(928) 582-8583
Murphy's Diesel mobile repair truck in Northern Arizona

Mobile Diesel
Repair

Flagstaff ยท Holbrook ยท Williams ยท Ash Fork, AZ
24/7 On-Site Semi Truck & Diesel Repair

(928) 582-8583

Live operators ยท We come to you ยท Real ETA confirmed

What We Fix

โœ“ Semi Trucks โœ“ Tractor-Trailers โœ“ Diesel Engines โœ“ Reefer Units โœ“ Heavy Equipment โœ“ Fleet Vehicles โœ“ Box Trucks โœ“ Buses โœ“ Generators โœ“ Farm Equipment
โœ• No Gas Engines โœ• No Passenger Cars โœ• No Motorcycles

We bring the shop to you. Our mobile diesel mechanics handle everything from emergency breakdowns to scheduled maintenance โ€” right where your truck sits. No tow needed.

(928) 582-8583
I-40Corridor Specialists
24/7Emergency Dispatch
3AZ Service Locations

Our Services

Mobile Diesel Repair & Service

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Engine Repair & Diagnostics

Complete diesel engine diagnostics, repair, and rebuilds. Cummins, Detroit, CAT, Paccar, International โ€” all makes and models.

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Tire Service

Steer, drive, and trailer tire replacement and repair. We carry common sizes on our service trucks for fast roadside swaps.

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Reefer / APU Repair

Trailer refrigeration unit diagnostics and repair โ€” Carrier, Thermo King. Keep your load cold and on schedule.

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Electrical & ECM

Full electrical diagnostics โ€” wiring, ECM programming, sensor replacement, lighting, and aftertreatment systems.

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DPF / Aftertreatment

DPF cleaning, regen issues, DEF system repair, EGR valve service, and emissions troubleshooting.

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Heavy Equipment Repair

On-site repair for excavators, loaders, dozers, and generators. Hydraulic, engine, and electrical service.

Our Crew in Action

Real Repairs. Real Results.

Murphy's diesel repair truck Night roadside repair On-site service Heavy equipment service Murphy's service truck Mobile repair service
Murphy's fleet

Why Murphy's

We Come to You

Mobile Service Trucks

Fully equipped service trucks with tools, parts, and diagnostics โ€” we bring the shop to your breakdown.

All Major Brands

Cummins, Detroit Diesel, CAT, Paccar, International, Volvo, Mack โ€” all makes serviced.

No Tow Required

We fix it where it sits. No expensive tow, no waiting at a shop โ€” get back on the road faster.

24/7 Emergency Dispatch

A real dispatcher answers every call. No voicemail, no automated menus โ€” just fast help.

Certified Mechanics

ASE-certified diesel technicians with years of heavy truck and equipment repair experience.

Fleet Billing

Net-30 accounts for carriers, fleets, and freight companies. Call to set up an account.

Service Area

Northern Arizona & I-40

3 locations across Northern AZ โ€” dispatching mobile diesel mechanics to your breakdown location 24/7.

๐Ÿ“ Flagstaff ๐Ÿ“ Holbrook ๐Ÿ“ Williams ๐Ÿ“ Ash Fork ๐Ÿ“ Winslow ๐Ÿ“ Seligman ๐Ÿ“ Kingman ๐Ÿ“ Sedona ๐Ÿ“ Prescott ๐Ÿ“ Camp Verde
(928) 582-8583

FAQ

Common Questions

Do you work on gas engines or passenger vehicles?+

No โ€” we specialize exclusively in diesel engines. Semi trucks, heavy equipment, buses, generators, and commercial diesel vehicles only.

Do you come to my location or do I need to bring it in?+

We come to you. Our mobile service trucks are fully equipped to handle most repairs on-site โ€” at truck stops, on the shoulder, at your yard, or wherever your truck sits.

What brands do you work on?+

All major diesel engine manufacturers: Cummins, Detroit Diesel, Caterpillar, Paccar (MX-13, MX-11), International, Volvo, and Mack. All truck makes and models.

Can you fix my reefer unit?+

Yes โ€” we service Carrier and Thermo King trailer refrigeration units. Diagnostics, repair, and maintenance to keep your load at temperature.

What's your response time on I-40?+

With 3 locations across Northern Arizona, we're typically on-site within 60-90 minutes on the I-40 corridor. Call for a real ETA from our dispatcher.

Do you offer fleet or carrier accounts?+

Yes. Net-30 billing and preferred rates for trucking companies, freight carriers, and fleet operators. Call to set up an account.