Kubota D650-B Handbuch Seite 184

Undersize and Oversize
If the standard-size bearing cannot be employed due to ex­
essive wear of the crankpin and crank journal, employ under ­
size or oversize bearings.
For undersize or oversize bearing use, follow the precautions
noted below.
(1) 3.3 to 3.7 mm (0.1300 to 0.1457 in.)
(2) 2.8 to 3.2 mm (0.1102 to 0.1260 in.)
(3) Oil hole must be 1 to 1.5 mm (0.0394 to 0.0591 in.).
Be sure to chamfer the oil circumference with an oil stone.
(4) The crank pin must be fine-finished to higher than V\7I7V
(O.4·S).
(5) The crank journal must be fine·finished to higher than
\JV'\li1
(O.4·S).
(6) The crank journal side surface must be fine·finished to
higher than\7'V"i7V(O.4-S).
COJ9F063
188