MAN B&W 18V23L-V0 Main Engine on board the vessel at Zanzibar, Tanzania, had a major accident, damaging the crankshaft, cylinder liners, piston, and other parts. RA Power Solutions was approached by the leading shipping company based in Zanzibar, Tanzania to inspect the damaged crankshaft and repair if possible.

The crankshaft and Main Journal details are as follows:

S. No.	Crankpin and Main Journal Details
1.	Engine Make	MAN B & W
2.	Engine Model	18V23L-V0-220
3.	Crankpin Diameter Standard	185.00 MM
4.	Crankpin Bearing Width	78+78 MM
5.	Main Journal Diameter	220.00 MM
6.	Main Journal Bearing Width	112.00 MM
7.	Place of Execution of Grinding of Crankpin	Zanzibar Anchorage
8.	Name of Shipping Company	Reputed Company from Zanzibar, Tanzania

​Inspection Conducted by RA Power Solutions of Crankshaft of MAN B&W 18V23L-V0

i) On the Visual Inspection of the crankpin and main journal of the crankshaft, the damage of bearing was clearly seen; in fact, the bearing material was also found in the oil sump.

It was decided to remove the crankshaft from the engine block in order to thoroughly inspect crankpin and main journal diameter of the crankshaft. The main journal housing also required thorough inspection for any cracks, deviation in the main journal housing bore, and the alignment of the housing.

ii) The crankshaft was placed on the “V” block, the design of which was made by our technicians.

iii) The inspection in detail was conducted, including dimensional inspection report, MPI test for crack detection, Hardness test etc.

iv) While all the major parameters were observed within the limit. The crankpin Number #05, having a standard diameter of 185.00 and Main Journal Number #10, having a standard diameter of 220.00 MM, had excessive ovality, The deep line marks were also observed.

 

Action Taken by RA Power Solutions to Repair the Crankshaft of MAN B&W 18V23L-V0

i) The crankpin grinding was executed, the standard diameter of 185.00 was reduced by 1.5 MM, and the final diameter of 183.50 MM was maintained.

ii) The main journal diameter of 220.00 MM was reduced by 1.00 MM after grinding, and the final diameter was maintained as 219.00 MM.

iii) All the tolerance, surface finish, etc, were maintained strictly as per the manufacturer’s specifications stipulated in the manual.

We have been regularly executing on site crankshaft repairs and In Situ crankshaft grinding in Dubai, Fujairah, Qatar, Saudi Arabia, Oman, Iraq, Togo, Malta, Freetown, Egypt, Malaysia, Iran, Indonesia, Vietnam, Jordan, etc.

We have a team of trained technicians available 24/7 hrs and can be deputed in short notice. Some of our technicians also have a valid US VISA and can fly to South America, Caribbean countries, etc.

For more information regarding crankshaft grinding services, please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com or call us at +91 9582647131 or +91 9810012383.