# Schwintek Slide Repair: Cost, Hours and Process in Hacienda Heights Schwintek slide repair addresses the Lippert In-Wall system: two vertical drive columns inside the sidewall, each with its own motor and toothed gear track, synchronized by a controller. It is the most complained about slide design in the industry because the wall cavity limits how much load the gear track can carry. ## Specifications - Price band: $750 to $7,500 - Shop hours: 4 to 30 hours - Turnaround tier: Systems and electrical - Insurance billable: no - Parts lead time: Gear tracks, motors and bearing blocks commonly 5 to 15 business days, controller modules and harnesses 10 to 25 business days - OEM brands: Schwintek, Lippert, Power Gear, Solera, Dometic ## What the In-Wall system is, and the constraint that defines it The Lippert In-Wall Slide-Out, universally called Schwintek after the engineer whose design Lippert acquired, drives a room from its two vertical edges instead of from underneath. Each edge carries a steel guide rail, a toothed gear track, bearing blocks that hold the room square, and its own 12 volt motor with an integral gearbox. A controller module runs both motors and keeps them together. The reason it exists is packaging, and the packaging benefit is real. With no rail under the floor, the room floor sits flush with the coach floor, there is no rail to protect from road spray, and the space beneath the opening stays available for tanks, frame rails and basement storage. That is why it appears on so many towables built in the last fifteen years, and it is genuinely the right answer on a light room. The constraint is equally real and it follows from the same geometry. The entire mechanism has to fit inside a sidewall cavity that is a couple of inches thick. That ceiling on available depth limits the gear face width, the rail section and the bearing area, which limits how much load the system can carry. Lippert publishes a room weight ceiling for the In-Wall system and it sits in the low four figures, well under what a below floor rack and pinion rail handles. Everything owners complain about downstream is that constraint expressing itself. A room within the envelope, kept square, on level ground, gives years of service. A room at or over the envelope, especially a long bedroom slide or a room carrying a heavy appliance, is asking a two inch deep mechanism to do a job that was specified for less. - Two independent motors, one per vertical column, electronically synchronized - Toothed gear track per column, the designed wear item in the system - Bearing blocks that hold the room square in the wall cavity - A controller module that counts travel on each motor and matches them - A wall cavity depth of roughly two inches, which caps gear face width and load capacity ## The failure sequence, in the order it actually happens This is the part worth reading closely, because owners usually enter the sequence at step four and treat that as the beginning. It starts at the gear track. The track teeth are the designed sacrificial element, and under side load, or with a room slightly out of square, or on a coach that gets extended on a cross slope, the teeth on one column begin to shave rather than mesh cleanly. Once a few teeth are rounded, that column intermittently skips. A skip is a few thousandths of lost travel, and by itself it is invisible. But the controller is counting travel on each motor and matching them, so it now sees a differential building between the two columns. It responds by slowing or stopping the leading motor to let the other catch up, which is the stutter and chatter owners describe. When the differential exceeds what the controller can correct, it faults and stops. The room is now sitting racked in its opening: one end farther out than the other, in a hole with a quarter inch of margin. That racked geometry shears the wiper seals, admits water, and loads the bearing blocks and the remaining good teeth harder than either was specified for. The sequence accelerates from here. The end of the line is one of three parts. The gear track loses enough teeth to stop driving at all. The motor gearbox fails from repeated peak load, usually the one on the column that was doing the extra work. Or the controller itself goes, most often after a period of driving stalled motors. All three are treatable. None of them is the actual cause, which was the tooth wear four steps earlier. - Tooth shaving on one gear track under side load or with the room out of square - Intermittent tooth skip, a few thousandths of lost travel per event - Travel differential accumulating between the two columns - Controller correction attempts, felt as stutter, chatter or a pause mid travel - Controller fault and stop, leaving the room racked in the opening - Seal shear, water intrusion and accelerated wear on the remaining teeth - Terminal failure at the gear track, the motor gearbox or the controller module ## Fault codes, the sync procedure, and what a sync cannot fix The controller reports through a flash code on its LED, and the codes distinguish meaningfully different conditions: an overcurrent stall on a named motor, a lost or implausible travel count from one motor, an open or shorted motor circuit, and a supply voltage below the module's operating range. Reading the code before touching anything is worth real time, because a low voltage code and a stall code lead to completely different work. The sync procedure exists because the controller's travel counts are relative rather than absolute. Retracting fully and holding the switch in the retract position for several seconds past the point where the room stops drives both columns hard against their inboard stops and zeroes both counters at a known reference. On a healthy system that restores correct operation, and it is the first thing to try. What a sync cannot do is put