Traction Circuit Problems - Toro Groundsmaster 360 Service Manual

Traction Circuit Problems

Problem
The traction response is sluggish.
Neutral is difficult to find.
No traction exists in either direction and the engine speed
remains constant.
The wheel motor does not turn and the engine speed
reduces when the traction pedal is pressed.
The wheel motor does not hold load in the N
Note: The machine may not be completely stationary if
parked on an incline without the parking brake engaged.
Groundsmaster 360
16225SL Rev C
• The transmission bypass valve(s) is open or damaged.
• The brake is dragging or binding.
• The transmission-check valve, relief valve, and/or flushing
valve is leaking.
• The charge pressure is low.
• The hydraulic fluid is very cold.
• The transmission or wheel motor(s) is worn or damaged.
Note: If 1 traction circuit component has internal wear or
damage, it is possible that the other traction components
are also damaged.
• The external control linkage is incorrectly adjusted,
disconnected, binding, or damaged.
• The orifice in the transmission-check valve(s) is plugged.
• The transmission is worn or damaged.
• The hydraulic-fluid level in the hydraulic tank is low.
• The transmission bypass valves are open.
• The charge pressure is low.
• The engine flywheel coupling is damaged.
• The transmission or wheel motor(s) is worn or damaged.
Note: If 1 traction circuit component has internal wear or
damage, it is possible that the other traction components
are also damaged.
• The transmission bypass valve(s) is open.
• The transmission or wheel motor is worn or damaged.
Note: If 1 traction circuit component has internal wear or
damage, it is possible that the other traction components
are also damaged.
position. • The make-up fluid from the charge pump is not available.
EUTRAL
• The check valves in the transmission are damaged.
• The valve plate(s) in the transmission is worn or damaged.
• The wheel motor is worn or damaged.
• The PD1 or PD2 cartridge in the traction manifold is leaking
or damaged.
• The cylinder block assembly in the transmission is worn
or damaged.
• The external neutral linkages are out of adjustment.
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Possible Causes
Hydraulic System: Troubleshooting