Lippert and Schwintek slide-outs: how each system fails and what it costs

Almost every slide-out in Highlands County is one of three systems, and knowing which you have changes the diagnosis, the parts, and the price. The whole range runs from a fuse to a $2,500 mechanism rebuild, which is why nobody should quote a slide repair over the phone without knowing what they are looking at.

The three systems

Schwintek in-wall. Vertical gear tracks on the left and right edges of the slide, driven by a motor at each side, controlled together. Common on smaller and mid-size slides, particularly in travel trailers. Light, compact, and its characteristic failure is losing synchronization: one motor leads, the slide goes crooked, it binds, and if it keeps being run in that state the gear tracks suffer. Resync procedures exist and work; the damage from ignoring the symptom is what costs money.

Rack and pinion, often with a single drive motor and a horizontal gear rack under the slide floor. Robust, simple, and its failure modes are the motor, the gearbox, a sheared drive pin, or a rack that has corroded. Humidity is the issue here: a steel rack under a slide floor that stays wet all summer rusts, the rust is abrasive, and the motor works harder against it.

Hydraulic. A pump, valves, hoses, and rams, typically on larger slides and Class A coaches. Failures are fluid level, a leaking ram or hose, a stuck valve, or the pump itself. Hydraulic systems are strong and smooth and they do leak, and a slow leak usually announces itself as a slide that creeps in overnight.

How each fails, and what it costs

These are the published ranges on our pricing page, plus the $75 to $150 trip fee and $125 to $190 hourly labor.

Power first, always

Before any of the above, the first check on a slide that will not move is battery voltage under load. Slide motors draw heavily, and a bank sitting at 11.8 volts after a Florida summer on a converter with no float mode will not turn one. A meaningful share of slide calls in November are batteries, not mechanisms, and diagnosing in that order saves people a great deal of money. The slide will not move page walks through the ten-minute check, and the batteries page explains why the bank is flat.

The seals are the other half

On a rig in Highlands County the mechanism is often fine and the seals are the problem. Wiper and bulb seals are rubber, and from late April to mid-November the shaded side of a slide never dries. The seals mildew, curl, and flatten, water gets past them into the slide floor, and the floor swells. A swollen floor binds in the opening, the motor stalls, and now the mechanism is the problem too. The slide leaking when it rains page covers it. We do the seals while the slide is out for any mechanical work, because a slide with a rebuilt mechanism and dead seals is back on the list by September.

The maintenance that makes them last here

Clean and lubricate the mechanism. A gear rack or a Schwintek track that has spent a wet summer under a slide has corrosion and grit in it. Cleaning it out and applying the correct lubricant for your system, dry lube on some, grease on others, is cheap and almost never done. The wrong lubricant holds moisture and makes it worse, which is why “what do I spray on it” is a question worth asking rather than guessing.

Do not fight a binding slide. If it stalls, stop. Running a motor against a bound mechanism is how a $500 motor job becomes a $2,000 gear job.

Run it monthly, even in storage if you can. Mechanisms that sit through a humid summer seize; mechanisms that move stay free.

Condition the seals with a product made for rubber, in April and again mid-summer. Not silicone spray.

Check the topper. A slide topper that pools water is dumping it into the room on every retract and holding it against the top seal in between.

Know your manual override

Every one of these systems has one, and finding it before you need it is worth ten minutes. Schwintek uses a hex extension into the motor head. Rack-and-pinion systems have a crank access point, usually underneath. Hydraulic systems have a bypass at the pump. It is slow work and it is not a repair, but it will get a rig road-legal on a Saturday. Call and we will talk you through yours.

We work on site at resort sites, fish camps, storage lots, and driveways across Sebring, Avon Park, Lake Placid, Lorida, Frostproof, Wauchula, and Okeechobee. The slide-out repair service page covers how a visit goes.