Toro Dingo 323 Operator's Manual page 30

Problem
Traction unit does not drive.
When at rest, loader arms creep
downward more than 3 inches per
hour (less than 3 inches an hour is
normal for this traction unit).
When at rest, loader arms settle
downward 2 inches quickly and
then stop.
Possible Causes
1. Tow-valves are open.
2. Hydro fluid level low.
3. Traction pump drive coupler is
loose or broken.
4. Pump and/or wheel motor is
defective or damaged.
5. Control valve is defective or
damaged.
6. Relief valve is defective or
damaged.
1. Valve spool leakage
1. Cylinder seals are leaking
30
Corrective Action
1. Close the tow-valves.
2. Add hydro fluid to reservoir.
3. Contact Service Dealer.
4. Contact Service Dealer.
5. Contact Service Dealer.
6. Contact Service Dealer.
1. Contact Service Dealer.
1. Replace seals.