teeth back on a gear track. If the underlying condition is tooth wear, the sync restores the reference, the column skips again on the next few cycles, and the differential rebuilds. Owners describe this precisely: it syncs, it works for a couple of weeks, it goes out again. That pattern is diagnostic in itself and it means the track is the job. So our sequence is code first, voltage at the motors under load second, sync third, and physical inspection of both tracks and both sets of bearing blocks with the room extended fourth. Any shop that goes straight to a sync and hands the coach back has sold you two weeks. That is why this leaf carries the in depth diagnostic at one hour of $285, credited against an authorized repair. ## When conversion beats another gear track, and what each path costs Here is the honest answer owners rarely get. If your room is inside the weight envelope and this is the first gear track, repair it. Tracks, motors and bearing blocks are available, the labor is bounded, and a properly squared In-Wall room with fresh tracks gives years of normal service. Repair labor bills at the mechanical and electrical rate of $260 per hour across roughly four to thirty hours, with tracks and motors commonly 5 to 15 business days and controllers 10 to 25. If your room is at or over the envelope and this is the second or third set of tracks, stop buying tracks and price the alternative. That room is not failing because of bad luck or bad parts. It is failing because a two inch deep mechanism is carrying a load that a below floor rail was designed for, and the next set of tracks will wear on the same schedule as the last two. Conversion to a through frame rack and pinion system is the durable answer in that case, and it is a structural job rather than a mechanism job. It means a below floor rail mounted to chassis crossmembers, new mounting points in the room deck, a reworked sill at the opening, and interior flooring disturbed for access. It is not feasible on every coach: where tanks, a frame rail, a basement compartment or a wet bay sit directly under the opening, there is nowhere for the rail to go, and we will tell you that before quoting rather than after starting. So the decision comes down to three numbers we can actually put in front of you: the cost of this repair, the realistic interval before the next one given your room weight and how you camp, and the cost of a conversion if your floorplan allows one. Some owners rationally choose to treat gear tracks as a three to five year wear item and budget for it. Others convert once and stop thinking about it. What we will not do is quietly sell you the third set of tracks for a room that was never going to hold them. ## Not included - We do not perform a sync procedure as a standalone visit on a room with worn gear tracks. Syncing a room whose teeth are gone is a temporary result and we will say so rather than sell it. - Conversion of an In-Wall room to a below floor rail system is not possible on every floorplan, and we will not quote one before confirming what sits under the opening. - Sidewall laminate damage caused by a racked room is fiberglass work and it is quoted under the fiberglass program. ## Questions **Why does my Schwintek slide keep losing sync after it gets fixed?** Because syncing restores the controller's travel reference and does nothing about worn gear track teeth. A column with rounded teeth skips a few thousandths per cycle, the differential rebuilds, and the controller faults again. The pattern of syncing fine and failing two weeks later is itself the diagnosis: the track is worn and the track is the repair. **Is the In-Wall design actually a bad system, or is that reputation unfair?** It is a good design used outside its envelope. On a light room it packages beautifully, keeps the floor flush and leaves the space under the opening usable. The problem is that a mechanism living in a two inch wall cavity has a real load ceiling, and it got fitted to long bedroom rooms and rooms carrying heavy appliances. The complaints track room weight far more closely than they track build year. **What do the flashing lights on the controller module tell you?** The flash code separates conditions that need different work: an overcurrent stall on a specific motor, an implausible travel count from one column, an open or shorted motor circuit, and supply voltage below the module's operating range. A low voltage code points at batteries, grounds and connections. A stall code points at drag or a track. Reading it first prevents a lot of wrong parts. **Can my In-Wall room be converted to a rail system under the floor?** Sometimes, and it is the durable answer for a heavy room that has eaten multiple gear tracks. It is a structural job: a below floor rail on chassis crossmembers, new deck mounting points, a reworked sill and interior flooring pulled for access. It is not possible where tanks, a frame rail or a wet bay sit under the opening, so we confirm what is under there before quoting anything. **How long should a set of gear tracks last?** On a room inside the weight envelope, kept square and extended on level ground, tracks are a long life item and many owners never replace one. On a heavy room, or one habitually extended on a cross slope, three to five years is a realistic interval. The two variables that matter most are room weight and whether the coach is level at every extension, and only one of those is under your control. --- Source: https://ocrv.club/rv-slide-out-repair/schwintek-slide-repair OCRV Center, 23281 La Palma Ave, Yorba Linda, CA 92887 Phone (949) 799-3387. Email info@ocrvcenter.com. Serving Hacienda Heights and the surrounding area. 18.4 miles, 24 to 38 minutes via SR-60 west to Fullerton Rd, then south to La Palma Ave. In shop work only. All estimates are priced and credited against an authorized repair.