Product Manual

Rev. O 9
Symptoms
Possible Cause
Correction
Special Notes
System Inoperative
Dead or Low Battery
Load test battery
Charge or replace battery
Poor Ground
Ground battery directly to DC
motor
Use jumper cables to jump
ground only
Dirty Contacts in Hand Control
Clean contact in hand control
with eraser
Cleaning contacts with
abrasive will cause frequent
failure
Corrosion on Battery
Terminals
Inspect battery cables & clean
battery terminals
Use of dielectric grease will
prevent corrosion buildup
Start Solenoid Failure
Jump Start Solenoid
Replace Solenoid
Rust in DC Motor Bypass Start Solenoid
If motor doesn't run after
bypassing start solenoid,
remove rear cover of motor
for quick inspection.
Symptoms
Possible Cause
Correction
Special Notes
Motor Runs Load Not or
Cylinder not Extending
Low Battery/ Poor Ground
Load test battery
Charge or replace battery
**Bad diode in hand control
Remove coil from directional
valve & operate unit. Only 1
valve coil should operate at a
time.
Replace diodes inside hand
control if 2 coils are
operating when pressing up
or down button.
Dirty Contacts in Hand Control
Clean contact in hand control
with eraser
Cleaning contacts with
abrasive will cause frequent
failure
**Directional Valve Issue
Check for bent valve stem
Replace valve if stem is
bent
Ensure coil is energizing
Double check you are
getting power to coil before
replacing
Remove valve and inspect
o-rings
Replace o-rings if damaged
Check cross drilled holes
between o-rings of valve for
debris
Replace valve if spool is not
shifting
(for most directional valves