Lippert Components Hydraulic Slideout And Hydraulic Landing Gear (hlg) System - Manual (Page 23)

TROUBLESHOOTING – CHECKING FOR BAD CYLINDER
1. Retract (close) the slideout (room) completely.
2. Loosen hose from “E” (extend) port on the manifold of the Power Unit.
WARNING!
Do not attempt to run room out with the “E” port hose loose.
The system will experience RAPID FLUID LOSS.
3. Plug opening on manifold to prevent drawing air into the system.
4. Energize the Power Unit to retract (close) room.
5. Continue to run the room in and watch for fluid flow from hose/port
“E”. Fluid flow greater than a few drops will indicate internal cylinder
leaking (bypassing of piston seal). If there is no fluid flow, reconnect
hose to “E” port and tighten.
WARNING!
Be sure to reconnect and tighten hose at the “E” port before
attempting to extend (open) the room or the system will
experience RAPID FLUID LOSS.
Contact qualified technician if there is excessive fluid flow. The cylinder should
not be repaired in the field.
Refill the Power Unit Reservoir as recommended on Page 10 of this manual.
TROUBLESHOOTING – POWER UNIT
Before attempting to troubleshoot the Power Unit, make sure an adequate power
source is available. The unit batteries should be fully charged or the unit should
be plugged into to A/C service with batteries installed. Do not attempt to
troubleshoot the Power Unit without assuring a full 12V DC charge. The
following tests require only a DC voltmeter (or DC test light) and a jumper lead.
Step 1 - Attach voltmeter (or test light) leads to the negative and positive
terminals on motor solenoid (See Fig. 7). Does the meter indicate 12V DC?
If YES, see Step 2; if NO see Step 3.
Step 2 - If YES, at the motor, check the incoming leads to 12V DC (if necessary,
disconnect leads at wire splices). Does meter indicate 12V DC? If YES, Power
Unit needs to be replaced. The motor is not field serviceable. DO NOT
ATTEMPT TO REPAIR. If NO, Inspect all wires and connections between the
wall switch and the motor. Repair connections as necessary. Recheck as in
Step 1.
Step 3 - If NO, Inspect all connections between battery and solenoid. Inspect
30A Auto-reset Circuit Breaker (See Fig. 7 for location).
Recheck as above in Step 1.
Since there are no field serviceable parts in the motor of the Power Unit,
electrical troubleshooting and service is limited to replacing only those
components as previously outlined. Thorough inspection of wiring and
connections is the only other electrical service that can be performed.
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