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Crank Pin Bearing inspection is done in regular intervals in order to make sure the engine works smoothly without any breakdown. The steps required to remove the crank pin bearing in main engine are simple but vary according to the design of engine makers . Mostly engine comprises are of MAN B&W or SULZER.
First, open the crankcase door at the relevant cylinder that needs to be inspected
2. Then turn the crank concerned to BDC ( Bottom Dead Centre )
3. Measure the clearance in the crankpin bearing by inserting a feeler gauge at the bottom of the bearing shell on both sides.
5. The wear limit for the crankpin bearing shells is based on a judgement of the bearing condition at the time of inspection.
Note:- An average wear rate of 0.01 mm per 10,000 hours is regarded as normal.
Mount the wire guide on the top of the crankcase door opening.
Using the tackle from the frame box inside the wall, together with a tackle suspended from the platform bracket, lift the bearing cap out of the crankcase
Check out our article on Important IC engine terms https://marinelords.com/what-are-the-important-terms-of-engines/