Service Manual

Rev. A
Groundsmaster 360Hydraulic System Page 4 - 28
Traction Circuit Problems
Problem Possible Causes
Traction response is sluggish. Transmission bypass valve(s) is open or defective.
Brake is dragging or binding.
Hydraulic oil is very cold.
Transmission check valve, relief valve and/or flushing valve is leaking.
Charge pressure is low.
Transmission or wheel motor(s) is worn or damaged.
Make sure hydraulic hoses between pump and 4WD manifold are
connected to the correct ports (4WD machines only)
NOTE: If one traction circuit component has internal wear or damage, it
is possible that other traction components are also damaged.
Neutral is difficult to find. External control linkage is misadjusted, disconnected, binding or
damaged.
Make sure neutral devise tension springs are fully tensioned.
Make sure the two (2) traction pedal isolator mounts are not worn or
damaged.
Orifice in transmission check valve(s) is plugged. This orifice is
included in the reverse relief cartridge and is not serviceable
separately.
Transmission is worn or damaged.
No traction exists in either direction
and engine speed remains constant.
Oil level in hydraulic tank is low.
Transmission bypass valves are both open.
Charge pressure is low.
Engine flywheel coupling is damaged.
Transmission or wheel motor(s) is worn or damaged.
NOTE: If one traction circuit component has internal wear or damage, it
is possible that other traction components are also damaged.
Wheel motor will not turn and engine
speed reduces when traction pedal is
pressed..
Transmission bypass valve(s) is open.
Transmission or wheel motor is worn or damaged.
NOTE: If one traction circuit component has internal wear or damage, it
is possible that other traction components are also damaged.