John Deere — 8. Install engine oil pump assembly.

A John Deere service procedure — check it applies to your exact model before use.

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Procedure

1. 9. Install crankshaft rear oil seal housing, oil seal,
2. 10. Install timing gear cover. Install front crankshaft
3. 11. Install oil pan.
4. 12. Install engine oil conditioning assembly.
5. 13. Install water pump.
6. 14. Install flywheel and housing:
7. 15. Install cylinder head, push rods, and rocker arm
8. 16. Install rocker arm cover. Install breather hose.
9. 17. Install exhaust manifold.
10. 18. Install aftercooler and intake manifold assembly.
11. 19. Install ignition timing sensor, coils, ICU, mounting
12. 20. Install spark plugs and ignition wires.
13. 21. Install turbocharger, exhaust elbow, coolant inlet
14. 22. Install carburetor, throttle valve, and pressure
15. 23. Install crankshaft pulley and damper.
16. 24. Install water manifold and fan pulley assembly.
17. 25. Install alternator and bracket.
18. 26. Install auxiliary water pump (if equipped).
19. 27. If equipped, install electronic governor, throttle
20. 28. Fill engine with clean oil and the proper coolant.

Source: manual:CTM82.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.