Metering Unit, Replace
Important: For the
entire operation, it is essential to work in a clean
environment.
- Dirt in the area of the metering unit must be avoided.
- Even minute dirt particles invisible to the naked eye can cause
major problems with engine performance.
- Particles as small as 0.3 mm can be critical!
- Do not wear gloves.
- Do not fit any metering unit that has been dropped.
- Disconnect battery after fault tracing. Before using the
metering unit, wait a few minutes to avoid the system working
autonomously.
Remove
3. |
Raise vehicle by its full height
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4. |
Unclip wiring harness (3) from bracket
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5. |
Separate wiring harness plug for metering unit
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Unclip wiring harness plug (4)
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6. |
Remove metering unit (2)
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8. |
Remove seal ring
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Remove seal ring (1) from high pressure pump
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10. |
Check 2x fuel supply bores (arrow) for dirt
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Install
11. |
Insert new seal ring
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Coat new seal ring (1) with engine oil and fit in high pressure
pump
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12. |
Metering Unit, insert
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Apply new engine oil to the O-ring (1) of the metering unit
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14. |
Connect wiring harness plug for metering unit
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15. |
Clip wiring harness into bracket
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16. |
Lower vehicle by its full height
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17. |
Connect battery
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Attach negative connection to ground terminal
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18. |
Programme transient memory
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19. |
Reset learned values of high pressure pump with Tech 2
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Confirm "Replace pump" with "Yes"
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20. |
Carry out seal test on metering unit
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Carry out fuel leak test
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21. |
Visual inspection
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Check metering unit for fuel leak
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