. MAINTENANCE SERVICE PROCEDURE MAINTENANCE SERVICE PROCEDURE 4 - 60 8. Remove mounting bolt (6) o f filter cover (5) at the top of the tank, then remove the cover. When doing this, the cover m ay fly off under the force of spring (7), so keep the cover presse d down when removing the bolts 9. Remove spring (7) and bypas s valve (8), then take out elemen (9). Check that there is no forei clean it. gn material inside the tank, then set bypass valve (8), spring (7) cover O-ring. If it is damaged o 10. 11. Install new element (9), then and cover (5) on the tank. When doing this, check the deteriorated, replace it. 12. Remove 6 bolts (11), then re 13.
Pull the top of rod (12) from t he top and remove strainer (13). Remove any dirt stuck to stra 15. When installing the cover bo lts, push down the cover and tighten the bolts evenly. er port (F) to the specified level, then install cap (F). 16. Add engine oil through oil fill er port (F) to the specified level, 17. Check that the hydraulic oil is at the standard level. For details, see "CHECK OIL LEV EL IN HYDRAULIC TANK, ADD OIL (PAGE 4-41)". 18. Run the engine at low idle, a nd extend and retract the steering, bucket, and lift arm cylinders 4 to 5 tim es. Be careful not to operate the cyli nder to the end of its stroke (stop approx. 100 mm (3.9 in ) before the end of s troke).
NOTICE If the engine is run at high speed imm ediately after startup or a cylinder is pushed up to its stroke en d, air taken inside the c ylinder may cause damage to the piston pac king.