Precision Machining for Industrial

Diesel Engines

At Diesel Specialists, LTD. in Humble, TX, our in-house diesel machine shop rebuilds and reconditions components to precise factory specifications—ensuring dependable performance, reduced downtime, and longer equipment life.

Verified, Trusted and Certified For Your Success.

Genuine OEM Parts

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

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Our Machine Shop Services

Head Rebuilds & Valve Work

Complete cylinder head reconditioning: pressure testing, crack evaluation, valve seat cutting, guide replacement, and precision milling—rebuilt to OEM specifications with documentation.

Flywheel Surfacing & Clutch Services

Precision flywheel resurfacing/balancing and industrial clutch service for construction, power generation, and plant equipment—installed and torqued to spec.

Block, Crank & Rod Machining

Engine block boring/honing, deck surfacing, crankshaft grinding/polishing, and connecting-rod reconditioning. Dimensional checks referenced to manufacturer tolerances.

Flywheel Resurfacing & Clutch Services

Common symptoms we solve

  • Chatter or shudder engaging the clutch

  • Slipping under load (RPM rises without speed)

  • Hard shifting / gear engagement issues

  • Burning smell or excessive clutch dust

  • Driveline vibration

What we do

  • Surface & flatness: Professional grinding to tight flatness tolerances (commonly around ≤0.002" across the friction face), with surface finish appropriate for the clutch material.

  • Inspect & correct: Check heat spots, cracks, and ring gear wear; repair/replace as needed.

  • Balance: Dynamic balancing to reduce vibration.

  • Clutch installation: Pressure plate, disc, release system inspected and installed to spec.

Result Smooth engagement, reduced chatter, and longer clutch life when paired with quality parts and proper break-in.

Cylinder Heads & Valve Work

Typical rebuild process

  • Disassembly & cleaning – Complete teardown and hot-tank/ultrasonic cleaning.

  • Pressure testing & crack check – Cooling passages, seats, chambers.

  • Seat & guide work – Precision seat cutting and guide replacement for concentric sealing.

  • Milling & surface finish – Deck height/flatness restored for gasket seal.

  • Assembly & QA – New seals/springs as required; lash/installed heights verified.

Deliverables you receive Pressure test results, machining notes, and final inspection checklist.

Block, Crank & Rod Machining

  • Inspection & measurement – Bore diameters, out-of-round, taper, deck condition, journal sizes; compared to OEM specs.

  • Crankshaft – Journal grinding to spec and micro-polishing for bearing contact.

  • Blocks – Cylinder boring/honing, deck resurfacing, thread repair.

  • Connecting rods – Big-end resizing, small-end bushings, alignment checks.

Typical examples Main/rod bearing clearances targeted within OEM ranges; Final measurements are recorded on your job card.

Brands & Parts Availability

Dealer/line experience you’ll recognize DEUTZ, ISUZU, JOHN DEERE, KUBOTA, PERKINS, YANMAR, JCB, FPT. Rhelko (Kolher)


We also service components from Cummins, Caterpillar, Detroit Diesel, and other major industrial diesel manufacturers.

Parts sourcing

  • OEM and vetted aftermarket options available based on application and budget.

  • Common inventories: gasket sets, pistons/rings/liners, bearings, valves/seats/guides, clutch components, flywheel ring gears, pilot bearings.

Turnaround, Warranty & Quality Assurance

  • Turnaround Timelines are quoted per job (expedites available when scheduling allows).

  • Written warranty Terms are provided with your estimate and included in your close-out package.

  • QA package Dimensional reports (as applicable), pressure-test results, torque records, and parts list.

Pickup/Delivery Available across Greater Houston and quoted with your job. We can coordinate logistics for engines and major components.

Before & After

Flywheel restoration heat-spotted surface - resurfaced/balanced with new ring gear.

Cylinder head cracked seat area - rebuilt head with new seats/guides and verified flatness.

Crankshaft scored journals - ground/polished journals with recorded sizes.

Ready for a quote?

1215 Carpenter Rd, Humble, TX 77396, USA

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

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

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

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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