Toro Workman 3000 Series Service Manual page 203

Problem
Lift cylinders extend with valve in
neutral position.
Bed drops from raised position with
lift valve in centered position.
Steering inoperative or sluggish
Workman 3000/4000 Series
Possible Cause
Load checks in hydraulic lift valve are leaking.
Lift valve lever is sticking.
Lift valve control handle is not in correct location.
Hydraulic relief valve stuck or damaged (see TEST NO. 1).
Improperly positioned valve.
Lift valve worn or damaged.
Internal leakage of lift cylinder(s).
Lift cylinder hydraulic lines or fittings leaking.
Engine speed is low.
Oil level in transaxle is low.
Steering components (Pitman arm, tie rods, steering cylinder rod
ends) worn or binding.
Gear pump drive belt is loose (Note: Loose belt will also cause the
bed not to lift or other attachment to not operate).
Steering cylinder is binding.
Hydraulic relief valve stuck or damaged (see TEST NO. 1).
Steering control valve is worn or damaged.
Pulley key (either on drive or driven pulley) is sheared (lift circuit
affected as well).
Steering cylinder leaks internally.
Low gear pump flow or pressure (see TEST NO. 1) (Note: Low
pump flow or pressure will also cause the bed not to lift or other
attachment to not operate).
Gear pump is worn or damaged (Note: entire hydraulic system af-
fected).
Page 9 - - 13 Hydraulic System