Wartsila 8L20 having Damage Crankshaft	Damage CR Pin of Wartsila 8L20 Engine

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Inspection of the crankshaft of Wartsila 8L20 and Observation

1. On Initial inspection of the crankshaft it was found that the crankpin number #05 was damaged.
2. On further investigation our technicians were surprised to note that the crankpin having standard diameter of 180 MM was already undersized by 2.00 MM and this job was done by a company based in Greece.
3. The excessive taper was observed on the crankpin and no radius fillet profile was made by the crankshaft repair company.
4. Due to the taper in the crankpin number #05 of the wartsila 8L20 crankshaft, the connecting rod was not moving freely and the bearing was developing line marks.
5. It was a challenging job for RA Power Solutions technicians to rectify the taper, which was developed due to application of wrong equipment and process by a company based in Greece.

Crack Detection of CR Pin with MPI	Deep Scoring Marks on CR Pin

Action Taken By RA Power Solutions to Successfully Repair Wartsila 8L20 Crankshaft and To Save it from Rejection

With our experience of more than 44 Years in repair of the crankshaft, latest design of equipment, and experienced technicians, we were able to successfully repair the crankshaft by under-sizing the crank pin and maintaining the final size of 177.00 MM. The crank pin was undersized by 3.0 mm.

CR Pin Grinding Under Process	Polishing of CR Pin after Onsite Grinding

The radius fillet profile of both the sides was prepared and maintained, as per the Wartsila 8L20 specifications stipulated in the maintenance manual.

The engine was commissioned in presence of our technicians and performance was found satisfactory.

For more information regarding crankshaft grinding services, Wartsila 8L20 crankshaft repair, in situ grinding of crankpin, onsite crankshaft grinding repair, insitu crankshaft inspection, crankpin repair, on site crankshaft repair and onsite crankshaft repair services, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.

Final Polishing of CR Pin	CR Pin after grinding & Polishing

The post Wartsila 8L20 Crankshaft Repair at Togo | RA Power Solutions 44 Years Experience appeared first on Crankshaft Grinding Repair.

The significant technical details of the crankshaft of Wartsila 4L20 are as follows:

The following are the main observations on the crankshaft of Wartsila 4L20 by our technicians:

• Our two technicians boarded the vessel at Chennai port and inspected the crankshaft in which repeated failure of crankpin bearings was reported.
• After removing the connecting rods all four crankpins were subject to the following inspection:
• Crankpins of Wartsila 4L20 engine crankshaft were subject to a hardness test and hardness was observed within the range of 260 to 290 on the HB scale. The crack detection was undertaken of all the crankpins by magnaflux torch and no cracks were observed.
• As a matter of routine, our technicians also checked the deflection of the crankshaft and were observed within limits.
• During the dimensional inspection of the crankpin, excessive ovality was observed against the standard diameter of 180 mm. The crankpin diameter was observed ranging between 179.60 mm to 180.00 mm.

The crank pin readings before grinding are mentioned below:

• Considering the above readings of taper & ovality it was decided to undertake the grinding of all four crankpins of Wartsila 4L20 engine crankshaft. In the case of this crankshaft the crankpin bearing width is minimal i.e. 71 mm only.
• RA Power Solutions technicians carried with them a special-purpose crankshaft grinding equipment tool that can be inserted on the crank pin diameter from the inspection window.

• The grinding of all four crankpins was undertaken and the diameter of the crankpin was maintained between 179.48 mm to 179.50 mm.
• The reading of the final dimensions after grinding are pasted below:

Achievement of RA Power Solutions technicians in the successful repair of the crankshaft of the Wartsila 4L20 engine

1. The onsite grinding of crankpins of the Wartsila 4L20 engine is complicated because the crankpins’ width is only 71 mm further the counterweights are positioned in such a way that it is difficult to insert the onsite crankshaft grinding machine.
2. Most of the companies based in Europe, Singapore, and worldwide do not have the tooling to undertake the grinding of the crankpins of Wartsila 4L20 due to their complicated design and small bearing width of 71 mm only.
3. RA Power Solutions with an experience of forty-three years in onsite repair of crankshaft is also the manufacturer and largest seller of onsite crankshaft grinding machines in the world.
4. As a manufacturer, we design the equipment according to the site requirements resulting in the successful repair of the crankshaft. Ours is the only company in the world that can undertake the grinding while sailing the vessel.
5. We undertake onsite repair of the crankshaft of 700 mm diameter including Wartsila engines like 8L20, R22H,824TS,12V32,16v32, L32, ZAV 40, 6ZLA 40 etc.

RA Power Solutions has been extending onsite crankshaft repair services for the last more than four decades. All our technicians carry seaman books and can fly to any destination in the world quickly. We carry the grinding machine and tooling as accompanying baggage which saves time. Few of our technicians also possess American VISA and can travel to South America, the Caribbean, etc.

We have been regularly executing the repairs in Madagascar, Oman, Qatar, Philippines, Bahrain, Srilanka, Bangladesh, Myanmar, Turkey, Nigeria, Greece, Saudi Arabia, UK, Dubai, Malta, Cyprus, Singapore, Malaysia, Colombia, Indonesia, Hong Kong, Spain, Netherlands, Dubai, Portugal, Estonia, Morocco, Belgium, Vietnam, Canada, Jordan, Libya, Kuwait, Egypt, Morocco, Yemen, Bahrain, Tunisia, Sudan, Oman, Algeria, UAE, Iraq.

For more information on crankshaft grinding equipment, Wartsila Engine Crankshaft Grinding, and Wartsila Engine Crankshaft 4L20 Repair On Vessel, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

The post Wartsila Engine Crankshaft 4L20 Repair On Vessel | Wartsila Engine Crankshaft Grinding appeared first on Crankshaft Grinding Repair.