ILP 25/33
Owner’s Manual
Rev.1.4
26
8.2
Liftgate does not Lower Down
1.
Visually check the valves at cylinders for mechanical damage such as bent or broken valves.
2.
Remove the cover at the hydraulic power unit and unplug the black cable (#2) with the inline fuse.
3.
Unplug cable #6 from toggle switch to both the two wire release valve harnesses.
4. Connect
female end #2 and male end #6 to energize release valves.
a. If gate lowers down :
-
Check toggle switch harness and gray 3 wire harness for any damage.
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.
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.
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.
30 Ft. x 2 ga.
Battery Cable
150 amp
Circuit Breaker
12V Power Supply
MBB Germany Cable # 3273863
Spade Connectors
with housing
Yellow/Green - Ground
Brown - Power
Blue - Load
Brown - Power
Blue - Load
Yellow/Green - Ground
ON/OFF Switch
Truck Installation
P
o
w
e
r
-
#
4
-
B
lu
e
S
ta
rt
e
r
-
#
5
-
B
ro
w
n
L
o
w
e
r
-
#
6
-
Y
e
llo
w
/G
re
e
n
7
0
-0
3
1
2
-0
0
2
Y
e
llo
w
/G
re
e
n
-
G
ro
u
n
d
Toggle Switch
Power
Load
Ground
Lower Valve(s)
at Cylinders
Power - #4 Green
Lower - #6 Yellow
Starter - #5 Red
2-Button
Hand Held Remote
(Optional)
Piggy back with
Toggle Switch
ON/OFF Switch
Trailer Installation
Brown - Power
Blue - Load
OR
OR
Ground
Power
Starter
Solenoid
1
5
A
F
u
se
Cable #6
Cable #2
Gray
3 Wire Harness
Down
Raise
