. MAINTENANCE SERVICE PROCEDURE CHANGE OIL IN HYDRAULIC TANK, REPLACE HYDRAULIC FILTER ELEMENT WARNING stopped, and may cause burns. Wait for the drain plug (3). 4 - 56 EVERY 2000 HOURS SERVICE Maintenance for e very 50, 100, 250, 5 00 and 1000 h ours service should be carried out at t The empera temperature to go down before starting the work. When removing t he oil filler cap , turn it slowly to releas e the in ternal pressure, Refill capacity: 129 liters (34.08 US 1. Lower the buc ket horizontally to th e groun d and apply the parking brake, then stop the 2. Remove bolts (1), then remove co 3. Remove oil fill 4. Set a containe r to catch the oil un der drain plug 5. Remove drain 6.
Open drain va lve (4) gradually an d drain t he oil. 7. tighte Tightening torque 6 ± 9.8 Nm (7.0 ± 1.0 kgm, 50.6 ± 7.2 lbft) Drain plug (3): 68. 6 ± 9.8 Nm ( 7.0 ± 1. 0 kgm, 50.6 ± 7.2 lb Drain valve (4): 63 .7 ± 14.7 Nm (6.5 ± 1.5 kgm , 47.0 ± 10. 8 lbft)