Elliott Digger Derrick, Operation & Maintenance Manual, Page: 186 / 376

Cleanliness-crane EEC-0019 V1.1
Cleanliness
The long life of a crane’s hydraulic components is dependent on keeping dirt out
of the system. Whenever hydraulic lines are disconnected, clean the adjacent area, as
well as the point of disconnection. Immediately cap or plug openings to prevent entry of
dirt. Clean all parts and cover to keep clean.
If evidence of foreign particles is found in the hydraulic system, flush the system.
Inspect all sealing elements when disassembling and assembling hydraulic systems.
Always install new O-rings on ORFS fittings when removing and reinstalling. Hoses
should be installed so any bending is with natural curvature.