mucking loader operating system has the distribution of multi-way valve and pilot operation, in general the use of wheeled mucking loader is the distribution of multi-way valve, in use, if the multi-way valve problems, can not be effective operation of the tunnel mucking loader, mucking loader, pipe raking machine, folding tail slag raking machine, tunnel mucking loader then how should be resolved?
1. All work device power is insufficient: the main safety valve failure, so can not establish normal working pressure.
2. Some work equipment is not functional enough. Moving arm, bucket rod, bucket, left and right action is not enough, the main pressure reducing valve failure.
3. Insufficient power of the working device (boom raise or lower, bucket open or close, bucket rod extend or retract): if the working device performs two actions (such as bucket rod retract), the auxiliary pressure reducing valve will malfunction if the pressure is insufficient when extending, please check the oil filter in the hydraulic oil tank (whether there is a damaged seal in the oil filter). Slag raking machine, pipe jacking tunnel mucking loader, folding tail slag raking machine, mucking loader.
4. When the operating handle is in the middle position, moving arm, bucket rod and bucket towards the no-load side (such as moving arm, bucket open, etc.) to move. When the pressure is lower than the specified pressure, the secondary safety valve opens. The safety valve cannot reach the pressure required for cylinder loading.
