Allison 501 Gas Turbine Overhaul, Repair and Maintenance

About Us


Zero-Hour Gas Turbine Ovehauls

Your high quality, low cost alternative to the OEM and their AMC's for complete zero-hour overhaul of your Allison 501Gas Turbines.  


LE-2 Combustion Liners and Spare Parts

We manufacture 2 -piece LE 2 liners with internal TBC coating.  They have been in service for over 10 years with excellent results.

Our network of parts suppliers can provide all new parts for the Allison 501 KB, KC and KF family of gas turbines.


Full Load On-Site Testing

After Repair or Overhaul, we full load test both Single Shaft 501KB/KB5 turbines and 501KC/KC5/KF gas generators in our on-site test facility that has 4 MW of load banks connected to the Turbine Generator package.  We verify performance, vibrations and confirm there are no oil leaks.

Site Content



Reblade the entire rotor, remetalize the compressor case, install new compressor vanes, recoat including marine coatings.



New or overhauled LE1, LE 2 or LE 3 combustion liners, bundled into a six-pack


Replace all blades, vanes, bearings and seals to restore your turbine to zero-hour condition

Install new vanes, blades, bearings and seals as needed to restore your turbine to zero-hour condition

Rotor Balancing


We balance all compressor and turbine rotors and mid shafts in-house.  Our goal is to get the unbalance down to less than half the spec limit.

Field Service


Our technicians are available to support your field service needs 24/7.   Just call us.

Loaner Engines


We have both single shaft and two shaft loaner engines available for use while your engine is in the shop for repair or overhaul.

Contact Us

Better yet, see us in person!

We love our customers, so feel free to visit during normal business hours.

Pro Tech Turbine Services LLC

511 Chestnut Business Park Drive, Tomball, Texas 77375

Phone: 281-372-1600 Fax: 281-372-1605


Send Us an E-mail


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