Precision engineering for zero emergencies
Diesel Generators Repairs
Usually used when there is an emergency situation, when generators fail – it is catastrophic. At Mawdsleys, we don’t take chances with power. We provide both standby and prime power diesel generator repair, overhaul, and inspection services —working across every major sector. Whether your generator is mission-critical for production, safety, or just keeping operations moving—we make sure it is reliable when it matters most.
Leading causes of generator breakdowns
A generator is only as good as its last service. Here are the faults we see time and again—each avoidable with the right maintenance:
- Battery Failure: The #1 cause of failure. Sulphate buildup on battery plates prevents sufficient current flow. Without power from the battery, the generator won’t start—simple as that.
- Low Coolant Levels: Coolant drops too low, the generator overheats, and an auto-shutdown kicks in. It’s a silent killer. Visual checks prevent this.
- Fuel Contamination: Diesel goes stale. Stagnant fuel grows bacteria, gums filter, and starves the engine. If your generator smells bad or runs weak, you’ve got dirty fuel.
- Under Loading: Generators are built to work. Run them idle or at low load too often, and internal damage builds up. Then they fail under full demand—when you need them most.
- Human Error: Someone leaves auto-start switched off. It happens. The result? A blackout.
Proactive Generator Servicing & Inspection
Nearly every cause of generator failure can be prevented with scheduled maintenance. That’s why we recommend a full generator service every 6 months—or every 400 operating hours, whichever comes first. Generator maintenance is cheaper than emergency generator repair.
Our thorough inspection includes:
- Fuel polishing and testing
- Load bank testing
- Coolant, oil, and water checks
- Control panel diagnostics
- Battery terminal cleaning
- Alternator, exhaust, and engine checks
A Workshop Built to Keep You Running
Some jobs need the workshop. When we can’t fix your generator on site—or if it’s more efficient to work offsite—we’ll transport your equipment to our fully equipped, in-house workshop.
Here’s what that means:
- Full stock of genuine spares and parts
- Skilled engineers with decades of experience
- Rapid turnaround on overhauls and repairs
- Delivery and installation after the service
Our facilities are built for speedy, precision, and reliable generator repairs. Because in your business, downtime isn’t an option.
Case Studies
This is why
1. Speed of service
Reducing your downtime is our main priority. That’s why, from the moment you call to the final report, we move fast. No delays. Just results.
2. High-quality service
With over 100 years experience, we’ve built a reputation on precision, excellence, and constant improvement. You expect the best—we deliver it.
3. One-stop shop
The vast experience of our staff, combined with our state-of-the-art workshop, provide us with flexibility. We do not only repair – we manufacture.
4. ATEX motors specialists
Repairing all types of ATEX motors. We are an AEMT Ex Registered Repairer recognised for our quality systems and professional repair standards.