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Crankshaft maintenance requirements
Source: China Bearing Network Time: 2014-07-27
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(1) Differentiate and clear the crankshaft assembly; ensure the internal oil passage of the crankshaft is clean and unblocked. (2) Detecting the crankshaft; if there is a crack; it is necessary to replace it. Look carefully at the crankshaft main journal, the connecting rod journal and its transition circle. (5) Look at the crankshaft main journal and the connecting rod journal; after the scale exceeds the limit, the correction is corrected according to the correction level. The crankshaft journal correction is as follows: (4) View the crankshaft The hardness requirements of the neck and the connecting rod journal; it is necessary to meet the skill requirements. Otherwise; it should be re-disposed; to satisfactorily use the demand. (5) The radial runout of the crankshaft and the thrust are facing the radial runout of the common axis of the main journal; It is necessary to meet the skill needs. Otherwise, it is necessary to proofread. (6) The axis of the connecting rod journal; the parallelism of the common axis of the main journal in the whole length is necessary to meet the skill requirements. (7) The front and rear transmission gears of the crankshaft have cracks and damage. When the wear is severe, the crankshaft should be replaced. (8) If there is a crack in the crankshaft balance block bolt, it is necessary to replace it. After the crankshaft replaces the balance block or the balance block bolt; the dynamic balance test is performed on the crankshaft assembly; the unbalance amount is guaranteed to fit. Skill demand. (9) fly If the wheel or pulley bolt is cracked, scratched or stretched beyond the limit; replace it. (10) Look carefully at the shock absorber of the crankcase leg; if it is damaged, rubber aging, cracking, deformation or crack; It is necessary to replace it. (11) When the crankshaft is installed; pay attention to the bearing of the main bearing and the thrust tile. Check the axial clearance of the crankshaft and tighten the main bearing cap straight bolt and horizontal bolt as required. (Be straight; rear horizontal)
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