Lift/Lower Circuit Problems; Steering Circuit Problems - Toro Groundsmaster 3280-D Service Manual

Lift/Lower Circuit Problems

The cutting deck (or implement) will not lift or lifts slowly.
The cutting deck (or implement) raises, but does not stay up.

Steering Circuit Problems

The steering is inoperative or sluggish.
Hydraulic System: Troubleshooting
Problem
Problem
• Engine RPM is too low.
• The cutting deck has excessive unwanted elements in
cutting chambers.
• The lift arm or lift cylinder is binding.
• The lift valve control linkage is binding or broken (except
3280-D Models 30344 and 30345).
• The hydraulic-fluid level in the reservoir (front axle) is low.
• The charge pump pressure or flow is insufficient.
• The implement relief valve is stuck or damaged (except
3280-D Models 30344 and 30345).
Note: Steering circuit also affected.
• The flow control orifice in the lift control valve is plugged,
stuck, or damaged.
• The lift control valve is damaged.
• The lift cylinder leaks internally.
• The lift cylinder leaks internally.
• The lift circuit hydraulic lines or fittings are leaking.
• The lift control valve leaks (except 3280-D Models 30344
and 30345).
• Air exists in the lift circuit.
• The solenoid valve (SV2) in the lift control valve is damaged
or leaks.
• Engine RPM is too low.
• The hydraulic-fluid level in the reservoir (front axle) is low.
• The steering components (e.g., tie rods, steering cylinder
ends) are worn or binding.
• The steering cylinder is binding.
• The steering relief valve in the steering control valve is
stuck or damaged.
• The steering cylinder leaks internally.
• The implement relief valve is stuck or damaged (except
3280-D Models 30344 and 30345).
Note: Lift circuit also affected.
• The steering control valve is worn or damaged.
• The charge pump pressure or flow is low.
Note: Low charge pump flow or pressure will also affect the
lift circuit.
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Possible Causes
Possible Causes
Groundsmaster
05138SL Rev B
® 3280-D/3320