Steering Circuit Problems; Lift Circuit Problems - Toro Reelmaster 3100-D Service Manual

Steering Circuit Problems

Lift Circuit Problems

Reelmaster ® 3100-D/3105-D
20252SL Rev A
Problem
Steering inoperative or sluggish.
Turning steering wheel turns machine in the
opposite direction.
Problem
Cutting units will not lift or lift slowly.
Cutting units raise, but will not stay up.
Cutting units will not lower.
Note: To lower the cutting units, the seat must
be occupied and the mow/transport switch
must be in the MOW position.
Possible Causes
Oil level in hydraulic reservoir is low.
Note: Other hydraulic systems are affected
as well.
Steering components (e.g. steering fork
assembly, steering cylinder ends) are worn or
binding.
Relief valve in steering control valve is
damaged − open.
Steering cylinder leaks internally.
See Danfoss steering control service
Gear pump (P2) is worn or damaged.
Note: The lift/lower and traction charge circuits
are affected as well.
Hoses to the steering cylinder are reversed.
Possible Causes
Engine speed is too low.
Charge (gear) pump is damaged.
Lift cylinder linkage is binding or broken.
Lift cylinder bushings are binding.
Reservoir oil level is low.
Charge pump pressure or flow is insufficient.
Implement relief valve (1000 PSI) is stuck
open.
Lift cylinders leak internally.
Steering control valve is defective.
Lift circuit hydraulic lines or fittings are leaking.
Lift cylinders leak internally.
Lift control manifold cartridge valve(s) has
damaged seals or is faulty.
Lift arm pivots are binding.
Lift cylinder(s) for affected cutting unit(s) is
damaged.
Page 3–5
manual.
Troubleshooting: