Case study
Third Schwintek failure on a fifth wheel traced to room geometry, not the drive
The off door side room had eaten two vertical gear racks and a motor pair in 26 months. Two prior shops replaced the racks and reset the controller, and the failure returned within a season each time. The room was binding on one side because the floor at the front corner had taken water from a failed window reseal and dropped roughly 6 millimeters.
Vehicle
36 foot fifth wheel, Lippert frame, two in wall slide rooms
Price band
$750 to $7,500
Calendar time
3 business days to 2 weeks
Operations
What the job actually consisted of
- RV systems evaluation, room cycled under power through full travel with the controller read
- Moisture readings taken on a grid across the slide floor and the adjacent sidewall
- Window frame pulled, butyl bedding renewed, and the failed reseal corrected at the source
- Slide floor section replaced, framing scarfed, and the room shimmed back to square
- New Lippert vertical gear racks and motor pair installed on the corrected geometry
- Controller taken through its full learn routine, then cycled twenty times under observation
- Wiper and bulb seals renewed on all four edges after the room was square
Outcome
How it ended
The mechanism stopped failing because the load that was destroying it was removed. The owner had been quoted a conversion to a through frame hydraulic system by another shop, which would have cost roughly three times this repair and would not have addressed the water path that caused the problem.
More
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Is your vehicle in the same situation
Match on construction type and failure mode, not on the badge. We are 18.4 miles from Hacienda Heights via SR-60 west to Fullerton Rd, then south to La Palma Ave.