Troubleshooting - Toro 22420 Operator's Manual

Troubleshooting

Problem
The bore drive head does not rotate.
Possible Cause
The hydraulic coupler is not completely
connected
A hydraulic coupler is damaged.
There is an obstruction in a hydraulic hose.
A hydraulic hose is kinked.
The auxiliary valve on the traction unit is
not opening.
A hydraulic motor is damaged or worn.
9
Corrective Action
Check and tighten all couplers.
Check the couplers and replace any that
are damaged.
Find and remove the obstruction.
Replace the kinked hose.
Repair the valve.
Replace or repair the motor.