Built for reliability, the ILP liftgate keeps you moving. Supported by an expert service network and technical team, your equipment stays in top shape. Featuring corrosion-protected pins, greaseable bushings, thermo-switch motors, and heavy-duty solenoids, it delivers durability and performance you can trust.
Manuals
Download the official manuals for your liftgate model. Each guide includes installation steps, operating instructions, maintenance schedules, and troubleshooting tips.
Troubleshooting
Keeping your equipment up and on the road is priority number one. When using our troubleshooting guide, assisted by our dedicated technical service team, you can feel confident that your liftgate will be repaired correctly and in a timely manner.
NOTE: Always use a digital voltmeter when checking voltage to determine if you have sufficient power to operate the liftgate.
Step-By-Step
First Step
- Check for the cab on/off switch for activation of the liftgate or the on/off switch on the side of the auxiliary battery box if a trailer application
- 150 Amp Circuit breaker at the positive post of the battery
▶ Push the tab back in if it popped out
▶ Check the reason for the high amp draw
- Dead battery?
- Worn out brushes?
- Bad ground connection?
- Direct short?
150A circuit breaker mounted on the wall inside of battery box if trailer application
- 15 amp ATC fuse (red) connected to the motor solenoid
▶ Replace the fuse if the metal bar is burned
- Check the cab on/off switch wire and control switch wire for pinched areas or broken wires
- Check for a tight solid ground connection from the motor ground post to the box of the hydraulic power unit
- Check for broken power wire in the solenoid cable:
▶ Unplug the connector at the valve, and stick the voltmeter in the plug
▶ Ground voltmeter (or test light) on the ground post at the motor and activate the down function on the gate
▶ Check each hole; one will light up if the power line is ok
- Start the truck and run the engine at a fast idle to charge the battery
▶ If the liftgate starts working, recharge the battery
▶ Test the battery and/or truck/trailer charging system
The Gate is Not Lowering Down
One or both release valves on lift cylinders are not opening up
- Normally closed valves to prevent lowering gate in case of a failure
- Check coils for resistance
- Voltmeter shows 5.5 to 7.0 Ω ▶ Coil is good
- Voltmeter shows 0 Ω ▶ Coil is shorted out
- Voltmeter shows Overload ▶ Coil is destroyed by burn or physical damage
Find Support When You Need It
Need assistance? Our Technical Service Team is here to support you every step of the way. Whether you’re installing a new liftgate, troubleshooting an issue, or performing routine maintenance, we provide expert guidance to keep your equipment operating at peak performance.
You can reach us by phone or email during business hours for immediate assistance.
We’re committed to minimizing downtime and ensuring your liftgate delivers reliable service for years to come.
