Apparatus Electrical & Hydraulic Repair. The Gremlins End Here.
Multiplex and 12V electrical, charging systems, scene lighting, warning lights — plus full hydraulic system repair for booms, outriggers, jacks, and cylinders.
Electrical gremlins on a multiplex truck don't get diagnosed by reading codes off a generic scan tool. They get diagnosed by someone who knows the difference between a Class1 IO module, a Weldon V-MUX node, and an Innovative Controls multiplex panel — and who's traced the harness on apparatus from the 1990s through last year's deliveries.
Electrical gremlins die when somebody actually traces the harness.
Intermittent electrical faults on a multiplex truck don't get fixed by guessing. They get fixed by somebody with a wiring diagram, a meter, and the patience to walk the circuit from the multiplex node to the affected output. We've done that work on apparatus from the late 1990s through last year's deliveries, on Class1 IO modules, Weldon V-MUX nodes, and Innovative Controls multiplex panels. The gremlins die at our pace, not theirs.
Hydraulic system work.
Aerial outriggers, ladder cylinders, jack cylinders, accessory pumps, valve banks. Hoses fabricated on-site from JIC and ORFS stock — we don't wait three days for a parts house to ship a hose we could've crimped on the spot. Cylinder reseal kits, valve service, manifold work, and pump replacement.
Charging and scene lighting.
Scene lights that get dimmer over the course of a long incident. Batteries that test fine in the morning and won't crank by evening. Alternators that work at idle but won't hold output under load. We test the whole charging system end-to-end — not just "replace the alternator and hope."
Questions about this service
Can you reprogram multiplex modules? +
Hydraulic hose — can you really fabricate on-site? +
Recent Fire Truck Repairs.
A representative slice of recent on-site work — the kind of failures that take an apparatus out of service and the kind of fixes that put it back in. Pump packing, DEF system faults, aerial hydraulics, multiplex electrical, brakes, charging systems, and everything in between.
Pump won't draft on the test pit
Rebuilt packing on a Hale Qmax mid-mount; pumped capacity at 150 PSI net pump pressure with paperwork.
Engine 4 — cranks but won't start
Cummins ISL fuel rail pressure fault; replaced high-pressure pump and primary filter; back in service by morning.
Aerial outrigger won't extend
Traced 12V supply fault to a corroded ground stud; replaced harness section; outrigger cycled and locked clean.
Tank-to-pump valve seized after mutual aid
Removed and serviced the Akron actuated valve; flushed debris; re-tested under draft.
Multiplex panel showing all faults
Class1 IO module replacement after a wet-environment fault; reprogrammed and tested every output.
Rear discharge gate leaking under pressure
Replaced seat and seal kit on a Waterous CSU two-and-a-half-inch gate; pressure tested to 250 PSI.
Engine derating mid-response
Detroit DD13 DEF system fault — failed quality sensor and clogged dosing valve; cleared and re-ran regen.
Air brakes won't release after sitting
Replaced moisture-fouled relay valve and added a desiccant cartridge to the air dryer; full system test.
Aerial rotation slow and creeping
Rebuilt rotation hydraulic motor and replaced worn slew bearing balls; tested full 360° rotation under load.
Scene lights flickering on the foreground
Charging system pulled down by a failed alternator and one weak battery in a four-bank string; replaced both.
Other Fire Apparatus Services
Emergency Fire Truck Repair
When apparatus goes down between calls, the clock isn't a metaphor. We respond after hours with fully equipped mobile units to diagnose and repair on-site — so your house is back in service before the next tone drops.
Mobile Fire Truck Repair
No towing, no waiting in a dealer queue. We bring a fully equipped mobile shop to your apparatus bay or jobsite within 100 miles of Lansford, PA — most repairs completed where the rig sits.
Fire Pump Repair & Testing
Single-stage and two-stage centrifugal fire pump repair, packing replacement, transfer valve service, priming systems, and annual NFPA 1911 pump service tests. We make it pump rated — and prove it.
Fire Truck Diesel Engine Repair
Full diesel diagnostics and repair on Cummins ISL/ISX/X15, CAT C13/C15, Detroit Diesel Series 60, Mack MP7/MP8, and Navistar/International. DPF regen issues, cooling failures, fuel system, no-starts.
Aerial Ladder & Boom Service
Aerial ladder, platform, and tower hydraulic and mechanical service — including outrigger systems, rotation bearings, ladder slides, waterway, monitor, and pre-NDT mechanical readiness.
Fire Truck Annual Inspection
Mobile annual inspection support for fire apparatus — pump service test per NFPA 1911, brake system, steering, suspension, electrical, lighting, ladders, hose, SCBA bracketry, and complete chassis inspection.
Mobile Across the Mid-Atlantic.
100 Miles From Lansford, PA.
We come to your station, your bay, or your jobsite — across eastern PA, northern NJ, the lower Hudson Valley and Catskills, and northern Maryland.
Pennsylvania
Mobile fire truck repair across eastern and central Pennsylvania within 100 miles of Lansford — Lehigh Valley, Poconos, Philadelphia suburbs, Reading, Harrisburg, Wilkes-Barre, Scranton.
See PA coverageNew Jersey
Mobile fire apparatus repair across northern and central New Jersey — Bergen, Passaic, Morris, Sussex, Warren, Hunterdon, Somerset, and Mercer counties.
See NJ coverageNew York
Mobile fire truck repair across the lower Hudson Valley, Catskills, and southern tier of New York within our 100-mile service radius.
See NY coverageMaryland
Mobile fire apparatus repair in northern Maryland — Cecil, Harford, Baltimore, and Carroll county fire departments within our 100-mile radius.
See MD coverageRequest Mobile Fire Truck Service
A mechanic — not a service writer — reviews every request.