Annual Maintenance & Service Contracts

Keep your diesel engines reliable year-round with DSL’s scheduled maintenance. Since 1983,

Diesel Specialists, LTD. has provided professional, on-site and in-shop care for diesel

power systems across Greater Houston.

Trusted by industry for over 40 years.

Genuine OEM Parts

The Right Part, Right Away.
Need a part for your diesel equipment?

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Reliable Diesel Maintenance—Planned, Not Reactive

At DSL, we believe reliability starts with routine service. Our Annual Maintenance Contracts (AMC) are designed to prevent costly breakdowns and keep your equipment ready when you need it most.

Each contract includes scheduled inspections, oil and filter changes, and system diagnostics for generators and engines—performed by our certified diesel technicians using OEM-grade parts and up-to-date tools.

Service Intervals

To maintain dependable performance, we recommend:

  • Every 6 months or 250 hours of operation — whichever comes first

  • Annual full service as a minimum standard

Routine care ensures your generator or engine stays efficient, compliant, and ready for demand.

What’s Included

Major Service (A)

Comprehensive inspection and maintenance covering:

  • Lubrication, fuel, and cooling systems

  • Air intake and exhaust systems

  • Control panels and instrumentation

  • Engine electrical system and alternator

  • Oil and filter changes

  • Full performance and safety check

Minor Service (B)

  • Routine mid-cycle check including:

  • System inspection (lubrication, fuel, cooling, air intake)

  • Electrical and control panel check

  • General engine maintenance

Overhauling & Repairs

  • Our Humble, TX workshop is equipped for complete generator and engine overhauls, including:

  • Dyno meter testing for efficiency validation

  • Flywheel grinding and precision machining

  • OEM-grade parts and diagnostics tools

  • Skilled engineers with 30+ years of experience

We restore performance and longevity—returning engines to “as new” condition quickly and safely.

Benefits of Regular Maintenance

  • Extends engine and generator life

  • Prevents mid-operation failures

  • Maintains fuel efficiency

  • Prevents diesel wet stacking

  • Detects wear before failure

  • Includes fuel drain/replacement and filter inspection

  • Service available on-site or at DSL’s fully equipped shop

Support Options

Routine Maintenance

Scheduled visits with full inspection, testing, and documented reports.

On-Call Maintenance

Discounted hourly service for unplanned issues—rapid dispatch for urgent repairs.

Support Response

We respond promptly by phone, email, or in person to troubleshoot and repair faults while keeping clients informed throughout.

Pricing

Every maintenance plan is customized to your equipment, location, and usage.

Call or email our service department for a personalized quote and discover how affordable long-term reliability can be.

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