1： The insufficient oil supply of large concrete mixer leads to low output speed and torque

辦法：供油液壓泵吸油口過濾器堵塞，此時可清洗濾油器；油液鉆度過大，此時可更換適合的油液；軸向或徑向間隙過大等原因等造成，此時要研磨定子或其他有關零件，使軸向間隙符合要求。

Solution: if the filter at the oil suction port of the oil supply hydraulic pump is blocked, the oil filter can be cleaned; if the oil drill is too large, the suitable oil can be replaced; if the axial or radial clearance is too large, the stator or other relevant parts should be ground to make the axial clearance meet the requirements.

二：大型自上料水泥攪拌車液壓馬達的原動機功率或轉速不當導致輸出轉速和輸出轉矩低

2： The output speed and torque of hydraulic motor of large-scale concrete mixer is low due to improper power or speed of prime mover

辦法：原動機功率不匹配，此時需要更換原動機，使之與液壓泵功率匹配；原動機轉速低于額定轉速，此時可選用轉速滿足要求的原動機。

Solution: if the prime mover power does not match, the prime mover needs to be replaced to match the power of the hydraulic pump; if the prime mover speed is lower than the rated speed, the prime mover with the rotational speed meeting the requirements can be selected.

三：大型自上料水泥攪拌車各連接處密封不嚴，有空氣混入

3： The joints of large-scale concrete mixer are not tightly sealed and air is mixed in

辦法：檢查和緊固各連接處，提高密封性能。

Solution: check and tighten the joints to improve the sealing performance.

四：工作介質污染，液壓馬達內部通道被堵塞

4： The working medium is polluted and the internal channel of hydraulic motor is blocked

辦法：拆解，仔細清洗并更換清潔的工作介質。

Solution: disassemble, carefully clean and replace clean working medium.

五：大型自上料水泥攪拌車配流盤和葉片磨損，內泄漏大

5： The valve plate and blade of large concrete mixer are worn and the internal leakage is large

辦法：修復或更換有關零件。

Solution: repair or replace the relevant parts.

六：大型自上料水泥攪拌車液壓系統(tǒng)中單向閥密封不良

6： Poor sealing of check valve in hydraulic system of large concrete mixer

辦法：修理單向閥閥座或更換有關零件，使閥座與鋼球嚴格密合。

Solution: repair the check valve seat or replace the relevant parts, so that the valve seat and steel ball are tightly closed.

七：液壓系統(tǒng)中溢流閥失靈

7： Overflow valve failure in hydraulic system

辦法：修理或更換溢流閥。

Solution: repair or replace the relief valve.