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. A dead slide can be anything from a fuse to a $2,500 mechanism rebuild, so we will not put a price on one over the phone before we have seen which kind you own.

The three systems

Schwintek in-wall. Each side of the slide box rides a vertical gear track with its own motor, and one controller runs the pair. You see it most on the smaller and mid-size slides, travel trailers especially. 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. Resyncing it is a known, reliable procedure; what runs up the bill is ignoring the crooked slide until the tracks chew.

Rack and pinion, usually one drive motor turning a flat gear rack that runs 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. Found mostly on big slides and Class A coaches, this kind pushes the room with rams fed by a pump through valves and hoses. When it quits, look at the fluid level, a weeping ram or hose, a valve that sticks, or a tired pump. 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 the pricing page, plus the $75 to $150 trip fee and $125 to $190 hourly labor.

Power first, always

When a slide refuses to budge, we check battery voltage under load before we suspect any of the hardware above. 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. Have the seals done 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. Getting that grit out and putting on the lubricant your system calls for (some want dry lube, some want grease) costs little, yet almost nobody around the resorts does it. 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.

Let a binding slide be. The moment it stalls, take your finger off the switch. Keep driving the motor into a jammed mechanism and a $500 motor replacement turns into a $2,000 gear repair.

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

All three kinds have an override, and spending ten minutes locating yours on a calm afternoon beats hunting for it in a storm. On a Schwintek it is a hex extension that fits the motor head. On rack and pinion there is a crank point, most often under the rig. On hydraulic slides it is 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. Your owner’s manual shows where yours is.

Slide repairs happen 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.