The major crankshaft details of Daihatsu 8DK-28 are as follows

Inspection of the crankshaft of Daihatsu 8DK-28

• Two numbers of crankpin bearings were reported damaged.
• On inspection of the crank pins excessive ovality was observed and at the same time, it was jointly decided to check the remaining six crank pins.
• On inspection of all the crankpins eight numbers were observed to have excessive ovality against the standard diameter of 235 mm, we observed dimensions of 234.72 m to 234.86 mm hence it was decided to undertake the grinding of all eight crankpins.
• As a normal protocol, the crankpins were subject to inspection of hardness crack detection by MPI, inspection of deflection, etc.
• All other parameters have been found within limits.
• RA Power Solution team of technicians successfully executed the repair of eight crankpins in six days only.
• The undersize crank pin bearings of 0.5 mm have been also supplied by RA Power Solutions.

We are the leaders in providing onsite repair of high capacity Diesel Engines and their parts. These services have been extending all over the world for the last 43 years. We also undertake overhauling, maintenance, and repair of main and auxiliary engines on board a vessel.

We have been regularly executing the repairs in Argentina, Bahamas, Barbados, Bermuda, Bolivia, Brazil, Canada, Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Guatemala, Guyana, Haiti, Honduras, Jamaica, Mexico, Nicaragua, Malaysia, Nigeria, UAE, Togo, Spain, Madagascar, etc.

For more details on the crank pin grinding repair, marine crankshaft repair, repair of crankshaft main journal and supply of undersize Bearing please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

The post Daihatsu 8DK-28 Crankshaft Repair at Port of Paramaribo in Suriname appeared first on Crankshaft Grinding Repair.

The engine details are as follows

Following are the main observations during the inspection of the Crankshaft of MAN 7L 23/30 Engine

• All the crankpins were subject to dimensional inspection for taper and ovality except crankpin no. 3, the ovality observed on all the crankpins was between 0.16 mm to 0.27 mm. In the case of crankpin no. 3, the ovality observed was 0.66 mm. The hardness of all crankpins was observed between 220 and 230 on the HB scale.
• All the crankpins were subject to crack detection by the MPI method. High intensity, magna flux torch was used for MPI. No crack or abnormality was observed on crankpins except crankpin no. 3 on which multiple hairline cracks/ skin cracks measuring between 50 mm to 75 mm were observed.
• On visual inspection bearing line marks were observed on all the crankpins, crankpin no. 3 had deep bearing line marks.
• No damage on the radius fillet or lubricating oil hole was observed.

Execute repair of the crankshaft of MAN 7L 23/30 H Engine

• All the crankpins except crankpin no. 3 was ground and polished to the undersize of 0.5 mm. In the case of crankpin no. 3, our technicians had no option but to reduce the diameter by 1.5 mm to remove the crack observed during the MPI.
• All the crankpins were polished.
• The crankshaft was fitted with 0.5 mm and 1.5 mm undersize bearings and the engine was put on operation.
• The crankshaft of the MAN 7L 23/30 H Engine is performing satisfactorily.

RA Power Solutions Pvt. Ltd. undertakes onsite repair of crankshafts up to 700 mm in diameter. All our technicians are experienced and have undergone in-house training in our dedicated training school which is equipped with crankshafts of different profiles and diameters. The latest design of in situ crankshaft grinding equipment and the experience of our technicians in crankshaft grinding and polishing results in the maintenance of close tolerance within 10/20 microns and achievement of surface finish of less than 20 Ra value which is far better than international standards.

This blog is written by Mr. Raj Shahani (Managing Director of RA Power Solutions). He has more than forty years of experience in the field of engine repair and is a technical adviser to various shipping and heavy industries based all over the world.

For more information on crankshaft repair equipment, crankshaft repair equipment, please email us at rajshahani@rapowersolutions.com, or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.

The post crankshaft repair equipment of MAN 7L 23/30 H Engine on Board a Vessel appeared first on Crankshaft Grinding Repair.