ILP 25/33
8.2
Liftgate does not Lower Down
Visually check the valves at cylinders for mechanical damage such as bent or broken valves.
1.
Remove the cover at the hydraulic power unit and unplug the black cable (#2) with the inline fuse.
2.
Unplug cable #6 from toggle switch to both the two wire release valve harnesses.
3.
4. Connect female end #2 and male end #6 to energize release valves.
a. If gate lowers down :
b. If gate does not lower down:
- Check both release valves wires for any damage.
- Unscrew plugs of valves and stick a voltmeter into plugs and hit the down function.
c. Remove the plastic cap of the release valves – keep coil in place- hold a screwdriver close
to steel valve stem while pressing the down function on the toggle switch – if screwdriver
did not get magnetically pulled towards the valve, the coil is bad.
Power - #4 Green
Cable #6
Cable #2
30 Ft. x 2 ga.
Battery Cable
12V Power Supply
150 amp
Circuit Breaker
Rev.1.4
-
Check toggle switch harness and gray 3 wire harness for any damage.
Check each connection for voltage.
-If the voltmeter reads a voltage the cable is not damaged.
-If the voltmeter shows 0 volts, the cable is damaged.
Starter - #5 Red
Lower - #6 Yellow
Raise
OR
Down
Toggle Switch
Brown - Power
Blue - Load
Yellow/Green - Ground
Ground
Power
Starter
Solenoid
2-Button
Hand Held Remote
(Optional)
Piggy back with
Toggle Switch
Lower Valve(s)
at Cylinders
MBB Germany Cable # 3273863
Gray
3 Wire Harness
Brown - Power
Blue - Load
Brown - Power
Blue - Load
Yellow/Green - Ground
Spade Connectors
with housing
Owner's Manual
ON/OFF Switch
Trailer Installation
OR
Power
Load
Ground
ON/OFF Switch
Truck Installation
26
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