Bucket Trucks and Aerial Lifts Repair for West Covina

Outrigger pads, outrigger boxes and the subframe that carries them

Outriggers are the part of a bucket truck a body shop sees most. The pad itself takes abuse from being set on broken asphalt, curbs and trench plates, but the damage that matters sits above it. The outrigger box is a welded steel assembly tied into the subframe, and repeated setting on uneven ground works that box in torsion. Cracks start at the weld toe where the box meets the subframe rail and run along the fillet long before anything looks visibly bent.

We repair that as structure. The cracked section is cut out rather than plated over, the weld preparation is opened up so new material carries load through the full section, and a doubler goes in where the original design is marginal for how the truck is actually being used. Pad mounting ears that have elongated get rebuilt with new stock instead of being welded closed. Everything is coated before it goes back together, because a bare weld inside a box section is a corrosion cell nobody will see again.

The subframe under the whole assembly is the other half of the conversation. On most Altec and Versalift installations the subframe sits on the chassis frame rail with spacers, and water collects in that gap and stays. Southern California rain is infrequent enough that fleets stop thinking about it, then a truck arrives for a fender repair and the subframe flange is scaled through. We clean back to sound steel, let in new material where section has been lost, and rebuild the mounting to spec.

• Outrigger box cracks cut out and let in, not plated over
• Pad mounting ears rebuilt with new stock and correct bore
• Subframe rail sections replaced where corrosion has taken section
• Interior surfaces coated before any box section is closed up
• Mounting hardware replaced and torqued to the installer specification

Pedestal mounting plates, boom rests and the bolt circle underneath

The pedestal is where the aerial device puts everything it is doing into the truck. It mounts through a plate with a bolt circle, and that plate is a structural repair item even though the device standing on top of it is not ours. The first symptom of trouble is almost never a visible crack. It is rust weeping from under the bolt heads, or a paint ring lifting around the circle, which tells you the joint has been moving and water has been getting into it.

When a pedestal plate comes apart we look for three things: elongated bolt holes, deformation of the plate around the circle, and cracking in the subframe structure directly beneath. Elongated holes mean the fasteners stopped carrying preload and the joint went into bearing. That gets repaired by replacing plate material, not by stepping up a bolt size. Remounting follows the aerial manufacturer's mounting instructions, and your equipment provider owns everything on the device side of that plate.

Boom rests get less respect and fail just as often. The rest carries the entire stowed weight of the boom every mile the truck travels, and its mounting into the body or headboard structure fatigues from that cycling. A rest pad that has flattened lets the boom sit low, which changes travel clearance and hammers the mount at every expansion joint on the 57. We rebuild rest mounting into real structure, replace pads, and set the height so the boom seats where it was designed to seat.

Utility body compartment doors, door frames and cable reel mounting

A Knapheide, Reading or Duramag utility body under an aerial installation gets worked hard, and the compartment doors are what tell you the body is tired. Doors that have to be lifted before they latch, doors that stand proud at one corner, doors that rattle the whole way down the 91: all three are usually the door frame and the hinge landing rather than the door itself. Once a frame has racked, adjusting the striker only moves the load somewhere else.

We straighten or replace the frame, rebuild hinge landings with new material where fasteners have torn through, and set latch geometry to a square opening. Gas struts and door seals go back in as part of that work. On steel bodies the lower compartment sill is usually first to go, because it is where wash water, road grit and de-icing residue from a mountain assignment all end up sitting. Sill sections get cut out and let in rather than filled with body filler.

Cable reels, jibs and material handling attachments load a body in ways the body maker never drew. A reel mounted through a compartment top, or a jib bracket bolted to a thin panel, will tear out eventually and it tears out at the worst possible moment. We relocate that mounting into the subframe or into fabricated structure that ties to the frame, spread the load properly, and finish the fabrication so it matches the rest of the truck instead of looking added on.

• Compartment door frames straightened and hinge landings rebuilt
• Latch geometry set to a square opening, not adjusted at the striker alone
• Lower sill sections let in with new material and coated inside
• Reel, jib and attachment mounting tied into subframe structure
• Gas struts, seals and master lock rods reset after frame work

Fiberglass platform liners: cosmetic repair and the line we will not cross

This is where the scope has to be plain. A fiberglass platform liner is a dielectric component. OCRV Center is a body, paint, fiberglass and structural shop. We can address liner cosmetics such as gelcoat chalking, surface scratching and faded color, and we repair fiberglass in the mounting and support structure a platform hangs from. We do not perform aerial device inspection and we do not perform dielectric testing on any insulated boom section or liner. That work belongs to your aerial equipment provider.

In practice most fleets bring us the platform structure rather than the liner. Platform mounting brackets, leveling arm bracket structure and rotator mounting plates all carry load and all can crack, and those are straightforward structural repairs. Where a liner has been gouged deeply enough to matter, the honest answer is that it goes back through the device manufacturer's channel for evaluation rather than into a paint booth, and we say that at the estimate rather than after the truck is torn down.

Fiberglass everywhere else on the unit is fully ours. Fender flares, chassis fairings, molded hoods on an M2 106 or an International MV, and fiberglass compartment covers all get proper laminate work: crack tips drilled to arrest propagation, the crack ground out to a V, structural mat and resin laid in where access allows, contour rebuilt and refinished. That is routine work here and it is a completely different thing from an insulated component.

High visibility finish, reflective striping and water sitting on the frame rail

Utility fleets run white, orange or a specified corporate color, and the truck is a visibility device as much as it is a work platform. Matching a fleet color on a unit that has baked in San Gabriel Valley sun for eight years is not a code lookup. We spray out cards, check them against the actual body under shop lighting and in daylight, adjust the mix, and blend into adjacent panels so a repaired compartment door does not read as a repair from across the yard.

Reflective striping and chevron panels go back on last, over cured and properly prepared substrate. Rear chevron is usually destroyed in exactly the kind of incident that brings the truck in, so it is normally part of the job. Unit numbering, department lettering and any specified conspicuity pattern gets measured before removal and replaced to those measurements. If you supply artwork or a vinyl vendor, we coordinate placement so the unit returns to the rotation matching everything else.

Corrosion control is what actually determines how long the repair lasts. On these trucks water sits on the top flange of the chassis frame rail underneath the subframe and never drains. We open that area while the truck is already apart, clean it back, treat it and coat it before anything closes up. Doing it during a repair the fleet already scheduled adds very little, and it is the difference between a body that survives another decade and one that starts cracking at every mount.

• Fleet color verified by spray out against the aged body, then blended
• Chevron, striping and conspicuity replaced to measured original placement
• Frame rail top flange cleaned, treated and coated under the subframe
• Unit numbers and department lettering reinstalled to original spec