Which parts of the excavator boom truck can be eliminated

It is common for the boom truck to be weak or even unable to support the excavator. However, depending on the severity of the situation, the owner will choose to repair immediately or postpone the repair. However, the premise is that other actions of the excavator are normal and the construction time is urgent. According to the above fault phenomenon, we can first eliminate the problem of insufficient engine power, pressure and flow of hydraulic pump and boom cylinder.
The above parts as well as the basic engine operation and hydraulic pump pressure inspection must be checked before troubleshooting on site. If no other fault is found after inspection, the oil circuit of the boom lowering system is faulty.