MAINTENANCE PROCEDURE 4.9.3 EVERY 500 HOURS MAINTENANCE 4.9.3.a LUBRICATING LUBRICATING SWING COMPONENTS When lubricating the swing circle and the swing pinion, do not swing the upper structure while carrying out the lubricating. NOTE For the first 100 hours on new machines where the parts are settling in, carry out greasing every ten hours. Prepare a grease gun 1. Using a grease pump, pump in grease through the grease fittings shown by arrows. 2. After greasing, wipe off any old grease that was pushed out.
(1) Swing pinion (1 place) (2) Swing circle (1 place) When lubricating the swing circle and swing pinion, turn the chassis little by little to change the position while carrying out the lubrication. LUBRICATING WORK EQUIPMENT IMPORTANT When breaking in a new machine, carry out lubrication every 10 hours for the first 100 hours of opera- tion. If any abnormal sound comes from the greasing point, carry out greasing regardless of the inspection and maintenance interval. After carrying out digging work in water, always lubricate the pins that were under water. Prepare a grease gun 1.
Set the machine to the greasing posture shown on the right diagram, lower the work equipment to the ground, then stop the engine. 2. Using a grease pump, pump in grease through the grease fittings shown by arrows. 3. After greasing, wipe off any old grease that was pushed out. 194 WARNING