译文：
一台ZL40装载机在行驶过程中曾出现起步困难、行驶无力、制动后跑偏以及熄火后左前轮有少量油烟冒出且有焦糊味等现象。检查发现，制动盘和右侧摩擦片没有彻底分离，右侧制动分泵活塞没有回位。 ZL40装载机采用双管路气推油盘式制动系统。在盘式制动器7上装有4个制动分泵，两两对置地安装。当踩下制动踏板后，从空气压缩机l来的高压气体推动气液总泵4的气活塞，气活塞再推动油活塞。使制动液经油管进入盘式制动器的制动分泵活塞室并推动活塞伸出；活塞带动摩擦片将制动盘夹紧，使车轮制动。 造成盘式制动器上的制动分泵不能回位有4种可能:一是脚制动阀5的排气口堵塞，高压气体本能排人大气，造成气液总泵的弹簧不能回位，导致制动油将盘式制动器的制动分泵活塞顶死而不能回位；二是气液总泵至盘式制动器的油管堵塞，造成制动分泵活塞不能回位；三是气液总泵的弹簧本身不能回位，制动液在高压气体作用下，不能回到气液总泵的储油室，从而造成制动分泵活塞不能回位；四是盘式制动器制动分泵活塞由于制动液太脏或活塞生锈卡死而不能回位。 判断故障时，首先踩下了脚制动阀，松开踏板后听到有排气声，因而排除了{dy}种可能。然后，拧开了气液总泵至盘式制动器制动分泵的油管接头，数次踩下脚制动阀，发现接头处有制动液喷出，且有较大的压力，这就排除了第二和第三种可能。{zh1}我们判断故障出在制动分泵上。 　　排除故障的方法是，卸下盘式制动器夹钳1，将摩擦片4和防尘圈3取下，重新接上油管接头；我们希望在制动液的高压作用下将活塞顶出，但数次在高气压的情况下踩脚制动阀都没有成功，分泵活塞5既不能回位也不能顶出，被彻底卡死。于是，我们卸下夹钳的液压缸盖6，将分泵活塞推出；然后，用柴油清洗，并用0#砂纸打磨后进一步清洗,而且更换了新的矩形密封圈2。重新装复后再试机，故障已被排除。

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原文：
ZL40 loader in motion a process started there have been difficulties and unable to travel, braking, and after wandering flame front, after a small amount of smoke emitting from the left and there is Jiaohu Wei and so on. Examination found that the right side of friction disc brake discs and did not completely separated from the right side of brake Cylinder piston did not return bit. ZL40 Loader dual-pipe gas to push the oil disc brake system. In the disc brake 7 is equipped with 4 brake wheel cylinders, 22 pairs of home installation. When the pressure to the brakes after coming from the air compressor l high-pressure gas to promote gas-liquid gas-piston master cylinder 4, gas piston and then push the oil piston. So that brake fluid through the tubing into the disc brake piston brake Cylinder piston chamber and to promote out; piston driven friction plate clamping the brake disc to the wheel brake. Caused by disc brake on the brake Wheel Cylinder could not return to places 4 possible: First, 5 foot brake valve exhaust port blocking, high-pressure gas instinct platoon atmosphere, caused by gas-liquid master cylinder of the spring could not return to place, resulting in the system move oil, brake disc brake Wheel Cylinder Piston top dead and could not return to places; second is to the disc brake master cylinder gas-liquid pipeline blockage, resulting in brake Cylinder piston can not return to place; third master cylinder of the gas-liquid Spring itself can not return to position, brake fluid under high pressure gas can not return to gas-liquid master cylinder reservoir chamber, resulting in brake Cylinder piston can not return to places; Fourth Wheel Cylinder piston disc brake system, due to moving fluid dirty or rusty card dead and can not return to the piston position. To determine fault, the first depresses the foot brake, release the pedal after the hear the exhaust sound, and thus excludes the first possibility. Then, twist open the gas and liquid to the disc brake master cylinder Wheel Cylinder pipeline joints, several depresses the foot brake valve, brake fluid found in joints Department has emitted, and there is greater pressure, which precludes the The second and third possibility. Finally, we determine the fault lies in the Brake Wheel Cylinder. Troubleshooting method is to remove the clamp a disc brake, the friction plate 4 and the dust ring 3 removed, re-connect tubing connector; we hope that high-pressure brake fluid under the action of the piston top out, but the number of times in the case of high pressure stepped foot brake without success, Cylinder piston 5 can not return to the top position can not be out, was completely card dead. Thus, we remove the clamp hydraulic cylinder 6, the wheel cylinder piston launched; and then clean diesel and used further after 0 # sandpaper polished clean, and the replacement of a new rectangular ring 2. And try to re-install complex machines, failure has been ruled out.