ILP 25/33
Owner’s Manual
Rev.1.4
25
3. Are the vehicle batteries charged?
Check batteries and the truck/trailer charging system. Start truck and run engine in fast idle for
charging the batteries. If liftgate starts working, recharge and load test batteries. Measure battery
voltages: Flooded Batteries = 12.6V; AGM Batteries = 12.8V
4. Check the fuse(s) at the hydraulic power unit.
The Hydraulic Power Unit has a 15A fuse attached to the solenoid. Check for burned fuse and
replace with the same amperage fuse, if necessary,
Fig.22
.
DO NOT use higher amperage fuse.
Fuse Holders
on Solenoid
Replace when
metal bridge is
broken
In-Line ATC Fuse 15 Amp at solenoid.
Replace with same amperage fuse when necessary.
NOTICE: DO NOT attempt to jump in-line fuse(s) with other objects other than the specified fuse(s).
DO NOT increase the amperage rating of fuse. Serious harm to the liftgate will result when
standard practices are not followed.
Solenoid
5. Is the connection to ground on hydraulic power unit OK?
Is the ground connection from the liftgate to vehicle properly grounded?
6. Check the oil level in the hydraulic power unit.
The power unit is located inside the enclosure mounted on the mount frame. To access the oil
reservoir, remove the enclosure cover.
The oil must be 1” down from the top of the reservoir.
7. Are there any damages on mechanical or electrical parts (such as damaged cables)?
Perform a visual inspection of all electrical wiring and mechanical components.
Fig.22
