983 TRAXCAVATOR Every 2000 Service Hours Caterpillar

(23)Hydraulic Control System-Change Oil, Wash Filler Screen

1. Drain system when oil is warm.

2. Completely raise and dump bucket.

3. Stop engine. Remove fill cap slowly.

4. Open drain valve to drain oil.

5. Lower bucket cutting edge on to a 2' (0,6 m) block.

6. Move tilt control to TILT BACK and lift control to LOWER to ...

7. Lower bucket.

8. Remove filler strainer.

9. Wash strainer in clean kerosene or diesel fuel. Install strainer.

10. Install new filter elements. See item 17.

11. Close drain valve.

12. Loosen bleed plug.

13. Fill tank to above ADD mark in sight gauge.

14. Install filler cap loosely.

15. Start engine and run at 1/2 engine speed.

16. Close bleed valve when oil flows without air bubbles.

17. Raise bucket approximately 6' (1,8 m).

18. Dump bucket.

19. Remove cap and fill tank to above ADD mark in gauge. Install cap loosely.

20. Loosen bleed valve. Close valve when oil flows without air bubbles.

21. Tilt bucket back.

22. Completely raise then lower bucket.

Do not operate over relief valve pressure or allow bucket control to go into FLOAT position.

23. Remove cap and fill tank to above ADD mark in sight gauge.

24. Install cap tightly. Operate engine at high idle.

25. Completely raise, dump, tilt back and lower bucket several times.

26. Check oil level and bleed system several times during the first day of operation.

(24)Diesel Engine Valve Lash

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ALWAYS INSTALL LIFT ARM SUPPORT BEFORE SERVICING ENGINE AREA.

Check after engine has been stopped 20 minutes.

1. Remove camshaft cover.

2. Remove plug.

3. Turn flywheel to close No. 1 exhaust and inlet valves and ...

4. Allow bolt to be installed in flywheel.

5. Check lash for No. 1, No. 3 and No. 5 exhaust valves. Adjust if necessary. (See page 28).

6. Check lash for No. 1, No. 2 and No. 4 inlet valves. Adjust if necessary.

7. Remove bolt.

8. Rotate flywheel 360° to close No. 6 exhaust and inlet valves and ...

9. Allow bolt to be installed in flywheel.

10. Check lash for No. 2, No. 4 and No. 6 exhaust valves. Adjust if necessary.

11. Check lash for No. 3, No. 5 and No. 6 inlet valves. Adjust if necessary.

12. Remove bolt from flywheel.

13. Install plug.

14. Install camshaft cover.

Adjusting Valve Lash

1. Insert a cross point (Phillips) screwdriver in hole inside of cam follower.

2. Turn screwdriver clockwise to increase lash or counterclockwise to decrease lash.