- 24/7 On-Site Truck, Trailer & Equipment Service Watchung, NJ
Mobile Diesel & Heavy Equipment Repair in Watchung, NJ
Looking for a diesel mechanic in Watchung, NJ who comes to you fast, anytime, and anywhere? KS Diesel On-Site Repair provides 24/7 mobile diesel repair, truck repair, and heavy equipment service right here in Watchung.
Whether you’re broken down on Route 22, need emergency work at a construction site off Valley Road, or want same-day repairs at your fleet yard near Watchung Square Mall, we’ve got you covered fast.
WHY CHOOSE KS DIESEL IN Watchung, 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.
24/7 EMERGENCY RESPONSE
Call us any time, day or night. We show up fast across Watchung to get you moving again.
1-YEAR WARRANTY
Every repair comes with a 1-year workmanship guarantee. No questions, no shortcuts.
FAST DIAGNOSTICS
We find the problem fast and fix it on-site. No guessing, no wasted time.
ASE-CERTIFIED TECHNICIANS
Experienced, qualified diesel mechanics ready to respond.
Our Services
Our Mobile Diesel & Equipment Repair Services in Watchung, NJ
We serve contractors, owner-operators, fleet managers, and municipal crews in Watchung with full-spectrum on-site repair services. Below is what we offer, all delivered right to your jobsite or roadside location.
Heavy Equipment Repair
We fix excavators, backhoes, skid steers, dozers, loaders, forklifts, and more on-site. Whether it’s a busted hydraulic hose, bad starter, or wiring issue, we troubleshoot and fix heavy machinery right in the field.
Mobile Truck Repair
Semi-trucks, box trucks, and reefers, we repair them all roadside or in your lot. From brake failures to electrical faults or air leaks, our mobile diesel mechanics bring tools and know-how to you.
Roadside Assistance
Breakdown on Route 22 or Plainfield Ave? Whether your truck won’t crank, is blowing white smoke, or has no boost, we bring mobile diesel diagnostics and on-the-spot fixes to Watchung’s roads and ramps.
Line Boring
We offer precision in-place line boring to fix worn bore holes in loaders, backhoes, and buckets, all without removing the component from your machine. Save time. Avoid transport. Stay working.
Welding & Fabrication
Heavy-duty welding for cracked buckets, broken mounts, and structural issues. On-site fabrication to get your rig or equipment back in service without a shop visit.
Hydraulic Hose Repair
Blown hoses kill jobsite productivity. We carry high-pressure replacements and can rebuild hydraulic lines roadside or on the job. Fast fixes for excavators, dump trucks, skid steers, and more.
Diagnostics & Electrical Repair
We run full ECM scans and troubleshooting for Cummins, CAT, Detroit, Paccar, and more. Check engine light? Loss of power? We'll pinpoint the issue and fix it without towing.
PM Service (Preventative Maintenance)
Keep your diesel trucks and machines running strong. We offer on-site PM services, including fluid changes, filters, brake checks, and multi-point inspections, all without disrupting your crew.
Fleet Maintenance
Got multiple units or run a local fleet? We provide scheduled on-site fleet service for contractors, delivery services, and municipal vehicles in Watchung.
24/7 Emergency Diesel Repair in Watchung, NJ
Equipment failure or truck down after hours? KS Diesel is your go-to emergency diesel mechanic in Watchung.
Whether you’re:
- Stuck with a no-start on US-22 Eastbound
- Blowing white smoke near Terrill Rd
- Down a dump truck at a site on Johnston Drive
We dispatch immediately, day or night.
TESTIMONIAL
Industries We Serve in Watchung, NJ
We proudly support local businesses and industries that rely on heavy-duty diesel performance.
- Construction & Sitework Contractors (residential & commercial)
- Trucking Fleets (reefer, dry van, flatbed, etc.)
- Excavation & Paving Companies
- Municipal Fleets (public works, parks, sanitation)
- Rental Equipment Providers
Whether you’re loading near Watchung Lake or grading lots off Somerset Street, we’re the local diesel repair crew to call.
Neighborhoods We Serve in Watchung, NJ
We serve all of Watchung and its nearby communities, including:
- Stony Hill
- Watchung Circle Area
- Bonnie Burn
- Johnston Drive Area
- Stirling Road Corridor
- Century Trail Area
- Upper Drive
Request a Free Estimate
We’re Watchung’s trusted name in mobile diesel and heavy equipment repair. If you need a diesel mechanic near Watchung, we’ve got your back.