Mobile Diesel & Heavy Equipment Repair in Califon, NJ

Broken down on Fairmount Road? Need diesel repair near Pickle’s Corner? KS Diesel On-Site Repair brings mobile truck, trailer, and heavy equipment service anywhere in Califon, NJ.

From Vernoy Road to CR-512, Califon contractors count on their equipment. When it fails, you need a diesel mechanic who comes to you, fast.

About Us

WHY CHOOSE KS DIESEL IN Califon, NJ?

From backroads to job sites, KS Diesel On-Site Repair delivers fast, expert service right where you are. Fully mobile. Always ready. No shop delays. Just reliable repairs that keep Califon working.

100% ON-SITE REPAIRS

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

Trusted by Fleets, Excavators & Contractors

We’re the go-to mobile diesel mechanic for the people who keep Califon moving.

1-Year Workmanship Warranty

Every repair comes backed by a full year of quality assurance.

We Work on All Equipment Types

From semi-trucks to skid steers, excavators to forklifts, we’ve got you covered.

ASE-CERTIFIED TECHNICIANS

Trained and experienced techs who fix it right the first time.

Our Services

Our Mobile Diesel & Equipment Repair Services in Califon, NJ

We offer full-service, professional repair for diesel trucks, trailers, and equipment, delivered straight to your site in Califon, NJ.

Heavy Equipment Repair

Stuck with a broken-down excavator or skid steer near Rockaway Creek Rd? We repair loaders, backhoes, forklifts, and all major heavy equipment brands. All work is performed on-site at your location.

Mobile Truck Repair

From semi-trucks to box trucks, we handle electrical issues, engine problems, air leaks, AC repair, and more. Need mobile truck repair in Califon? One call is all it takes. No towing required.

Roadside Assistance

Breakdown on Fairmount Road or Main Street? We bring the tools, diagnostics, and parts to repair your diesel engine, trailer, or reefer unit right where it sits. Quick response anywhere in Califon.

Line Boring

We provide precision line boring for worn pivot points, buckets, and booms. Our mobile setup handles everything on-site. Perfect for job sites, farms, and rental yards in the Califon area.

Welding & Fabrication

Need mobile welding near Hoffman Corner? We offer on-site fabrication, frame repair, and bucket welds. Ideal for field repairs in hard-to-reach areas across Califon.

Hydraulic Hose Repair

Leaking hydraulic line? We fabricate and install new hoses right at your location. We service excavators, skid steers, and tractors throughout Califon, including municipal yards and private job sites.

Diagnostics & Electrical Repair

Is your check engine light on? We use advanced diagnostics to quickly identify diesel system faults. We troubleshoot DPF systems, DEF issues, sensors, and electrical faults with accuracy.

PM Service (Preventative Maintenance)

Avoid downtime with our on-site Preventative Maintenance service. We take care of fluid changes, filter replacements, and system checks. We work around your schedule to keep your fleet running.

Fleet Maintenance

Managing multiple trucks or machines? We offer tailored fleet maintenance programs for contractors, trucking companies, and municipalities in Califon. We keep your equipment working and your business moving.

Breakdowns happen anytime, and we respond anytime

24/7 Emergency Diesel Repair in Califon, NJ

Stranded on CR-512? AC compressor failure during a night haul near Hoffman Corner? We handle urgent diesel repairs for:

Call anytime, day or night. We’ll dispatch a mobile diesel tech to your exact location in Califon, equipped to get you moving again.

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!!!!!!