Maintenance Strategy Based on Reliability Analysis and FMEA: A Case Study for Hydraulic Cylinders of Traditional Excavators with ERRS

Table 9

Maintenance policies.

Part	Maintenance items	Maintenance cycle	Target	Executor
HC	Improving welding process	During manufacturing	To prevent leakage	Manufactures
	Assembly inspection		To prevent leakage	Assemblers
	Cleanliness inspection	Preassembly	To prevent creep and abrasion	Driver
	Inspection of working condition	Daily	To prevent creep and abrasion	Driver
	Internal leakage inspection	Daily	To prevent leakage	Maintenance crews
	Installation accuracy check	Quarterly	To prevent leakage	Maintenance crews
	Avoiding overload and external impact	After repair or replacement	To prevent crack	Driver
		Daily