I have an Evergreen 37' bunkhouse trailer with Lippert stabilizer jacks. While we were getting the rig ready for our summer trip we noticed that the forward jack did not run at all. Troubleshooting revealed that the motor was burned out. This happened because the control switch is located in the outside storage compartment. Apparently, the load in the compartment shifted and jammed the switch in the Retract position (the switch was actually damaged), probably while in motion. Fortunately, it jammed in Retract and not Extend! I would hate to think about what would happen if that came down while in motion.
Replacing this motor is not cheap, with prices as high as $360 (plus another $40 for a new switch). I found a motor on Ebay for $200 (lippert motor | eBay
). While the mechanism is from Lippert the motor is a Klauber C-800. I also put a simple $3 outdoor switch cover over the new switch to prevent this from happening again. Also, the new switch is fused at 15A to protect the motor (neither jack motor is fused).
I regard the issue to be a safety hazard. I sent Evergreen an email, but got no response. After hearing that they have closed operations I know why. I submitted a complaint to NHTSA (National Highway Traffic Safety Administration). They are also a good resource to find issues with your current rig or one you are considering buying (I found that Keystone had installed hundreds of axles backwards this way).