Service manual

Groundsmaster 3280--D/3320 Hydraulic SystemPage 5 -- 17
Problem Possible Cause
Traction response is sluggish Charge pressure is low.
Hydraulic oil is very cold.
Hydrostat check valve is not seating or is damaged.
Brakes are not released.
Hydrostat is worn or damaged.
No traction in either direction Brakes are not released.
Oil level in reservoir (front axle) is low.
Hydrostat check valve is not seating or is damaged.
Charge pressure is low.
Transmission drive shaft or k ey damaged (steering and lift circuits
affected as well).
Hydrostat is worn or damaged.
Front axle is damaged.
Cutting deck (or implement) will not
lift or lifts slowly
Engine speed is too low.
Cutting deck has excessive debris buildup in cutting chambers.
Lift arm(s) is (are) binding.
Lift valve control linkage is binding or broken.
Lift cylinder(s) is (are) binding.
Reservoir (front axle) oil level is low.
Charge pump pressure or flow is insufficient.
Implement relief valve is stuck or damaged (Note: steering circuit
also affected).
Lift control valve is damaged.
Lift cylinder leaks internally.
Hydraulic
System