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Built by Thor Industries

Keystone Repair For Lake Forest Owners

Keystone RV is the largest towable manufacturer in the country and a Thor Industries company, building Montana, Cougar, Fuzion and a long list of other nameplates. Keystone work at OCRV Center is mostly fifth wheel structure, because the tall front caps and long overhangs on these units concentrate damage in predictable places.

What we see on Keystone units

Patterns specific to how this manufacturer builds, rather than generic RV advice.

01

Mixed slide hardware on one coach confuses diagnosis

On a Montana or an Alpine it is normal to find a hydraulic ram driving the main room and an electric in wall drive on the bedroom, and the two fail in opposite ways. A hydraulic room that stops short is usually a fluid, valve or pinched hose problem. An electric room that stops short is usually a mechanical alignment problem. Owners describe both as the slide not working, and a shop that assumes one system across the coach spends its first day looking in the wrong compartment. We identify the actuator type on every room at intake.

02

Belt line bond release on laminated Cougar and Laredo sidewalls

The horizontal seam where the upper and lower sidewall panels meet is the last place adhesive is applied and the first place it lets go, especially on the sun facing side after a few Southern California summers. It shows as a long shallow ripple that you only see in raking light, and pressing it gives a soft, hollow response. Injecting adhesive through the skin is a common quick fix that traps air and leaves a permanent visible line. We open the seam from a trim edge, clean the failed bond, and re press the panel under clamp pressure across its full length.

03

Front cap crazing above the pin box on Cougar Half-Ton

The tall front face of a half ton fifth wheel sits directly in the airstream coming off the tow vehicle roof, and it catches every stone that the truck kicks up. What builds over years is a field of shallow star cracks in the gelcoat centred a foot or two above the pin box. They look cosmetic and they are moisture entry points, because each star reaches the mat below. Sanding and clearing them is a temporary cover. The affected area gets ground out, rebuilt with mat and resin, and refinished as a panel so the repair does not read as a patch.

04

Fuel station and garage plumbing leaks on Fuzion and Raptor

The onboard fuel station puts a tank, a pump and a run of fuel line inside a sealed garage compartment on a vehicle that flexes constantly. Fittings loosen, and because the garage floor is sealed the fuel and the fumes have nowhere to go but into the living space. Owners often smell it long before they find it. Any collision work on a toy hauler with a fuel station at OCRV Center includes pressure checking that circuit, because a rear impact that moved the frame almost certainly moved the tank straps too.

05

Landing gear mount distortion after an uneven drop

Setting a Keystone fifth wheel down on soft or sloped ground puts an off axis load through the landing gear legs and into the mounting plates welded to the frame rails. The legs still work, so nobody thinks anything happened, but the plates have pulled and the front of the trailer no longer sits level side to side. That shows up months later as a front slide that binds or a front cap seam that starts weeping. We check landing gear plate geometry on every fifth wheel that comes in with a front end complaint.

Models we take in

Work commonly done on these

Service

RV Collision Repair

Impact damage repair on motorhomes, trailers and vans, from documented teardown through structural rebuild, panel replacement and refinish.

Service

RV Fiberglass Repair

Laminate rebuild for cracked, punctured or spidered fiberglass on caps, sidewalls and compartment doors, followed by fairing and refinish.

Service

Delamination Repair

Rebonding of separated sidewall and roof skins by injection or open repair, including core replacement where the substrate has failed.

Service

Full RV Paint and Refinish

Complete exterior refinish of a coach or commercial body, from substrate preparation through primer, color and clear in a single continuous pass.

Service

Roof Repair and Replacement

Membrane, fiberglass and aluminum roof repair, resealing, recoating and full replacement, including decking repair and every rooftop penetration.

Service

Slide Out Repair

Diagnosis and repair of slide room drive systems, controllers, motors, rails and structure, across the four mechanisms in common service.

Service

Water Intrusion and Leak Repair

Leak source tracing, moisture mapping, controlled water testing, and structural rebuild of framing, decking and panels that water has reached.

Service

RV Body Panel Repair

Repair and replacement of exterior panels, compartment doors, skirts, moldings and trim on RVs, trailers and commercial bodies.

Service

Full Interior Remodel

Complete teardown and rebuild of an RV living space, sequenced in reverse of how the coach was originally assembled and weighed against cargo capacity.

Keystone builds we cover: Standard Fifth Wheels, Toy Hauler Fifth Wheels, Travel Trailers.

OCRV Center is an independent collision, paint and body repair facility in Yorba Linda, California. We are not an authorized dealer for, and we are not affiliated with, sponsored by or endorsed by, any recreational vehicle, chassis, bus or trailer manufacturer. Manufacturer names, model names and logos are the property of their respective owners and appear on this site only to identify the vehicles we repair. Every repair is performed at our shop.

Bring it to the shop from Lake Forest

Collision, paint, fiberglass, roof, slide and systems work, all performed at the Yorba Linda facility. Tell us the vehicle and what happened and we will schedule intake.

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