The Top Three
Once you get the insert installed and operating, there are a few common maintenance items to watch for. Don't worry--taking care of these minor issues is relatively easy.
Rattles
If you don't take care of debris stuck in pivot or resting mount areas, the noise of the dump insert rattling around in your pickup bed is guaranteed to drive you crazy. The best way to stay sane: Keep the area under the bed clean, so the insert lays evenly on its stops.
The hydraulic rams aren't impervious to wood chips, rocks, or other non-compressible items. These can get wedged underneath the ram pivot, limiting motion. Inspect this area regularly and clean it out immediately, before the ram gets damaged.
Purging
Every year, bleed the air out of the hydraulic system that forces the ram up, so it can provide maximum lifting force. The manufacturer's installation and operating instructions address this fairly painless process.