Services
Generator Repairs, Servicing, Maintenance and Specialist Work
We repair, service and maintain generators on site across Gauteng, from portable units to large standby and prime-power sets. Book a repair when something has gone wrong, a service when the generator is due, and a maintenance plan to keep it ready all year. Specialist services go deeper into one system, such as the AVR, the controller, the fuel system or the alternator windings, and cover emergency callouts, load testing and new installations.
- Repairs: a fault to find and fix
- Servicing: one visit when it is due
- Maintenance: a planned programme, all year
- Specialist work: one system, in depth
Established 2006
20 years of experience
24/7 operations
We Arrive Within 1–2 Hours
(usually within 1 hour)
Free callouts and quotations
One-year warranty
Qualified and certified technicians
We Service & Repair All Generator Brands
All generator makes and models
1 kVA–20,000 kVA capability
Core services
Start with the core service you need
01 · When something has gone wrong
Generator Repairs
Finding and fixing a fault on site when the generator will not start, run, carry the load or make the right power.
Typical reasons
- Will not crank, or cranks but will not fire
- Runs but gives no power, or the voltage or frequency is unstable
- Overheating, leaks, smoke or a shutdown alarm
- Trips when load comes on, or the changeover will not transfer
Report a faultWhat it involves
- Fault finding on the engine, fuel system, alternator, AVR and controls
- A free quotation before work starts
- The repair, then a test run under load where possible
02 · One visit, when it is due
Generator Servicing
A single scheduled visit when the running hours or the date say a service is due: oil, filters, checks and a test run.
Typical reasons
- The hour meter has reached the service interval
- A year has passed on a standby set that seldom runs
- Load shedding or long outages have brought the hours interval round early
- The generator has stood unused for months
Book a serviceWhat it involves
- Engine oil changed, with the oil and fuel filters where the engine has them
- Air filter cleaned or replaced, spark plugs on petrol and gas engines, water drained from a diesel’s separator
- Coolant, belts, battery and charger checked where fitted
- A test run and a summary of what was found
03 · An ongoing plan, all year
Generator Maintenance
An ongoing plan of services, inspections and test runs, scheduled around how the generator is used, with a record of every visit.
Typical reasons
- Backup power your home, business or site cannot be without
- Daily running through load shedding, with hours to track between services
- Several generators or sites to look after
- You want service dates tracked and a history of the work
Discuss a maintenance planWhat it involves
- An agreed schedule, by running hours and by date
- Inspections, test runs and changeover checks between services
- Records for every visit
- Faults found early and quoted before they cause a failure
How it fits together
Where specialist services come in
Most work starts with one of the three core services. A repair visit begins with fault finding, and when the cause turns out to sit in one system, such as the AVR, the controller or the fuel system, the repair becomes specialist work on that system. A service or maintenance visit often finds the same faults earlier, before they stop the generator.
You can also book a specialist service directly when you already know the problem: a controller that shows the same alarm after every start, voltage that hunts, a diesel delivery that has gone bad, or a standby set that has only ever run lightly and needs proving under load. Installation is separate again: a new or replacement generator, sized to the load and connected through a changeover.
Load shedding blurs the lines. A generator running every day reaches its service interval in months rather than a year, and every outage is another start for the battery and another transfer for the changeover. That is when a maintenance plan scheduled by running hours makes more sense than waiting for the next breakdown.
Specialist services
Specialist generator services
Emergency repairsFor a generator that has failed while the power is off, at night, over a weekend or in the middle of load shedding. We arrive within 1–2 hours, usually within 1 hour.Learn more 
AVR repairsMissing, wrong or unstable voltage traced to the automatic voltage regulator, its sensing or the exciter, with a matched regulator fitted and set up under load.Learn more 
Control panel repairsControllers that raise false alarms, will not auto-start or miss a mains failure, plus sensors, relays, control wiring and battery chargers.Learn more 
Fuel system repairsEngines that starve, smoke or stop under load: water and sludge in diesel, blocked filters, air leaks, lift pumps and injectors, traced from tank to engine.Learn more 
Load bank testingA stepped test against an artificial load that proves the set can carry its rating, and helps clear wet stacking on lightly loaded diesels. Arranged and quoted per site.Learn more 
Generator rewindingAlternator windings that have burnt or failed an insulation test, checked on site, with a rewind or replacement alternator arranged, quoted and refitted.Learn more 
Generator installationA new or replacement generator sized to what must run, sited safely, connected through a manual changeover or ATS, and commissioned under load.Learn more
Which service fits your situation
| If this is happening | Ask for | What we do first |
|---|---|---|
| The generator will not start, gives no power, overheats, leaks or shuts down | Ask forGenerator repairs | What we do firstFind the fault on site, then quote the repair before any work starts |
| It has failed during an outage, at night or over a weekend | Ask forEmergency repairs | What we do firstRestore power where the fault allows, or make the set safe and quote the repair |
| The hour meter has reached the service interval, or a year has passed | Ask forGenerator servicing | What we do firstChange the oil and filters, check coolant, belts and battery, and test run |
| Backup power is critical, or you look after several generators | Ask forGenerator maintenance | What we do firstAgree a schedule by running hours and date, with a record of every visit |
| Lights flicker, appliances fail on high voltage, or there is no output | Ask forAVR repairs | What we do firstMeasure output and excitation to prove whether the regulator is at fault |
| Alarms will not clear, or it will not start or stop automatically | Ask forControl panel repairs | What we do firstRead the alarm and event log, then test the sensors, wiring and settings |
| The engine starves, smokes or stops under load, often after a fuel delivery | Ask forFuel system repairs | What we do firstCheck the fuel for water and sludge, then trace the supply to the injectors |
| A standby set has only run lightly, or must be proved after a major repair | Ask forLoad bank testing | What we do firstAgree the load steps and duration, then arrange the test and record the readings |
| The alternator smells burnt, or its insulation test has failed | Ask forGenerator rewinding | What we do firstTest the stator, rotor and exciter windings before recommending a rewind |
| You are adding, replacing or upsizing a generator or changeover | Ask forGenerator installation | What we do firstSize the set from what must run, including motor starting loads |
Not sure which fits? Describe what the generator is doing and we will point you to the right service, or start from the symptom on generator problems.
