。
Check the landing stage control valve to see if the safety valve has been worn, if worn on a new one. After landing stage safety valve installation still does not change, then check for wear on the control valve spool, badly worn to a new one.
。
Check the landing stage cylinder internal leakage situation. Boom raised, to see if there is a significant free-fall situation, if the whereabouts of the boom lift stage would obviously remove the fuel tank to check if it has been worn seals need to be replaced.
3
、測量動臂液壓泵站的壓力情況,如果壓力偏低
,就進行適當?shù)恼{整
。增加壓力后仍調不上去,則說明液壓泵站損壞非常嚴重
,以及時更換
。
Measuring pressure situation boom pump station, if the pressure is low, the appropriate adjustments. After increasing the pressure is still not tune up, then the damage is very serious pump stations, as well as the replacement.