GROUP 3 TESTS AND ADJUSTMENTS GROUP 3 TESTS AND ADJUSTMENTS 1. HYDRAULIC OIL CLEAN UP PROCEDURE USING PORTABLE FILTER CADDY 1. HYDRAULIC OIL CLEAN UP PROCEDURE USING PORTABLE FILTER CADDY ц Service equipment and tool ·Portable filter caddy ·Two 4000 mm Э 1" 100R1 Hoses ·Quick disconnect fittings ·Discharge wand ·Connectors Steering system use oil from hydraulic oil tank. Flush all lines in the steering system. Disassemble and clean major compon-ents for steering system. Steering components may fail if steering system is not cleaned after hydraulic oil tank contamination.
ц 1) If hydraulic system is contaminated due to a major component failure, remove and dis- assemble steering cylinders to clean debris from cylinders. 2) Install a new return filter element. Inspect filter before installing new element. For a failure that creates a lot of debris, remove access cover from hydraulic oil tank. Drain and clean hydraulic oil tank of fill the specified oil to hydraulic oil tank through upper cover. ц 3) To minimize oil loss, pull a vacuum in hydraulic oil tank using a vacuum pump. Connect filter caddy suction line to drain port at bottom of hydraulic oil tank using connector. Check to be sure debris has not closed drain port.
4) Put filter caddy discharge line into hydraulic oil tank filler hole so end is as far away from drain port as possible to obtain a thorough cleaning of oil. 5-15