By customer
Services for homes, businesses and industry
Homes and estatesPortable, inverter and silent standby sets that keep lights, gates, alarms, borehole pumps and fridges going through load shedding, repaired and serviced at your home.Learn more 
BusinessesStandby sets for shops, offices, restaurants, clinics and schools, where an outage costs sales and stock. Services and tests can be booked outside trading hours.Learn more 
IndustryLarge standby and prime-power sets, including paralleled systems, for factories, warehouses and plants, where records and load testing matter as much as repairs.Learn more
By generator type
Services by generator type
Diesel generatorsStandby and prime-power sets for homes, business and industry.
Petrol generatorsPortable and open-frame units, including inverter models.
Gas generatorsEngine, electrical and control work on gas-fuelled sets.
Standby generatorsAutomatic sets with a changeover that start when the mains fails.
By problem
Start from the problem
- Will not startNo crank, just a click, or cranks without firing: battery, starter, fuel, glow plugs or the controller.
- Runs but no powerEngine running, nothing at the board: output breaker, AVR, excitation or lost residual magnetism.
- Voltage problemsFlickering lights, or low, high or unstable voltage: AVR, engine speed, wiring or unbalanced load.
- OverheatingHigh-temperature alarms and shutdowns: coolant, radiator, fan belt, thermostat or too much load.
- Shuts down or tripsStops on an alarm or trips as load comes on: protection settings, sensors, fuel supply or overload.
- LeaksDiesel, oil or coolant under the set: hoses, seals, gaskets, fuel lines or the tank.
- SmokeBlack, white or blue exhaust smoke. Each colour points to a different engine problem.
- Changeover problemsRuns, but will not take the load when the mains fails, or will not hand it back.
FAQ
Choosing a generator service
Which service do I need?
If the generator has a fault, you need a repair. If it is working but due for oil, filters and checks, book a service. If you want it looked after on a schedule all year, ask about maintenance. Not sure? Call us and describe what it is doing.
When do I need a specialist service rather than a general repair?
You do not have to decide. Book a repair and the fault finding shows whether the cause sits in one system, such as the AVR, the controller or the fuel system. If you already know, for example because the controller shows the same alarm after every start, or a fuel delivery was contaminated, ask for the specialist service directly.
Is a maintenance plan just regular servicing?
It includes servicing, but adds what happens in between: inspections, test runs, changeover checks and a record of every visit, scheduled by running hours as well as by date. A one-off service suits a generator that seldom runs; a plan suits one your home or business cannot be without.
Do you only work on diesel generators?
No. All generator makes and models: diesel, petrol and gas, from portable units to large standby sets. 1 kVA–20,000 kVA capability.
Are callouts and quotations free for every service?
Yes. Free callouts and quotations apply to every service, and no work starts until you approve the quotation.
Do you offer emergency callouts outside office hours?
Yes. We take emergency callouts 24/7, including nights, weekends and public holidays, so a generator that fails during an outage does not have to wait for office hours.
Is every service available across Gauteng?
Yes, in every region we cover: Johannesburg, Pretoria & Centurion, Ekurhuleni / East Rand, West Rand and Vaal Triangle / Sedibeng. Diagnosis, servicing and most repairs happen where the generator stands; when a part needs a workshop, such as an alternator going for a rewind, we remove it and refit it afterwards. See service areas.
Need a generator technician?
- 24/7 operations
- We Arrive Within 1–2 Hours (usually within 1 hour)
- Free callouts and quotations