24. SERVICE PROCEDURE 24.4 EVERY 250 HOURS SERVICE 24.4.1 CHANGE OIL IN ENGINE OIL PAN, REPLACE ENGINE OIL FILTER (FULL-FLOW AND BYPASS) CARTRIDGE WARNING The oil is at high temperature after the engine has been oper- ated, so never change the oil immediately after finishing opera- tions. Wait for the oil to cool down before changing it. Prepare the following. Container to catch drained oil: Min. 54 ¬ capacity Refill capacity: 54 ¬ (14.36 US gal, 11.88 UK gal) Filter wrench 1. Set a container to catch the oil immediately under the drain valve under the chassis 2. Remove drain plug 1 , then loosen drain valve 2 slowly to avoid getting oil on yourself, and drain the oil.
Be careful not to loosen the drain valve too far and deform the stopper pin inside the valve. AE134090 3. Check the drained oil, and if there are excessive metal particles or foreign material, please contact your Komatsu distributor. 4. Tighten drain valve 2 and drain plug 1 . Tightening torque Drain plug 1 , drain plug 2 : 68.6 ± 9.81 N•m (7 ± 1 kgf•m, 50.6 ± 7.2 lbft) 5. Using the filter wrench, turn the 2 full-flow filter cartridges 3 and 1 bypass filter cartridge 4 to the left to remove them. When doing this, to prevent getting oil on yourself, do not carry out this operation from immediately under the cartridge.
In particular, if this operation is carried out immediately after stopping the engine, a large amount of oil will come out, so wait for 10 minutes before starting the operation. 3-49