METHOD FOR RESTORING SLEEVES OF CYLINDERS OF TRACTOR ENGINES Russian patent published in 2003 - IPC

FIELD: restoration of machine parts, possibly restoration of worn inner cylindrical surface of steel or cast iron parts, mainly sleeves of cylinders of internal combustion engines. SUBSTANCE: method comprises steps of making builtup sleeve including worn sleeve and thin-wall new sleeve in order to restore worn sleeve according to its nominal size; placing new sleeve inside worn sleeve while forming between them gap filled with air. EFFECT: increased useful life period of sleeves of cylinders of tractor engines. 1 dwg, 1 tbl