causes
Tire pressure incorrect or unequal left to right.
Loose or worn steering linkage.
Improperly adjusted or worn rear wheel bearings.
Rear wheels out of alignment; toe-in / toe-out.
Internal leakage of steering cylinder.
Improper rear wheel alignment; toe-in.
Steering linkage binding.
Low tire pressure.
Steering column binding or out of alignment.
Steering linkage loose, worn or out of adjustment.
Wheel bearings out of adjustment.
Air in hydraulic system.
Internal leakage of steering cylinder.
Low hydraulic system pressure.
Excessive heat causing steering valve plate valve to
stick (See Excessive Heat in this section).
Cold hydraulic oil or oil viscosity not correct for
ambinent temperature.
Low hydraulic fluid level.
Low flow or pressure from hydraulic pump.
Steering linkage binding.
Restriction in hydraulic return line.
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