16630-5NA0A

1. [
2. {
3. "step": 1,
4. "title": "Depressurize High-Pressure Circuit",
5. "instruction": "Disable fuel lift pump supply and crank engine until fuel pressure drops below 5 bar. Wear protective eyewear and gloves."
6. },
7. {
8. "step": 2,
9. "title": "Inspect Camshaft Follower Tappet",
10. "instruction": "Unbolt pump and slide out roller follower tappet. Inspect contact face for scouring, thermal discoloration, or excessive free play."
11. },
12. {
13. "step": 3,
14. "title": "Rotate Engine to Base Cam Circle",
15. "instruction": "Manually turn engine crankshaft until the HPFP cam lobe is oriented at its minimum lift position to allow stress-free pump installation."
16. },
17. {
18. "step": 4,
19. "title": "Fit New Viton Seal & Tighten Flange Bolts",
20. "instruction": "Fit brand new Viton radial seal ring moistened with clean engine oil. Secure flange bolts progressively in crosswise steps to 12 N\u00b7m."
21. },
22. {
23. "step": 5,
24. "title": "Torque High Pressure Line Fitting",
25. "instruction": "Hand-thread high-pressure line flare connection into pump outlet port. Torque flare nut securely to 28 N\u00b7m with a flare nut adapter."
26. }
27. ]

Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift: