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Con sâu bướm
Caterpillar drives the cooling fan hydraulically on its excavators, wheel loaders and backhoes, and the factory description of the system is explicit about why: the hydraulic fan cools the engine on demand to help reduce fuel consumption, and on many configurations a reverse function lets the operator clean the radiator cores without tools. That makes the fan pump and the fan motor service items in their own right, and it makes the part number on your old unit the only reliable way to order one.This section covers replacement hydraulic fan motors, fan pumps and gear pumps for Caterpillar 320 to 390 series excavators, G and H series wheel loaders, backhoe loaders, motor graders, compact track loaders, road rollers and off-highway trucks. Every unit is bench checked, photographed against your order and packed in a wooden case. Cross-reference work is done on request: send the number from your old part and the machine serial prefix, and we will confirm the current Caterpillar part number before you pay. Start with our 液压风扇马达诊断指南, and see the full hydraulic fan motor range for other brands.
零件： 162-0770液压风扇柱塞泵，适用于CAT 966G和972G轮式装载机。Caterpillar将其列为Pump Gp-Ps，轴向柱塞变量泵，零件手册项目名称为PUMP GP-PISTON -HYDRAULIC FAN，属于161-9693组。.
Cat再制造等效件： 10R-0855。部件制造商以Bosch Rexroth R986110070提供基础单元。.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 250-8337 hydraulic fan piston pump for CAT 120M, 140M and 160M motor graders, listed by Caterpillar as a Hydraulic Fan Piston Pump. Remanufactured reference 20R-0109.
What it is: a variable displacement axial piston pump that meters oil to the grader’s demand fan, built on the Bosch Rexroth R986110089 platform.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 235-2716 hydraulic fan pump for CAT 980H and 980G wheel loaders. The parts book item name is PUMP GP-PISTON -HYDRAULIC FAN, recorded as part of the fan pump and mounting group 235-5333.
What it is: a slipper piston pump, variable displacement, driving the fan motor 255-6805.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 254-5147 hydraulic fan pump for CAT 966H and 972H wheel loaders. Caterpillar lists it as a 32 cc basic piston pump, and the remanufactured reference is 10R-7698.
What the 32 cc tells you: the geometric displacement of the unit, which is the number that decides how much oil the fan motor receives at a given drive speed.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 265-4925 hydraulic fan motor for CAT 938H and IT38H wheel loaders. Caterpillar lists it as a Gear Motor, with the parts book item name MOTOR GP-GEAR -HYDRAULIC FAN.
Second code explained: 7029210020 appears on our unit’s maker plate. It is the manufacturer’s internal part number, not a Caterpillar number.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 255-6805 hydraulic fan motor for CAT 980G and 980H wheel loaders, listed by Caterpillar as a fixed displacement motor.
作用： it is the working side of the cooling fan circuit on the 980H. The pump that drives it is 235-2716, and the two fail for different reasons.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 254-5146 hydraulic fan piston pump for CAT 950H, 962H and IT62H, listed by Caterpillar as a Hydraulic Fan Piston Pump and described in their own catalogue as a variable displacement axial piston pump. Component cross-reference 10R-7697.
Published dimensions: height 8.3 in, length 10.8 in, carbon steel construction.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 191-2942 hydraulic fan piston pump for CAT 950G II, 962G II and IT62G II, listed by Caterpillar as a Hydraulic Fan Piston Pump with the parts book item name PUMP GP-PISTON. Component cross-reference 10R-7387.
What it is: a slipper piston pump, from Cat’s own older item naming, driving the cooling fan.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 161-8919 hydraulic fan piston motor, listed by Caterpillar with an overall length of 283.5 mm, item name MOTOR GP-PISTON.
Fitment: one of the widest in the Cat loader range, covering 966G, 972G, the Series II versions, 966H, 972H, 824H, 825H, 980G II, 966K XE and the 966M XE and 972M XE.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 129-2413 piston motor, listed by Caterpillar as a Piston Motor with the parts book item name MOTOR GP-PISTON, applied to the 980G wheel loader, 824G wheel tractor and 825G soil compactor with 3406 and 3406C engines.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 259-0814 hydraulic fan piston pump for CAT 345C excavators with the C13 engine, listed by Caterpillar as a Hydraulic Fan Piston Pump with the parts book item name PUMP GP-PISTON.
Fitment: 345C, 345C L, 345C UHD and the 345C material handler and mobile hydraulic power unit builds, all C13. It is not the 345B pump.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 200-3252 hydraulic fan motor, listed by Caterpillar as a fixed displacement motor with the parts book item name MOTOR GP-PISTON and the alternate group designation PS-F-43.
Fitment: 385B and 385B L with the 3456 engine, 385C family and 390D with the C18, plus the 5090B. Cross-referenced as 10R-6266.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 448-9705 axial piston pump, listed by Caterpillar as an Axial Piston Pump with the parts book item name PUMP GP-PISTON, applied to the 374F and 390F family.
Fitment: 374F L with the C15 and 390F, 390F L and MH3295 with the C18, identified by serial prefix.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 587-1312 piston pump, listed by Caterpillar as PUMP GP-PS-B, a variable displacement axial piston unit. The unit we photograph carries a plate reading piston pump, CNR 587-1312.
Trade fitment: 349 GC, 350 and 350 mobile hydraulic power unit. Caterpillar’s own applicability data for this number could not be verified, and we say so below rather than inventing a fitment list.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 505-5180液压风扇马达，适用于配备C9.3、C9.3B和C13发动机的CAT 336、345 GC、349和352挖掘机。.
Caterpillar的官方命名： Motor Group-Piston（活塞马达总成），描述为轴向柱塞马达，定量式，用于液压风扇工况。零件手册项目名称为MOTOR GP-PISTON。.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.
零件： 505-5179 suction fan slipper piston motor for the CAT 336 GC excavator with the C7.1 engine.
Caterpillar的官方命名： Suction Fan Slipper Piston Motor, with the parts book item name MOTOR GP-PISTON -FAN, SUCTION, recorded as part of the suction fan group on the 336 GC.
供货形式： 全新HTD品牌替换件，中国制造。起订量1件，木箱包装，5至8个工作日内发货。.