MAINTENANCE 4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH FILTER SERVICE G Replace breather filter element G Drain water and sediments from hydraulic oil tank Legend for illust. Z 21503 (6) Hand wheel of main shut-off valve located between suction oil reservoir and main oil reservoir G To OPEN the valve, turn hand wheel (6) CCW to the stop G To CLOSE the valve, turn hand wheel CW to the stop A proximity switch located on the gearbox of the shut-off valve monitors the valve position. With the valve not fully open, a corresponding message will be displayed on the ECS screen in the Operator’s cab.
REMARK Before starting the engine, make sure the shut- off valve is completely open by turning hand wheel (6) fully to the left (CCW). (11) Breather filter Replace Element (C) of Breather Filter (11). 1. Remove nut (A). 2. Remove cover (B). 3. Remove filter element (C). 4. Insert new filter element and reassemble the breather filter (11). Drain Water and Sediments Drain water and sediments with machine standing an level ground and when machine was out of operation for some time. Refer to Operation section page 256 for evacuation procedure. 421