Diesel Preventive Maintenance
in Houston & Humble, TX

This is a Preventive maintenance reduces downtime, extends engine life, and helps you avoid costly failures. Diesel Specialists, LTD provides diesel prevtive maintenance programs across Houston and Humble for fleets, industrial equipment, and generators.
Call (281) 446-1230 to set up a maintenance plan.

Verified, Trusted and Certified For Your Success.

Need High Quality Diesel Parts?

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What's Included in your PM Program

Built on decades of industrial diesel experience, our checklists go well beyond an oil change to deliver a full equipment health check.

Engine & Generator Inspections

  • Visual checks for leaks and wear (belts, hoses, seals, exhaust)

  • Cooling system inspection (levels, concentration, hoses)

  • Fuel system inspection, including water separator drainage

  • Battery condition testing and terminal cleaning

  • Control panel function and alarm verification

  • Generator connections and output checks


Scheduled Maintenance Services

  • Oil and filter changes per manufacturer specs

  • Fuel and air filter service based on conditions

  • Coolant testing and top-offs/changes as required

  • Lubrication of grease points and moving components

  • Valve/injector checks where specified by OEM and interval


Professional documentation that makes maintenance transparent and compliance straightforward.

Diagnostic & Performance Testing

  • Run-in/performance verification after service

  • Generator load testing and ATS (transfer switch) function checks


Service Intervals and PM Schedules

Monthly: Mission-critical systems, high-hour power units, rental/construction fleets
Quarterly: Standby generators, general industrial equipment, seasonal prep
Annual: Low-hour backup assets, baseline inspections and budgeting


Maintenance membership contracted customers receive priority scheduling.

Maintenance Memberships

We help you choose the right cadence based on hours, environment, and asset criticality—aligned to OEM recommendations.

Reporting & Compliance

Professional documentation that makes maintenance transparent and compliance straightforward.

  • Digital service records: Technician checklists, notes, and photo documentation

  • Parts & warranty logs: What was replaced, when, and by whom

  • Next-due reminders: Clear dates by unit to keep schedules on track


Need to review our format? Request a redacted Sample PM Report with your quote.

Program for Fleets & Facilities

Whether you manage industrial/commercial equipment fleets or generator power for a corporate or educational campus, we tailor preventive maintenance to your work schedules.

Fleet Maintenance Programs

  • Route-based onsite service between rentals or project phases

  • Consistent technicians who learn your equipment

  • Detailed records that support resale value and warranty claims

  • Stocked PM parts for faster turnaround


Facility Maintenance Contracts

  • Standby generator programs with monthly exercising and quarterly service

  • Testing and documentation aligned with safety and readiness requirements

  • Maintenance windows coordinated with operations to minimize downtime

  • Data and reports formatted for easy hand-off to your facility team

Coverage & Dispatch

On-site service across Greater Houston with centralized dispatch and fully equipped service trucks.

Primary Service Area (~100-mile radius from Humble, TX): Houston Metro, Humble, Kingwood, Conroe, The Woodlands, Baytown, Channelview, Pasadena, Deer Park, Pearland, Sugar Land, Katy, Cypress, Galveston, Beaumont, and surrounding cities.

  • Priority dispatch for maintenance contract customers

  • Flexible scheduling (daytime, after-hours, or weekends by arrangement)


Integrated Service Advantages

One partner for maintenance, repairs, and rebuilds.

  • Expert Field Service: PM technicians can address minor issues on the spot or scope repairs quickly.

  • Parts Availability: Extensive inventory of OEM and quality aftermarket parts for common service items.

  • In-House Machine Shop: When inspections uncover major wear, we can plan rebuilds and machining without third-party delays.

Ready to get a PM Quote?

1215 Carpenter Rd, Humble, TX 77396, USA
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Diesel Specialists, LTD
Address: 1215 Carpenter Rd.
Address: Humble, TX 77396
Email: [email protected]
Phone: 281-446-1230
Fax: 281-446-1890

Diesel Specialists logo

If It's Diesel, We Do It.

From Parts to Repairs, We've Got You Covered.
Certified. Reliable. Proven.
Schedule Service or Request a Quote

1215 Carpenter Rd, Humble, TX 77396, USA
Apple map icon
Google map icon

Diesel Specialists, LTD
Address: 1215 Carpenter Rd.
Humble, TX 77396
Email: [email protected]
Phone: 281-446-1230
Fax: 281-446-1890

Diesel Specialists logo

If it's diesel, we do it.

From Parts to Repairs,

We've Got You Covered.
Certified. Reliable, Proven.

Schedule Service or Request a Quote

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