1 when the crankcase crankshaft housings serious deformation (such as bearing hole for the oval), by the above two methods are not solutions, only with the method of the set to exclude. The method is: in boring machine, computer processing the crankcase bearing hole, boring the crankcase bearing big hole, then use aluminium alloy or other metal processing a new bearing sleeve, and hot pressing method will new bearing sleeve bearing pressure people in the crankcase, then install crankshaft bearing. This method although higher cost, but the engine maintenance assembly accuracy is quite good, and also once can for all.

2 the crankshaft bearing "outside running round" are mostly crankshaft housing is weard. The bearing mild tear and wear, can give the bearing small amount of daub around A B glue, will the self-contained bearing bond (note: glue can't put too much liquid on, otherwise it will stick to  bearing).

 
3 the plating method exclude bearing "outside running round " failure. With two the same of bearing outside diamete iron, and the middle hit a φ 6 mm holes, with iron and screw the ball bearings are blocked in case when the ball bearing plating by electroplating, send enterprise will bearing external circular copper. Bearing the electroplating later, bearing the electric plating thickness of round of o. 14 mm. Electroplating bearing external circular methods, to repair the crankcase housing fault of the severe wear to have the effect very much, and the plating outside the repair of the bearing.as the two stroke engine, its biggest characteristic is to the crankshaft installation precision is higher, long service life. Although the cost of plating bearing a little higher, but to repair import two-stroke water-cooled engine crank bearing "outside running round the" failure is concerned, price is quite cheap.



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