Preventing Hydraulic System Contamination—Folding and Drawn
IMPORTANT: Cleanliness is very important when working on hydraulic system. Prevent contamination by assembling cylinders, hoses, couplers, and valves in a clean shop area.
Leave protective caps on fluid openings until ready to make connection. When charging system, use a tractor or other source that contains clean oil, free of abrasive materials. Keep couplers clean. Abrasive particles, like sand or metal fragments, can damage seals, barrels, and pistons, causing internal leakage.
NOTE:
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Hose Holder—Folding
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Hose Holder—Drawn
To keep hose couplers clean, always place couplers in slots of hose holder (C) when hoses are not attached to tractor.IMPORTANT: To prevent contaminants from entering hydraulic system, filters must be installed near base end ports of cylinders. Additional filters are not recommended as they will restrict oil flow and adversely affect lift time due to pressure drop.
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A - Piston
B - Rod Guide
C - Hose Holder
Without filter, large dirt particles can enter cylinder and settle against top side of piston (A), where they can cut piston seal as cylinder retracts.No filter is needed on rod end port because dirt particles entering cylinder from here will settle harmlessly against rod guide (B), away from piston seal.
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