Mobile Fire Truck Repair. Certified. After Hours. In Service Before the Next Call.
25+ years as a certified diesel mechanic, now repairing fire apparatus on-site — pumps, engines, aerials, hydraulics, electrical, brakes, and annual inspections. We come to your station, within 100 miles of Lansford, PA.
24/7 Dispatch
After hours · weekends
100-Mile Radius
Mobile service
NFPA 1911
Annual inspection
25+ Years
Certified diesel
25+ Years
Certified diesel experience
All Major Brands
Pierce, E-ONE, KME, Sutphen, Spartan, Rosenbauer
24/7 Dispatch
Mobile, after-hours, weekends
100-Mile Radius
From Lansford, PA
When the Truck Won't Roll,
Everything Else Stops Too.
The pump won't pass test. The aerial creeps. The engine derates between calls. Every hour the rig sits is response coverage your district doesn't have.
Out of Service
Response coverage drops
A red-tagged rig means longer response times for your district — and a chief who has to explain it.
2–6 Weeks
Typical dealer wait
Tow the rig to the manufacturer's service center and join the queue. Meanwhile, the spare is on the road.
ISO Implications
Annual test failures
A pump that doesn't make rated capacity costs your community ISO points and the department real money.
Wrong Diagnosis
Generalists guess
Most diesel shops don't see fire apparatus often. They'll learn on your truck — and bill you for the education.
It doesn't have to play out that way.
With 24/7 mobile response and a certified diesel mechanic who actually works on fire apparatus, your rig is back in service in hours — not weeks.
Years Under the Hood
Nick Zimmerman
Owner & Certified Diesel Mechanic
Certified
Diesel Mechanic
He's Worked Every Apparatus.
Fixed Every One.
After 25+ years on diesels — including over a decade working alongside fire departments and apparatus shops — there isn't a fire truck problem Nick hasn't seen. He built this practice around one promise: if the rig isn't running, neither is he.
Apparatus problems he's solved this season
Engines
Apparatus & Pump
Pump systems: Hale, Waterous, Darley, Rosenbauer N-series, Pierce PUC.
Fire Apparatus Repair.
Every System Covered.
Mobile diagnostics, repair, and annual inspection support across every system on a fire truck — centrifugal pumps, aerial hydraulics, multiplex electrical, heavy diesel engines, brakes, air, and chassis. Built around the way departments actually run apparatus, not the way a dealer shop wants you to.
Emergency Fire Truck Repair
- After-hours, nights, weekends
- On-site triage + field fixes
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.
Learn moreMobile Fire Truck Repair
- We come to your station
- 100-mile radius from Lansford, PA
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.
Learn moreFire Pump Repair & Testing
- Hale, Waterous, Darley, Pierce, Rosenbauer
- Annual pump service test (NFPA 1911)
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.
Learn moreFire Truck Diesel Engine Repair
- Cummins, Detroit Diesel, CAT, Navistar, Mack
- Fuel, air, cooling, emissions, DPF/DEF
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.
Learn moreAerial Ladder & Boom Service
- Hydraulics, slides, cables, waterway
- Annual aerial inspection support (NFPA 1911)
Aerial ladder, platform, and tower hydraulic and mechanical service — including outrigger systems, rotation bearings, ladder slides, waterway, monitor, and pre-NDT mechanical readiness.
Learn moreFire Truck Annual Inspection
- NFPA 1911 inspection support
- Pump service test + chassis + safety
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.
Learn morePreventive Maintenance Programs
- Scheduled fluids, filters, hoses, safety checks
- Built around your call volume
Quarterly and semi-annual PM scheduled around your duty cycle. Oil, coolant, hydraulic, brake, fuel, and air system service plus pre-failure inspection of pump packing, batteries, belts, and hoses.
Learn moreFleet Fire Apparatus Maintenance
- Multi-rig departments, county systems
- Priority response, scheduled service
Multi-apparatus maintenance programs for career, combination, and volunteer departments — and for private fire brigades and industrial firefighting fleets.
Learn moreApparatus Electrical & Hydraulic Repair
- Multiplex, 12V, charging, scene lighting
- Hydraulic hoses, cylinders, valves, pumps
Multiplex electrical (Class1, Weldon, Innovative Controls), 12V chassis electrical, charging systems, scene and warning lighting, and full hydraulic system repair — hoses, cylinders, valves, manifolds, pumps.
Learn more
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 coverageProcess
How It Works
Three steps from "won't crank" to "back in service."
Call & Triage
You talk to the mechanic. Not a dispatcher, not a service writer, not a call center. We discuss the symptoms — what the truck did, what it didn't, what codes the multiplex panel is throwing — and start ruling things in or out before we ever turn the key.
On-Site Diagnostics & Plan
We come to your apparatus bay or jobsite with diagnostic gear for Cummins, Detroit, CAT, multiplex (Class1, Weldon, IC), and the major pump and aerial systems. You get a clear scope, a parts list, and a realistic timeline before we touch the truck.
Repair, Test, Back in Service
Most repairs happen at your station. Pump work gets tested under draft. Aerial work gets cycled under load. Engine work gets road-tested. You sign off when the rig is ready to put back into the rotation — not before.
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.
Request Mobile Fire Truck Repair. 24/7 Dispatch.
Tell us about the rig and what it's doing. A mechanic — not a service writer — reviews every request.
Frequently Asked Questions
Real answers to the questions chiefs and fleet managers actually ask.