The major technical details of the crankshaft of Yanmar 6N165 are as follows:

Our technicians boarded the vessel and came to know that two local companies were engaged by the vessel owner to undertake the grinding of one number crankpin which was damaged. Both companies due to the non-availability of necessary tooling further damaged the crankpin and were not able to undertake the crankpin grinding.

The expertise of RA Power Solutions in the repair of small diameter and small crankpin width crankshaft

As mentioned above the crankpin diameter of Yanmar Engine 6N165 is 125 mm and the crankpin bearing width is only 48 mm, in order to undertake the grinding of a crankpin having such a small crankpin width a very compact crankshaft grinding tool is required which no other company in the world posses.

RA Power Solutions with forty-four years of experience in the field of crankshaft repair has developed a compact and dedicated tooling that is inserted from the inspection window and is placed on the crankpin with the latest technology and process followed by us.  The crank pin grinding is executed. In this case, since the crankpin was badly damaged by the local grinding company engaged by the vessel owner, we had no option but to undertake grinding to 4.0 mm undersize. The bearing was supplied by RA Power Solutions and the engine is performing satisfactorily.

Following engines, crankshaft with small crankpin diameter and bearing width can be successfully repaired onsite.

We have been regularly executing on site crankshaft repairs and crankshaft grinding in Iraq, Iran, Dubai, Oman, Saudi Arabia, Qatar, Abu Dhabi, Sharjah, Ajman, Umm Al-Quwain, Fujairah, Bahrain, Kuwait, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Malaysia, Indonesia, Madagascar, Vietnam, Grenada, Guyana, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, South Korea, Saint Vincent and the Grenadines, Trinidad, and Tobago, etc.

For more details on the Crankshaft Repair of Yanmar Engine and supply of bearings, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

The post Crankshaft Repair Of Yanmar Engine 6N165 On Board A Vessel | Experience Of 44 Years appeared first on Crankshaft Grinding Repair.

Details of Inspection of Yanmar Engine 8N280L crankshaft undertaken by RA Power Solutions technicians on board the vessel.

• The vessel reported damage to two crankpins due to the failure of the oil pump initially two crankpins were inspected and ovality ranging from 0.23 to 0.30 mm was found.
• Since it was a failure of lubricating the oil pump decision was taken to open the connecting rods of the remaining six crankpins and inspect them by taper & ovality.
• On inspection of the remaining six crankpins, it was observed that all the crankpins had excessive ovality higher than the permissible limits stipulated in the Yanmar Engine manufacturer manual.
• The bearing line marks a rough surface was also observed.
• The hardness was checked with the portable hardness tester and was observed within limits except for the few scattered high hardness spots.
• MPI for crack detection was also done and no cracks were observed.
• The radius fillet of all eight crankpins was checked.
• In case two crankpin radius fillet profiles were damaged. The reading observed of eight crankpins before grinding is as follows.

SIZE OF CR JOURNAL BEFORE GRINDING                                                                        SIZES IN MM

Action taken by RA Power Solutions technicians to repair the crankshaft of Yanmar Engine 8N280L is as follows:

• All the crankpin grinding was undertaken to the first under the size of minus 0.50 mm.
• The tolerance of diameter was maintained as mentioned in the manual.
• The radius fillet profile of two crankpins was corrected.
• The final dimensions after grinding are as follows:

Achievement of RA Power Solutions technicians in the successful repair of the Crankshaft of Yanmar Engine 8N280L while sailing

The vessel after discharging the cargo at Chennai port left for Port Klang Malaysia. The technicians worked nonstop and completed the grinding of all eight crankpins including the formation of radius fillets while sailing.

Our equipment for onsite crankshaft grinding is designed to absorb the vibration during the sailing of a vessel with RA Power Solutions technicians and equipment on board the vessel there is no need to hold the vessel.

We have been regularly executing on site crankshaft repairs and crankshaft grinding in Dubai, Oman, Saudi Arabia, Qatar, Abu Dhabi, Sharjah, Ajman, Umm Al-Quwain, and Fujairah, Bahrain, Kuwait, Iraq, Antigua and Barbuda, Belize, Dominica, Dominican Republic, Grenada, Guyana, Haiti, Jamaica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Trinidad, and Tobago, etc.

For more details on the crank pin grinding repair please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

The post Yanmar 8N280L Crankshaft Repair While Sailing appeared first on Crankshaft Grinding Repair.