RA POWER SOLUTIONS PVT. LTD.

South City, Gurugram, Haryana

n the country of Iran, diesel generating sets are widely used for power generation. One of our clients operates multiple diesel generator sets at various locations across Tehran, Iran. These generators are typically run continuously for several days, except during scheduled preventive maintenance.

The Caterpillar G3616 gas engine met with an accident and, upon preliminary inspection, was found to be damaged.

RA Power Solutions technicians arrived at the site near Tehran and inspected theCaterpillar crankpin after removal of bearing material

MAN Engine Model no. 5L 16/24 is a very common installation on vessels and the engine is used as Generator. The Crank Pin diameter of MAN Engine Model no. 5L 16/24 is only 130mm and the bearing width is 56 mm.For more information please visit our following link: https://crankshaftgrindingrepair.com/MAN-B&W-Model-5L-16-24.php

Yanmar engine crankshaft repair of all models is now possible in situ. The polishing /grinding can be undertaken without removing the crankshaft from the block.

RA Power Solutions has successfully repaired hundreds of crankshafts of Yanmar engine which have been rejected by the companies because of the nonavailability of the latest technology of equipment.

A leading power plant based in Madagascar, East Africa, reported a failure of the crankshaft of a Wartsila 9L20 diesel generating set. They have multiple Wartsila DG sets of different models. They also operate Caterpillar engines. Power plant officials were advised to open all the connecting rods and visually inspect the crankpins of the Wartsila 9L20. Damage to crankpin number #09 was reported. On going through the photographs of the damaged crankpin, the radius fillet on both sides of crankpin number #09 was observed to be damaged. Crankpin During Onsite Magnetic Particle Inspection TestWartsila 9L20 Engine Crankpin Inspection before Grinding RA Power Solutions two (2) technicians, along with anonsite crankshaft grinding machine, were deputed from our plant in New Delhi. The details of the engine and crankshaft are as follows: S. No. Crankpin Details 1 Engine Make Wartsila 2 Engine Model W9L020 3 Crankpin Diameter Standard 180.00 MM 4 Crankpin Bearing Width 70.00 MM 5 Grinding of Crankpin Number #09 6 Place of Execution of Grinding of Crankpin Diego Site Madagascar, East Africa 7 Name of Shipping Company Reputed Company from Madagascar, East Africa 8 Date Of Execution 28th September to 2nd October 2025 Action Taken by RA Power Solutions to Repair the Crankshaft of Wartsila 9L20 in Madagascar, East Africa i) RA Power technicians followed a standard inspection protocol, during which the damaged crankpin number 9 was subjected to a dimensional check, crack detection by MPI, hardness check, etc. A pre-inspection report was prepared. ii) On inspection of crankpin #09, excessive ovality of 0.41 mm was observed against the specified limit of 0.03 mm. The dimensional report is pasted below. Technicians also observed bearing line marks on the crankpin. Onsite crankshaft grinding of Wartsila 9L20 EngineWartsila 9L20 Engine MPI before crankpin grinding and polishing SIZE OF CR PINS BEFORE REPAIR A Aa C Cc B Bb Min STD Ovality CR-1 CR-2 CR-3 CR-4 CR-5 CR-6 CR-7 CR-8 CR-9 179.93 179.62 179.90 179.78 179.78 179.59 179.59 180.00 0.41 MM iii) RA Power Solutions carried out the repair by undersizing crankpin #09 of the Wartsila 9L20 by 1.00 mm, as the power plant had a 1.00 mm undersized bearing available. The engine was successfully commissioned in the presence of our technicians. iv) Theonsite crankshaft grinding machine, developed and manufactured by RA Power Solutions, is of the latest design and maintains a tolerance within 0.02 mm (20 microns) after grinding. The surface finish achieved is of a very high standard15 RA value or lesswhich is highly recommended for ensuring the long life of bearings and crankshafts. Wartsila 9L20 Engine crankshaft during grinding and machiningWartsila 9L20 Engine Crankpin under grinding repair Crankpin after grinding and polishing of Wartsila 9L20 EngineWartsila 9L20 Engine crankpin after grinding RA Power Solutions offersonsite crankshaft grindingand repair services under a wide range of conditions, whether on a ship at sea or at a power plant/cement plant in a remote location. All crankshaft grinding services provided by RA Power are guaranteed to ensure the satisfactory performance of the crankshaft and diesel engine after repairs. RA Power Solutions is a well-known company that provides crankshaft repair, machining, and engine overhaul services on site to the marine, industrial, and power-generating sectors all over the world. The company has been in business for more than 45 years and has completed projects in Asia, Africa, Europe, the Middle East, and South America, bringing precision-engineered solutions right to clients premises. RA Power Solutions has powerful portable machining machines and a team of highly qualified experts. This means they can respond quickly, make repairs that are

