ILSL 33/44 Owner‘s Manual
Rev.1.1
27
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.
4. Check the fuse(s) at the control board and battery.
The control board inside the hydraulic power unit box has two 15 Amp fuses and at the batteries
there should be a 20 Amp fuse. Check all fuse holders for blown fuse(s) and replace each blown
fuse with the same amperage.
DO NOT use higher amperage fuse.
Hydraulic
Power
Unit
Control
Board
(Inside)
Fuse Holders
on Control
Board
Replace when
metal bridge is
broken
In-Line ATC Fuse 15 Amp at Control Board.
Replace with same amperage fuse when necessary.
In-Line ATC Fuse: 20 Amp at Battery.
Replace with same amperage fuse when necessary.
NOTICE: DO NOT attempt to jump in-line fuses 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.
5. Is the connection to ground in power pack OK?
Is the ground connection from the tail lift to vehicle OK?
6. Check the oil level in the Hydraulic Power Unit.
The Hydraulic Power Unit is located inside the mount tube. To access the oil reservoir, remove the
screw and slide out the Power Unit until there’s access to the oil reservoir. Check the oil level is
between the 5 and 7 level.
