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Diesel Generator Maintenance

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Diesel generator will last long hours endlessly as a power supply source and additionally as a standby or during emergency power needs.


They need less maintenance as a result of their durability, reliability   sturdiness characteristic and also they are considered cheaper to operate attributable to the low fuels costs as compared to the other kinds of fuels such as gasoline and propane.


Bharat Helpline provides Diesel Generator Repair and Maintainence of Various Brand like Cummins (Sudhir), Ashok Leyland, Kirloskar Green, Mahindra, R&H


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Principal reasons for preventive maintenance programs:

Reliability: Diesel power systems give standby power to several essential applications together with hospitals, airports, military installations, telecommunications, nuclear plants, knowledge systems.

Performance: Preventive maintenance greatly reduces the chance that an interior or appurtenant element malfunction can cause the generator to provide scarce power.  By distinguishing issues before generator power is required, users will schedule backup power whereas the first standby unit is being maintained.

Safety: element failure presents risks each to personnel on site and to those wishing on the output of the generator set.  Preventive maintenance programs are designed to discover traditional life-cycle deterioration of parts at intervals the system and replace those parts before they fail.

 Economics: Early detection of internal or external issues permits the correction of these issues before a failure happens.  This yields vital savings through shorter down times and lower repair prices.  It will stop larger economic losses that might occur if a standby system did not return on-line once required.


They can stand up to significant load for long hours and start off the power supply on full load within minutes and must be regularly maintained to ensure they provide quality power throughout their service life. The most effective generator maintenance practice is following the maintenance schedule provided by the manufacturer of the generator to ensure maximum service time for the generator and proper operation when it's called upon to provide power.


Having a well-designed and well-maintained standby power system is the best protection against utility power outages .For hospitals and other health-care facilities they can be grievous. For businesses like data centers, the outages can be tremendously expensive

The preventive maintenance tips for the diesel generator that guarantees uninterrupted power supply that is innocuous and consistent for all the requirements intended for. They include the following aspects:


Routine General Examination

A-Check (Daily routine Check)


1. Check oil level.

2. Check cleanliness of DG

3. Check Battery Voltage

4. Check any Leakage

5. Check all filter condition

6. Check oil Level

7. Check coolant Level

8. Check V-Belt condition



B-Check (Every 300- 350 Hrs.)


1. Change oil.

2. Change oil filter, fuel filter, bypass filter.

3. Change Air Filter.

4. Change water Separator

5. Radiator cleaning with chemical


C-Check (Every 800-1500 Hrs.)

1. Change oil.

2. Change oil filter, fuel filter, bypass filter.

3. Change Air Filter.

4. Change water Separator

5. Radiator cleaning with chemical

6. Check All Electrical terminal & thimbles

7. Check pollution level



D-check (Every 3000- 5000 Hrs.)


1. Complete DG set should be dismantle.

2. Turbo charger service

3. Injector Pin service

4. Cylinder Head service

5. PT Pump service &

6. Repeat same B-Check process.


If your DG set running hours more than 10,000 then in D-

Check you should need to be

1. Change Piston Bearing,

2. Change nozzles,

3. Piston Cylinder also need to be change.

4. Change Canopy filter if require

5. Check pollution level