Section 9
Troubleshooting
20425626
5-2005/Rev 0
9-3
S30 Troubleshooting Guide
Malfunction Indication Comments
The high and low limit
compensators on the
hydraulic pump are blocked
with debris and are not
controlling the swashplate
Disassemble the compensators,
clean and inspect the
components following the
maintenance procedure in
Section 6, Hydraulic System.
5.
No hydraulic oil pressure
Incorrect motor rotation Check the motor rotation.
6.
Pump shaft will not turn The flexible coupling has
failed
Replace the flexible coupling.
Hydraulic pump has seized Replace the hydraulic pump.
Emergency stop button is
depressed
Check all remote E-STOP
buttons.
7.
Pump will not start
Main power is disconnected Check the main power and
verify that the main power
disconnect is on.
Check the power supply circuit
for a tripped breaker.
8.
Pump quits running Electrical power has been
interrupted
Verify that power is available
at the main power source.