Steering Loss; Cutting Units Lift Slow Or Won't Lift; Cutting Units Won't Drop Or Follow Ground Contours - Toro Reelmaster
4000?D Service Manual

Problem

Steering loss.

Cutting units lift slowly or won't lift.

Cutting units won't drop or follow ground contours.

Reelmaster 4000−D
Possible Causes
Thermal shock after washing.
NOTE: Normal functions will return after orbital tem-
peratures stabilize (approximately 15 minutes). DO
NOT ATTEMPT TO TURN STEERING WHEEL UN-
TIL TEMPERATURES STABILIZE WHEN THER-
MAL SHOCK IS NOTED.
Improper cylinder action.
Low steering relief pressure. (See Test No. 6.)
Worn or damaged steering cylinder.
Worn or damaged steering pump.
Worn or damaged steering control unit.
Low engine RPM.
Low hydraulic oil level.
Binding lift arm pivot points or bushings.
Worn or damaged bushings.
Worn or damaged cylinders.
Improper counterbalance pressure.
(See Test No. 2.)
Worn or damaged counterbalance valve.
Low lift relief pressure. (See Test No.7.)
Plugged cylinder orifice.
Worn or damaged lift valve.
Worn or damaged steering/lift pump.
Low engine RPM.
Low hydraulic oil level.
Binding lift arm pivot points or bushings.
Worn or damaged bushings.
Worn or damaged cylinders.
Improper counterbalance pressure.
(See Test No. 2.)
Worn or damaged counterbalance valve.
Plugged cylinder orifice.
Worn or damaged spool detent in lift valve.
Worn or damaged lift valve.
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