Lint also helps clog filters prematurely. The use of the proper wiping materials will reduce or eliminate lint contamination. These wiping materials are categorized for contamination control by the degree of lint or debris that they may deposit during use. For internal hydraulic repairs, this factor itself will determine the choice of wiping material. Rust or corrosion initially present in a hydraulic system can usually be traced to improper storage of materials and component parts.
Particles can range in size from large flakes to abrasives of microscopic dimensions.
Proper preservation of stored parts is helpful in eliminating corrosion. Particles introduced from outside sources. The most common contaminant introduction areas are at the refill and breather openings, cylinder rod packings, and open lines where components are removed for repair or replacement. Contamination arising from carelessness during servicing operations is minimized by the use of filters in the system fill lines and finger strainers in the filler adapter of hydraulic reservoirs. Hydraulic cylinder piston rods incorporate wiper rings and dust seals to prevent the dust that settles on the piston rod during its outward stroke from entering the system when the piston rod retracts.