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562-50-3D540 BUSHING
56B-46-13140 BUSHING
581-40-21340 BUSHING
707-46-11010 BUSHING
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707-76-11021 BUSHING
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707-76-11121 BUSHING
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707-76-50371 BUSHING
707-76-65140 BUSHING
22M-70-31260 BUSHING
196-72-11190 BUSHING
205-63-56480 BUSHING
21N-939-3960 BUSHING
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419-43-17590 BUSHING
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428-70-11833 BUSHING
566-40-11161 BUSHING
707-76-90411 BUSHING
234-27-31920 BUSHING
22F-70-32820 BUSHING
707-76-35420 BUSHING
561-50-82311-YA BUSHING
07137-05008-YA BUSHING
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04022-12045本产品为实拍图，但由于拍摄技术、光线、显示器亮度等因素，货物会存在一定色彩误差，请以收到的实物为准。
发货时间我们会尽快给您安排发货，因本店采用线上线下同时销售库存流动较大，下单请与客服人员确定库存数量，以免耽误亲的使用时间。
发货方式:顺丰、德邦、中通、申通、壹米滴答、安能物流、盛辉物流、货拉拉，如果对快递物流有其他要求，请提前联系咨询客服。收前请仔细检查是否损坏。

125-78-22190
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12S-43-13530
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130-842-1150
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131-50-41132
134-32-15650
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134-43-78780
134-50-62131
134-72-61390
134-72-61540
135-30-11230
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135-43-33770
135-70-33510
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13F-72-31250
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235-60-35401 CONTROL VALVE
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700-92-34000-YA CONTROL VALVE1、挖掘机在冬季起动为什么困难？不仅决定于本身的技术状况，还受外界气温的影响。冬季低温下起动更困难，主要是由如下原因所致：
⑴冬季气候寒冷，环境温度低，机油粘度增大，各运动机件的摩擦阻力增加，使起动转速降低，难以起动。
⑵蓄电池容量随温度下降而减少，使起动转速进一步降低。
⑶由于起动转速降低，压缩空气渗漏增多，气缸壁散热量增大，致使压缩终了时空气的温度和压力大为降低，使柴油发火的延迟期增长，严重时甚至不能燃烧。

⑷低温下的柴油粘度增大，使喷射速度降低，加上空气在压缩终了时的旋流速度、温度和压力都比较低，使喷入气缸的柴油雾化质量差，难以与空气迅速形成良好的可燃气体并及时发火燃烧，甚至不能着火，导致起动困难。

13Y-72-24262
140-70-12110
140-70-14230
141-10-33150
141-14-32260
141-14-34231
144-10-12720
144-10-51130
144-21-12251
144-33-11280
144-33-51330
144-70-11160
144-70-12181
144-78-11570
144-854-1280
144-874-8470
144-874-8480
144-978-1130
145-01-52130
145-70-41240
145-70-42251
145-70-42270
145-70-42320
145-70-43210
145-70-43220
14S-30-12140
14S-70-21310
14S-70-21321
14X-01-11121
14X-01-11122
14X-12-31120
14X-14-19713
14X-14-19723
14X-21-79511
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14X-32-13250
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14X-50-51530
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14X-72-51172
14X-72-54420
14X-72-54470
14X-72-54D20
14X-78-11310
14X-78-21720
14X-78-21730
14X-78-21740
14X-78-21750
14X-78-71750
14X-911-1750
14X-952-1160
14X-960-9160
14X-960-9170
14Y-03-43130
14Y-22-12360
14Y-27-41250
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150-70-13412
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150-95-21110
154-15-41270
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154-22-65860
154-30-74370
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154-61-75140
154-61-75660
154-61-75750
154-61-75751
154-69-11221
154-69-11370
154-69-11430
154-70-16220
154-70-16270
154-70-19181
154-71-21291
154-71-22471一、更换液压油时准备工作
　　1、一台挖掘机更换液压油时，应做如下准备：购买整车液压系统用的油。(液压油箱容积的2.5倍)，滤芯，洗油，3公斤面粉，绳子，封闭液压油管的油堵，(按换油的挖掘机上的油管配制)一台汽泵和大小空油桶等。准备一台正常的挖掘机。将换油的挖掘机动臂抬升到高点，斗杆及铲斗收到内点后发动机熄灭(动臂缸，斗杆缸和铲斗缸的缸杆全部伸出到顶点)。

　　2、液压油箱的清洗：将箱内的液压油全部放出，撤出液压滤芯，把泵和油箱之间的管路从泵的接口处拆开，放出管路内的油液。用洗油冲洗液压油箱和管路。用医用沙布把液压油箱内部擦净。将面粉揉和到能拉伸面的程度分成三份，用面团分三次粘干净液压油箱的里面尤其是油箱的边角处和滤芯筒。液压油箱和滤芯筒内清理干净。更换新的液压滤芯，上好盖板。

　　3、液压柱塞泵的冲洗：挖掘机上每种液压柱塞泵都有冲洗油口，(放油口)。拧开上下放油口，放出泵壳内的液压油，拧上泵下面的油堵，从泵上面的油口向泵壳内注满洗油，再拧开泵下面的油堵，放出泵壳内的洗油，反复冲洗几次后，后用汽泵把泵壳内的余油吹干净后，注满洁净的液压油，拧紧油堵即可。

　　4、更换泵进油口密封圈，(O形圈)，将液压油箱连接到泵的供油管路连接好，从液压滤芯油口(放好更换后的滤芯)向液压油箱内注满洁净的液压油。

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