Lippert Components Hydraulic Slideout And Hydraulic Landing Gear (hlg) System - Manual (Page 22)

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TROUBLESHOOTING CHART - SLIDEOUT
The following troubleshooting chart outlines some common problems, their causes and possible
corrective actions. When reference is made to a “Power Unit,” the term includes the motor and
the actuator as a complete unit. All Power Units are shipped from the factory with a serial number
and date code, which should be given to the service technician when asking for assistance.
ROOM DOESN’T MOVE WHEN SWITCH IS PRESSED
PROBABLE CAUSE CORRECTIVE ACTION
Restrictions both inside and outside of unit Check for and clear restriction
Low battery voltage, blown fuse, defective wiring Check battery. Charge battery or add auxiliary
power source. Check battery terminals, and all
other wiring. Look for loose or corroded
connections
Power Unit not functioning See “Power Unit Troubleshooting” page 22
POWER UNIT RUNS, ROOM DOES NOT MOVE
Restrictions both inside and outside of unit Check for and clear restriction
POWER UNIT RUNS, ROOM MOVES SLOWLY
Low battery, poor ground, extremely low Charge battery, and check ground wire
outdoor temperature.
Leaking cylinder See “Checking for Bad Cylinder” page 22
ROOM DRIFTS IN BOTH IN & OUT POSITIONS
Check for leaks in the hydraulic system Tighten fittings
Air in system After checking all connections, cycle pump
several times in and out
IN THE CLOSED POSITION, ROOM DRIFTS OUT
Leaking cylinder seal See “Checking for Bad Cylinder” page 22
Fluid bypassing cylinder piston See “Checking for Bad Cylinder” page 22
Hose from pump is leaking Tighten fitting or replace hose
Air in system After checking all connections, cycle pump
several times in and out
Loose mounting bolts Tighten mounting bolts
IN THE OPEN POSITION, ROOM DRIFTS IN
Hose from pump is leaking Tighten fitting or replace hose
Leaking cylinder seal See “Checking for Bad Cylinder” page 22
Fluid bypassing cylinder piston See “Checking for Bad Cylinder” page 22
TROUBLESHOOTING CHART - HLG
JACKS WILL NOT EXTEND TO GROUND, PUMP IS RUNNING
PROBABLE CAUSE CORRECTIVE ACTION
Little or no fluid in reservoir Fill reservoir with DEXRON III ATF, See pg. 14
Leg valve is inoperative Clean, repair or replace
Electronic signal is lost between switch Trace wires for voltage drop or loss of signal
and leg valves Repair or replace necessary wires or replace
switch.
ANY ONE OR TWO JACKS WILL NOT RETRACT
PROBABLE CAUSE CORRECTIVE ACTION
Hose damaged or unconnected Replace with new hose or reconnect hose
Return valve inoperative Replace inoperative return valve
Electronic signal is lost between switch Attempt to retract jacks in MANUAL mode.
and solenoid If successful, replace control pad; if not,
test for voltage drop between switch and
leg valve Repair bad wiring or replace
defective board or valve.