Upgrades, Repair & Overhaul Services
Maximise the lifespan and performance of your Jenbacher gas engines with Clarke Energy’s expert maintenance and upgrade services.
Supporting Long-Term Engine Reliability
Clarke Energy delivers comprehensive support for both scheduled and unscheduled maintenance, overhauls, and component upgrades for INNIO Jenbacher gas engines.
From routine maintenance to full engine strip-downs, our solutions improve uptime, ensure long-term reliability, and offer upgrade opportunities to keep your assets performing at their best.
Why Clarke Energy for Upgrades Repair & Overhaul Services?
Authorised Overhaul Facilities: Including Clarke Energy’s dedicated centres in Liverpool, UK and Ashulia, Bangladesh, or Jenbacher facility in Austria.
Lifecycle Coverage: Scheduled maintenance, reactive repairs, and upgrades all supported in-house.
Swing Engine Options: Reduce downtime with pre-prepared service exchange engines.
On-Site Overhaul Capability: Clarke Energy can perform major overhauls directly at your facility when feasible.
Remote Monitoring Integration: Early issue detection through data-driven insights reduces unplanned downtime.
Fuel-Type-Specific Scheduling: Maintenance intervals adapted to the operational fuel type.
OEM-Compliant Processes: All maintenance and overhauls follow INNIO Jenbacher-approved methods, ensuring warranty protection and performance standards.
Discover More
Scheduled Maintenance
Major Overhauls
Unscheduled Maintenance
Engine Upgrades
Scheduled Maintenance
Regular servicing includes replacement of oil, filters, and consumables typically every 1,000–2,000 hours. Intermediate services occur at 10,000-hour intervals depending on fuel type.
Major Overhauls
Major overhauls may include reconditioning of key components such as cylinder heads, turbochargers, and pumps, restoring them to OEM standards.
Major overhauls at 60,000 or 80,000 operating hours, depending upon engine Type and version, involve removal, strip-down, rebuild, and reinstallation at authorised centres. Reconditioned swing engines can be provided to maintain uptime.
Unscheduled Maintenance
Remote monitoring insights are also used to detect efficiency losses or to inform optimal overhaul timing.
Reactive support is available for fuel-related wear or system faults. Remote monitoring helps identify emerging issues early to minimise downtime.
Engine Upgrades
Available upgrade kits can improve power output, extend service intervals, or help meet evolving emissions regulations.
Overhaul periods provide an opportunity to integrate performance or emissions-related upgrades. Contact Clarke Energy for upgrade options tailored to your model and use case.
Service at the Heart of our Business Ethos
Clarke Energy is committed to delivering the highest levels of after-sales support to our customers. Our view is the highest levels of equipment availability supports the highest levels of return on investment for our customers.
We achieve this by having accountable local service teams, in country OEM-approved spare parts, remote monitoring and diagnostics and local commissioning teams.
Lifecycle Service Support
Latest Service News
Frequently Asked Questions about Upgrades, Repair & Overhaul Services
Technical and Engineering
What’s included in a major Jenbacher engine overhaul?
A full overhaul includes engine disassembly, component reconditioning (e.g. cylinder heads, pumps), and complete rebuilds to OEM specifications.
Are engine upgrades available during overhauls?
Yes, Clarke Energy offers performance and emissions-related upgrades that can be installed during scheduled overhauls.
Financial and Commercial
How does engine overhaul impact lifecycle costs?
Overhauls extend engine life, reduce breakdown risk, protect prior investment, and reverse some of the natural impacts of accumulated wear and tear on engine efficiency —offering strong long-term cost savings.
Are exchange (swing) engines available to reduce downtime?
Yes, Clarke Energy provides reconditioned service exchange engines so your operations can continue during major rebuilds.
Environmental and Sustainability
Can an overhaul improve engine emissions performance?
Yes, reconditioning and upgrades help engines meet modern emissions standards and operate more cleanly and efficiently.
Does Clarke Energy support compliance with EU MCPD or other environmental regulations?
Absolutely. Upgrades and repairs are tailored to ensure engines meet current environmental legislation where required.
Operational and Implementation
Where are overhauls and repairs performed?
Work can be completed on-site (where feasible), at Clarke Energy’s Liverpool or Ashulia facilities, or at the Jenbacher factory in Austria.
What’s the difference between scheduled and unscheduled maintenance?
Scheduled maintenance follows a planned interval. Unscheduled repairs are reactive, often prompted by remote monitoring alerts or faults.
Enquire About Upgrades, Repair & Overhaul Services Today
Speak to a regional Clarke Energy service expert about after-sales support for your Jenbacher engine.


