Mobile Diesel & Heavy Equipment Repair in Bernardsville, NJ

24/7 on-site repair for trucks, trailers, and heavy equipment in Bernardsville, NJ. We come to your location fast, whether you’re broken down on Route 202, near Mount Airy Road, or anywhere in Somerset County. No towing needed. Same-day repairs with a 1-year workmanship warranty.

We serve Bernardsville contractors, fleets, and drivers. If your truck or equipment is down, we fix it on-site so you can stay on schedule.

About Us

WHY CHOOSE KS DIESEL IN Bernardsville, NJ?

We deliver expert mobile diesel repair, fully on-site, for Bernardsville’s contractors, fleets, and municipal operators. No towing, no delays, just fast, certified repairs where you need them.

100% ON-SITE REPAIRS

All repairs are done at your job site, roadside, or fleet yard, no shop delays or towing required.

LOCAL TO SOMERSET COUNTY

We know Bernardsville roads, job sites, and fleets.

NO SHOP WAITING ROOMS

All repairs are done where your truck or equipment sits.

DOT, PM & FLEET SERVICE EXPERTS

Reliable service for commercial fleets and owner-operators.

ASE-CERTIFIED TECHNICIANS

Experienced, qualified diesel mechanics ready to respond.

Our Services

Our Mobile Diesel & Equipment Repair Services in Bernardsville, NJ

We repair everything on-site, no matter if you’re broken down on the roadside, stuck at a site near the hills, or parked behind a warehouse.

Heavy Equipment Repair

We provide full on-site repairs for excavators, skid steers, loaders, backhoes, and forklifts in Bernardsville. From hydraulic issues to welding and engine failures, we service equipment directly at construction sites like Bernardsville Quarry and Upper Mine Brook Road.

Mobile Truck Repair

Our mobile truck repair team handles Class 8 trucks, box trucks, and fleet vehicles in Bernardsville. Whether you're down on Route 202 or near Post Kennel Road, we fix brakes, starters, AC systems, and more right where your truck is parked.

Roadside Assistance

If you’re stranded on Route 287 or stuck on Mount Harmony Road, we offer fast roadside diesel repair across Bernardsville. From jump starts and fuel delivery to engine stalls and lockouts, we’ll get you moving without delay.

Line Boring

We bring mobile line boring to your site in Bernardsville for worn pivot points, booms, and buckets. There’s no need to transport your machine, we perform precision boring directly where it sits.

Welding & Fabrication

Our mobile welding team in Bernardsville handles emergency repairs for cracked frames, equipment beds, and structural components. We use MIG, TIG, and stick welding on-site to get your equipment back to work.

Hydraulic Hose Repair

We carry custom hydraulic fittings and provide mobile hose replacement across Bernardsville. If your excavator or skid steer blows a line on-site, we crimp and install new hoses fast to minimize downtime.

Diagnostics & Electrical Repair

We use advanced diagnostic tools for all major diesel systems including CAT, Cummins, Detroit, and John Deere. Whether it's low power or a check engine light, we find and fix the issue right on location in Bernardsville.

PM Service (Preventative Maintenance)

Our mobile preventive maintenance service covers oil changes, filters, coolant, DEF, and DOT inspections. We perform recurring service in Bernardsville to keep your fleet compliant and ready to go.

Fleet Maintenance

We offer ongoing mobile fleet maintenance for Bernardsville’s commercial trucks and equipment. Local contractors and delivery fleets trust us to reduce breakdowns with reliable, on-site service.

Breakdowns happen anytime, and we respond anytime

24/7 Emergency Diesel Repair in Bernardsville, NJ

Stuck in Bernardsville? We’re Already on the Way.

Breakdowns don’t wait, neither do we. KS Diesel handles diesel truck, trailer, and equipment emergencies across Bernardsville, including:

Hydraulic hose bursts at Bernards High School job site
Semi-truck won’t start on Route 202
Reefer down at a local distribution yard
Excavator leak at Morristown Road construction site
Brake chamber blown near Bernardsville Train Station

No towing. No delays. We fix it right there, 24/7.

What Our Customers Say

TESTIMONIAL

      EXCELLENT  
   Based on 30 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Howard Mcnabb 
 
 
 
 Trustindex verifies that the original source of the review is Google. I was stuck on 202  from last night and Kevin came and got me up and running this morning. And his prices  are reasonable .I would definitely go with him again
  
 
      Posted on Google  
   
   Nicholas Dessauer 
 
 
 
 Trustindex verifies that the original source of the review is Google. Kevin is a absolute amazing Mechanic!!!! We were coming back to Long Island fromKY and the Fan pulley went out on our 3500 diesel truck and he was able to get the parts and fix the truck and have us back on the road in very quick way. Excellent service and communication. Price was very reasonable and for a same day call and fix he did an Outstanding Job!!! Thank you again Kevin we appreciate you so much!!!!
  
 
      Posted on Google  
   
   Karam Bains 
 
 
 
 Trustindex verifies that the original source of the review is Google. I am from canada and got problem on my Columbia with Cat c15, twin turbo And looked for mobile service and got in touch with KS diesel in NJ he is the best guy I have ever met for mobile service , very much knowledgable and cool headed , not greedy Would recommend this guy to everyone, if you got any problem in Somerset NJ area call this guy 10/10 for price 10/10 problem solver
  
 
      Posted on Google  
   
   Eric Karstensen 
 
 
 
 Trustindex verifies that the original source of the review is Google. Kevin is the best. Fast excellent work. Great on the road mechanic. Best prices around! Nice guy. Would recommend for all truck repairs. A++
  
 
      Posted on Google  
   
   Danny Guerrieri 
 
 
 
 Trustindex verifies that the original source of the review is Google. Awsome
  
 
      Posted on Google  
   
   ibrahim elhabbal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Trust worthy, honest, genuine and very hard working. What else do you need from your mechanic. Always answers right away and gives you best recommendations!!!!!!

Industries We Serve in Bernardsville, NJ

We specialize in keeping local crews and machines moving:

Construction contractors – residential & commercial
Trucking fleets – delivery, box trucks, long-haul
Excavation companies – grading, foundation, utility
Municipal and public works fleets
Equipment rental companies with on-site needs

If your operation depends on diesel power, we keep it running.

Gallery

Our Recent Works

Mobile Diesel Repair Near you

Neighborhoods We Serve in Bernardsville, NJ

We serve Bernardsville and all surrounding areas, including:

No matter where your breakdown happens in Bernardsville, we come to you, fast and fully equipped.

Mobile Diesel Repair in Bernardsville, NJ

Request a Free Estimate

Need a diesel mechanic near Bernardsville, right now? KS Diesel is on-call 24/7 with fully equipped service trucks ready to respond across Somerset County.