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Troubleshooting Guide
Hydraulic Problems
Troubleshooting Guide
HDSdoc030722
4-7
4
4.4
Hydraulic Problems
PROBLEM
CAUSE
SOLUTION
You Can Actuate Any
Hydraulic Handle, But Get No
Response From The Pump.
Carriage not positioned
properly to provide power to
the pump
Make sure carriage contact
bracket is adjusted far enough
forward for battery positive
contact to touch 6ft. strip on
main tube. Check contact and
strip for tarnish or loose wires.
Clean as necessary
Hydraulic feeder does not
work
Turn on the power switch on
the front side of the electric
box mounted on the front side
of the hydraulic box. Check
whether the power is on (in
position “1”).
Check whether the key switch
is in ACC position
Disconnect the plug on the left
side of the electric box and
change the phases using a
screwdriver
Check whether the
emergency switch is off
One phase lacks power
Check fuses in the electric
connector
Pump motor relay damaged
Have a qualified electrician
change it
Hydraulic pump motor is
overheated
Let the motor cool. When the
motor is off, reset the thermal
motor breaker located in the
electric box monted in the
hydraulic box.
The hydraulic feeder works
despite the release of the
hydraulic control lever
Standard situation.
Hydraulic feeder assembly
should keep working for 5-8
seconds after the hydraulic
lever is released (in the
neutral position)
Poor ground connection
Check ground connection
between pump and saw
frame. Check contact and rail
for tarnish or loose wires.
Clean as necessary.
Blown fuse
Replace
Defective pump motor
Remove motor from pump
and inspect. Repair or replace
as necessary.