Wheel Seal Replacement

Mobile Truck & Trailer Hub Service

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On-Site Wheel Seal Repairs for Semi Trucks, Trailers, and Heavy Equipment

NoCo Diesel Services LLC offers professional wheel seal replacement and hub component service for diesel trucks, trailers, and commercial equipment. Based in Johnstown, CO, we deliver 24/7 mobile repair across Northern Colorado, Southern Wyoming, and Western Nebraska.


If you're dealing with a leaking wheel seal, failed hub bearing, or grease buildup on your brake components, we dispatch a certified diesel technician directly to your location—no towing required. Our mobile service helps prevent further damage, avoid roadside violations, and keep your equipment operating safely.

What Is a Wheel Seal, and Why Does It Matter?

Wheel seals are designed to keep oil or grease inside the hub while preventing dirt and moisture from entering the bearing system. Over time, seals can wear out, become brittle, or shift due to heat, contamination, or excessive movement. Once a seal fails, lubricant escapes and contaminants may enter the hub—leading to bearing failure, brake contamination, and unsafe operating conditions.

Common signs of a failed or leaking wheel seal include:

  • Visible grease or oil on the inside of wheels
  • Streaks on rims or brake drums
  • Dripping oil near the hub
  • Uneven tire wear due to bearing issues
  • Brake shoes saturated with grease or oil
  • Low hub oil levels
  • Overheating wheel ends


Ignoring a wheel seal leak can result in catastrophic wheel end failure or brake malfunction. Our goal is to catch and fix the issue before it becomes a roadside emergency.

Mobile Wheel Seal Repair Services

NoCo Diesel Services provides mobile hub and wheel seal repairs for trucks, trailers, and equipment at your location. Services include:

  • Wheel seal replacement (oil bath and grease-packed)
  • Hub cap and gasket replacement
  • Bearing inspection and cleaning
  • Hub oil level checks and refills
  • Brake drum inspection for contamination
  • Brake shoe replacement (if oil-soaked)
  • Axle end cleaning and prep
  • Leak verification and pressure testing
  • Axle nut and torque spec adjustments

Wheel Seals for All Equipment Types

Our mobile wheel seal service is available for:


  • Semi-trucks and Class 8 tractors
  • Flatbed, dry van, and reefer trailers
  • Box trucks and delivery vehicles
  • Dump trucks and vocational units
  • Lowboys and heavy haulers
  • Construction and agricultural equipment
  • Tankers, car haulers, and specialized trailers

Whether you operate one truck or manage a fleet, we help you avoid downtime with fast, accurate seal replacement at your location.

When to Replace a Wheel Seal

A leaking seal should be addressed immediately. Common scenarios where we recommend replacement:

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DOT Violation

Wheel seal leak flagged during inspection

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Brake Contamination

Grease or oil on brake shoes or drums

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Recurring Leak

Seal replaced previously but failed again

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Preventive Maintenance

Scheduled hub service with brake job

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Mileage-Based PM

Regular interval seal replacement (e.g., every 100,000 miles)

24/7 Emergency Response for Wheel Seal Failures

A blown wheel seal on the road can cause serious issues fast—from brake loss to potential fire risk if hot oil contacts friction material. That’s why NoCo Diesel Services offers 24/7 mobile response to leaking or failed wheel ends.

If you’ve been pulled out of service, failed a roadside inspection, or noticed oil spraying on your wheel, call us immediately. We’ll arrive with the right tools and parts to replace the seal and clean the surrounding area to prevent further damage.

Experienced Diesel Technicians You Can Trust

Our lead technician brings over 15 years of experience working on diesel trucks, trailers, and heavy-duty equipment—including dealership training through International and Kenworth. We follow manufacturer torque specs, proper cleaning procedures, and use premium parts for every seal replacement.

Every repair includes a full inspection of the wheel end assembly, brake components, and hub oil level to confirm that the system is safe and ready for service.

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Fleet Preventive Maintenance and Wheel Seal Checks

As part of our fleet maintenance programs, we inspect wheel seals during PM services and notify you of any signs of leakage, wear, or damage. This proactive approach helps reduce costly wheel-end failures and DOT violations.

We also offer complete hub and brake inspections for trailers and power units as part of DOT prep or quarterly maintenance schedules.

Call Now for Mobile Wheel Seal Repair

Don’t risk safety violations or expensive breakdowns. If you’ve spotted a leaking hub or need a wheel seal replaced, NoCo Diesel Services LLC is ready to help. We deliver fast, professional service at your site—day or night.