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Adjust WEVB System and Valve Clearance of Diesel Generator Set

Apr. 27, 2023

The diesel generator set WEVB system is an auxiliary braking device, belonging to the engine retarder. It is based on the traditional butterfly throttle valve exhaust auxiliary braking device, which can further improve the braking efficiency of the engine. The main functions of the diesel generator set WEVB system are as follows.


diesel engine generator


1. Slowly rotate the diesel engine so that the scribed line on the flywheel housing aligns with the "OT" mark on the flywheel. At this point, the piston of cylinder 1 is at the top dead center position of the compression stroke (the intake and exhaust valves of cylinder 1 are closed).


2. Use a flat screwdriver (screwdriver), 14mm ring wrench, and a feeler gauge to check and adjust the valve clearance. The inlet valve clearance is 0.20mm, and the exhaust valve clearance is 0.30mm.


Attention: When detecting valve clearance, the diesel engine should be in a cold state - below 60 ℃. When the feeler gauge slides between the valve stem top and rocker arm, and there is a feeling of blockage and sticking, the measured clearance value is accurate.


3. At this point, adjust the clearance of the valves for the first, second, third, and sixth cylinders of the four cylinder engine and the first, second, third, sixth, seventh, and tenth cylinders of the six cylinder engine (measured from the crankshaft pulley end). After adjusting the clearance with a feeler gauge, tighten the lock nut of the rocker arm and recheck the valve clearance until it meets the requirements.


4. Check or adjust the valve clearance.


5. After adjusting the clearance with a feeler gauge, tighten the locking nut of the rocker arm and recheck the valve clearance until it meets the requirements.


6. Rotate the crankshaft by another 360 °, or mark the vibration damper and turn it by 360 °. At this point, adjust the clearance of the 4th, 5th, 7th, 8th and 4th, 5th, 8th, 9th, 11th, and 12th valves (measured from the crankshaft pulley end) of the four cylinder engine and the six cylinder engine.


7. Adjust the valve clearance.


8. Similarly, loosen the rocker arm lock nut and use a feeler gauge to skillfully tighten the rocker arm lock nut.


Diesel generator sets are widely used in hospitals, hotels, hotels, real estate and other industries, and play an irreplaceable role in the national economy. The above is about how to adjust the diesel generator set WEVB system and valve clearance, which Starlight Company has sorted out for users. I hope you can operate the diesel generator set in strict accordance with the regulations.


Starlight Power has advanced testing equipment, modern production technology, professional manufacturing technology, perfect quality management system, and strong technical research and development capabilities. It can provide 3KW~2500KW various specifications of ordinary, automatic, four protection, automatic switching, low noise and mobile generator sets, high quality and low energy consumption to meet the diverse power needs of customers, and can also meet users with different voltages and different frequencies. It is required to create a parallel power supply system for multiple units. If you are interested in our product or any question on generator, welcome to send email to sales@dieselgeneratortech.com.

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