Lippert Components Hydraulic Landing Gear - 14k Aluminum - Manual (Page 4)

FLUID FILLING PROCEDURE
The LIPPERT HYDRAULIC LANDING GEAR uses automatic transmission fluid (ATF). Any ATF can be used. A full synthetic or synthetic
blend works best such as Dexron III or Mercon 5. For best operation, fill system within ½” of the top when all slideouts are completely
retracted. The see through reservoir makes it easy to check oil level. It is recommended that the oil level be checked prior to operating the
system. Make sure the breather cap is free of contamination before removing, replacing or installing.In colder temperatures (less than 10°
F) the jacks may extend and retract slowly due to the fluid’s molecular nature. For cold weather operation, fluid speciallyformulated for low
temperatures may be desirable. Please consult factory before using any other fluids.
FILLING DIRECTIONS
NOTE: Be sure landing gear are fully retracted prior to filling reservoir to prevent over-filling.
1. Remove Breather/Fill Cap
2. Pour ATF into Breather/Fill opening.
NOTE: Do not allow any contamination into reservoir during fill process.
NOTE: Standard reservoir holds approximately 2 quarts (1.89 liters) of ATF.
3. Fill to within ½” of top.
4. Replace Breather/Fill cap when finished.
NOTE: System is self-purging. By simply cycling the system 2-3 times, any air in the system will be forced back to the reservoir and
out of the Breather/Fill cap.
Fill Cap
TROUBLESHOOTING
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
Leg valve is inoperative Clean, repair or replace
Electronic signal is lost between switch and leg valves Trace wires for voltage drop or loss of signal
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 and solenoid Attempt to retract jacks in MANUAL mode, if successful, replace
control pad; if not, test voltage drop between switch and leg valve
Repair bad wiring or replace defective board or valve.
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.
NOTE: 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.
NOTE: Thorough inspection of wiring and connections is the only other electrical service that can be performed.
IF YOU HAVE ANY PROBLEMS OR QUESTIONS CONSULT YOUR
LOCAL AUTHORIZED DEALER OR CONTACT LIPPERT:
Ph. - (574)537-8900 Fax- (573)534-7161 Email - [email protected]