Troubleshooting
Hydraulic Problems
Troubleshooting
HDSdoc021716
4-6
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 drive signal to the hydraulic
control
Make sure carriage contact bracket is adjusted
far enough forward for battery positive contact
to touch strip on main tube. Check contact and
strip for tarnish or loose wires. Clean as
necessary
Poor ground connection.
Check negative contact and lower rail. Check
contact and rail for tarnish or loose wires. Clean
as neccesary.
Circuit breaker tripped
Reset breaker.
Defective pump motor
Replace
Poor cable connection
Check cable connection.
Defective motor pump contactor
Replace
You Can Get Response From
the Pump By Actuating All
But One or Two Handles
Valve assembly switch contacts are
not properly adjusted
Locate the valve switch at the bottom of the
valve assembly. Use a 3MM allen wrench to
loosen the set screw on each of the five switch
contacts. Press each contact to the valve block
and tighten the contact set screw to secure in
place.
CAUTION!
Do not overtighten!
NOTE:
Do not adjust the valve switch or switch
spring; they have been preset at the factory.
