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先测电位器的标称阻值。用万用表的欧姆挡测“1”、“3”两端(设“2”端为活动触点)，其读数应为电位器的标称值，如万用表的指针不动、阻值不动或阻值相差很多，则表明该电位器已损坏。再检查电位器的活动臂与电阻片的接触是否良好。用万用表的欧姆挡测“1”、“2”或“2”、“3”两端，将电位器的转轴按逆时针方向旋至接近“关”的位置，此时电阻应越小越好，再徐徐顺时钟旋转轴柄，电阻应逐渐增大，旋至极端位置时，阻值应接近电位器的标称值。如在电位器的轴柄转动过程中万用表指针有跳动瑚象，描踢活动触』点接触不良。
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订单配送查询 HK SYSTEMS R75164 56516291 ROLLER ConVEYOR SENSOR 26-1/2X2IN D244153
DOBOY 366433 15-1/2X3/4IN STAINLESS TAKE-UP SHAFT REPLACEMENT PART D266718
MARTIN CSW6 3IN WASTE PACK SEAL D336577
BOSTON GEAR G1071LH 30 TOOTH WORM 3/4IN BORE GEAR D476158
TUCHENHAGN 932-023 VITON VALVE SEAL 2-15/16X2-7/16X3/16IN PART D255695
PENTAIR 443-2262-010 AURORA 7-5/8IN OD STEEL PUMP IMPELLER D404186
DELAL 689509 VALVE GUIDE SPRING 2-1/16IN STAINLESS PART D374319
AURORA E5T-43 PUMP SPACER 3/4IN ID 6-5/8IN OD STEEL REPLACEMENT PART B291486
RA JonES 340066 12-7/16X1IN IDLER ROLLER SHAFT 3/8IN THREAD D275108
PHILIPS 705B-60L SPRING 33X26X100X4MM D252354
HK SYSTEMS R75164 56516291 ROLLER ConVEYOR SENSOR 26-1/2X2IN D244153
DOBOY 366433 15-1/2X3/4IN STAINLESS TAKE-UP SHAFT REPLACEMENT PART D266718
MARTIN CSW6 3IN WASTE PACK SEAL D336577
TAYLOR INSTRUMENT IB-17K192 61S752-JK PRESSURE ELEMENT TRANSMITTER D324615
TUCHENHAGN 932-023 VITON VALVE SEAL 2-15/16X2-7/16X3/16IN PART D255695
PENTAIR 443-2262-010 AURORA 7-5/8IN OD STEEL PUMP IMPELLER D404186
DELAL 689509 VALVE GUIDE SPRING 2-1/16IN STAINLESS PART D374319
AURORA E5T-43 PUMP SPACER 3/4IN ID 6-5/8IN OD STEEL REPLACEMENT PART B291486
RA JonES 340066 12-7/16X1IN IDLER ROLLER SHAFT 3/8IN THREAD D275108
D5717 DRIVE WHEEL 6IN OD 3-15/16 ID 2IN THICK REPLACEMENT PART D413539
SPOTTON SKN5-517-08 SEAL REPAIR KIT 3-1/2 IN HYDRAULIC CYLINDER PART B452460
C&J MACHINE 14-13/16IN LENGTH 5/8X1IN OD STAINLESS SHAFT D378593
FEDERAL MOGUL BRILLIANT 12X2X1-1/2IN 24GRIT GRINDING WHEEL D485910
EATON TTC-16 3/4 IN STEEL STRAIGHT HOSE HYDRAULIC FITTING B446456
WORTHINGTON 52768-30 STEEL SHAFT COLLAR & SET SCREW ASSEMBLY D495948
MILTON ROY 0298-0013-075 DIAPHRAGM 5-1/4 IN OD D474423
ALFA LAL 9611923032 SERVICE KIT FOR EPDM LKB ISO 76 D348260
3044-1 31-1/8IN LENGTH 10x20MM OD STAINLESS SHAFT D446311
GARDNER DENVER HAB117X BUMPER D450367
WORCESTER ConTROLS TRK44T BALL VALVE 1/2 IN REPAIR KIT D420538
STEARNS 6-3-63206-09 COIL 230V-AC BRAKE REPLACEMENT PART D316208
ATOMUFFLER 10 1IN NPT PNEUMATIC MUFFLER SILENCER REPLACEMENT PART B314721
ARPAC 189852.000 1IN BORE 26-1/8X3IN PINCH ROLLER ConVEYOR D380974
MARTIN C10144 14-1/2 DEGREE IRON SPUR GEAR 144T TEETH 1-15/16IN D240225
MARTIN B1254 3 5/8 IN CAST IRON BEVEL GEAR REPLACEMENT PART D240456
MILLER 051-KR011-138 base-LOK PISTON ROD SEAL KIT 1-3/8IN CYLINDER D476320
3M 78-8052-6578-8 KNURLED ROLLER 2-11/32 IN TOTAL LENGTH 3-4 IN DIA. D445314
GRACO 172200 PUMP PRIMING PISTON 3-5/8X3/8IN STAINLESS D274549
GLOBE G1645 STEEL SPUR 3/4IN ID GEAR REPLACEMENT PART D249806
DOBOY 134-66491 ZINC PLATED 2-3/8IN OD 1IN ID CLUTCH DISC D266948
KOFAB 86-30-1 1X1-1/4IN SHAFT 13X4IN ConVEYOR PULLEY D356401
MORSE 322439 100-3 OFFSET link REPLACEMENT PART D357191
WATTS 0887277 1-1/4-2 IN RK009 M1VT REPAIR KIT RELIEF VALVE D292602
PHD CTS5U 50x25-BB-Z1-H901 REPAIR KIT PNEUMATIC CYLINDER D410971
7/16IN HEX SHAFT 14-1/8X2-1/16IN ROLLER ConVEYOR D403905