Swing Internal Gear --- every 500 hours MAINTENANCE CAUTION: Before lubricating the swing bearing, lower the bucket and the blade to the ground. Stop the engine, and place the pilot control shut-off lever to the LOCK position. Lubrication and rotation of the upperstructure must be done by one person only. Be sure to check that no personnel are present around the machine before starting work. 1. Remove the cover from the bottom center of the undercarriage. Check if grease inside is cloudy due to mixing of water or dirt. 2. Apply grease via grease fitting by the quantity shown in the table 3. In order to apply grease evenly to the swing gear, raise the bucket approximately 200 mm (8 in) above the ground. While swinging the upperstructure at approximately 90° intervals until one full turn is made, add grease at each interval. Greasing Quantity 0.2 L (0.21 US qt) Total Grease Capacity 3.2 to 3.5 L (3.4 to 3.7 US qt) Control Lever Universal Joint --- every 500 hours or yearly Pull up the rubber boots under the right and left control levers, remove two screws (1) to remove bracket (2). After moving the rubber boots upward, add grease to the four places of the pilot valve pushers as indicated by arrows. 7-20 1 2 M1M7-07-025 M1M7-07-026 M1M7-07-016
Tilt Mechanism --- every 250 hours 1. Remove bolts (1) from the top of the tilt mechanism and remove cover (2). MAINTENANCE 2. Coat the full length of operation bolt (3) with grease. Recommended grease: MOLYKOTE EM-30L manufactured by Dow Corning Toray Co., Ltd. 7-21 3 2 1 M1M7-07-077 M1M7-07-078
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