John Deere — 18. Install aftercooler and intake manifold assembly.

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

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Procedure

1. 19. Install ignition timing sensor, coils, ICU, mounting
2. 20. Install spark plugs and ignition wires.
3. 21. Install turbocharger, exhaust elbow, coolant inlet
4. 22. Install carburetor, throttle valve, and pressure
5. 23. Install crankshaft pulley and damper.
6. 24. Install water manifold and fan pulley assembly.
7. 25. Install alternator and bracket.
8. 26. Install auxiliary water pump (if equipped).
9. 27. If equipped, install electronic governor, throttle
10. 28. Fill engine with clean oil and the proper coolant.
11. 29. Perform engine break-in and standard

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.