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十字头轴承.doc

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十字头轴承.doc

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文档介绍:BEAGLE I MAIN ENGINE :Man B&W 7S 35MC (MK-7) KAWASAKI Then HANSHIN DIESEL Works LTD Crosshead Bearing SAFETY PRECAUTIONS X Stopped engine X Block the starting mechanism X Shut off starting air supply X Engage turning gear X Shut off cooling water X Shut off fuel oil X Shut off lubricating oil Lock turbocharger rotors Data Ref . Description Value Unit D-1 Top clearance for new crosshead bearing : - D-2 Max .damaged areas 4100mm 2 D-3 Hydraulic pressure — tightening D-4 Hydraulic pressure — dismantling - D-5 Crosshead bearing cap 44kg D-6 Telescopic pipe — tightening torque 40Nm D-7 Bearing shell ,lower 9kg D-8 Bearing shell ,upper 7kg D-9 Piston rod — tightening torque 210Nm D-10 Thrust piece — tightening torque 80Nm Crosshead Bearing Checking 十字头轴承的检查 Tin — Aluminum bearings 锡-铝轴承 The top clearance between the journal and a new bearing shell is the result ofa summation of the production tolerances of the bearing ponents . 轴颈与轴瓦的顶部间隙是轴承装配成分产生的公差的总和. The top clearance for a new bearing will normally be in the range stated In Data .Note that the figures are to be used for guidance only . 一个新轴承的顶部间隙通常在数据规定的列表中记录那个数值仅做为指导. For the top clearance ofa specific bearing ,see the measurement in the Adjustment Sheet in Volume I ,OPERATION . 对于特殊轴承的顶部间隙看操作卷 1 中调节垫片的测量法. 1. Open the crankcase door at the relevant cylinder . 打开相应缸的曲拐箱道门. 2. Turn the crankthrow concerned to BDC . 把有关的曲柄臂盘到下止点. 3. Measure the clearance in the crosshead bearing by inserting a feeler gauge B etween the bearing cap and the crosshead journal at the top of the upper bearing shell .See Data . 在上轴承顶部, 轴承盖与十字头轴颈间插入塞尺测量十字头的轴承间隙. 4. The difference between the actual clearance measurement and the measurement recorded in the Adjustment Sheet (or the clearance noted for a new bearing installed later) must not exceed .If so ,the crosshead bearing must be disassembled for inspection .See Procedure 904- . 实际测得间隙的尺寸与调整垫片( 或新轴承安装后的间隙) 的尺寸之间的偏差不能大于 . 如果大于 , 这个十字头