RA Power Solutions has recently undertaken successfully repair of Allen Engine Model no. PVBCS12 F crankshaft was damaged due to an accident onboard a vessel. The crankshaft is of the Main engine of a leading shipping company based in Banjul Gambia.

RA Power Solutions Pvt. Ltd.was approached by a leading shipping company based in Indonesia regarding failure of crankshaft in their two numbersof AUX Engine MAN6L 16/24.

Repair undertaken by RA Power Solutions

In the case of cylinder liners, the crack was repaired from the inside and from the outer diameter as well  by a metal lock process. We used special alloy locks and keys to repair the crack.

The two cracks in the engine block liner sitting area were repaired by a metal lock. After repairs, the proper grinding and polishing was done on the crack area to maintain the specified tolerance.

The liners were assembled in the presence of our technicians and the engine was put on operation after leak test. The performance of the engine after crack repair of cylinder liners and engine block is observed satisfactory.

We have executed successfully hundreds of jobs of damaged and cracked cylinder liners, pistons, engine blocks, and major components used in heavy equipments.

RA Power Solutions is happy to announce that we are extending crankshaft repair services in Haiti, Dominican Republic, Santo Domingo, Puerto Rico, Jamaica, Cuba, Bahamas, Virgin Island, Bani, Venezuela, and Barahona, and neighboring countries.

RA Power Solutions has forty-three years of experience in extending the repair of crankshaft services up to 700 mm diameter of crankpin and main journal. This part of the world had no facilities for repair of the crankshaft thus causing a lot of inconvenience and financial losses to shipping owners.

We have a local representative to deal with your requirement of repair of major engine components including crankshaft.

Please contact our country representative, Mr. Fabio Donati, Tel: +50946006000 Email Id: fabdon07@gmail.com and Mr. Raj Shahani, Tel: 9810012383 Email Id: rajshahani@rapowersolutions.com

RA Power Solutionshave been contacted by various ship owners and Daihatsu5DC-17installations all over the worldregardingthe problems faced by themin the crankshaft ofDaihatsu 5DC-17

Visit us:http://rapowersolutions.com/BlogDetails.aspx?blogname=Crankshaft-Repair-of-Daihatsu-5DC-17-Save-Crankshaft-from-Rejection

All models of Daihatsu engine crankshaft are machined or polished in situ without removing them from the block. It is possible to undertake the machining of the crankshaft even while sailing of the vessel.

There is no need of holding the vessel in anchorage. The most popular Daihatsu engine models are 5DC-17, 6DLB-19, 5DK-20, 6DK-20, 6DK-28, 8DK-28, 6DL-16, etc.

Onsite crankshaft repair is now possible even for the high RPM engine crankshaft like Daihatsu, Yanmar, MAN B&W, Caterpillar, Pielstick, Cummins, Deutz, Volvo Penta, etc which have small crankpin diameters and bearing lengths.

The crankshaft grinding machine is inserted from the inspection window and grinding is done. The machine is designed to be compact and portable. RA Power Solutions extends onsite grinding up to 700 mm diameter all over the world at the lowest cost. We have been extending services for the last forty-three years.

Crankshaft repair and crankshaft polishing is undertaken by our highly skilled trained and motivated technicians. RA Power Solutions has experience of more than forty years in this field of crankshaft repair on land sites and on board seagoing vessels and off-shore anywhere in the world. We are the most respected company in the region.