Removing and installing fuel rail with injection valves (LH-SFI) - AR07.03-P-1452F
WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE 120.980 /981
| Removal, installation | |||
| Risk of explosion | Pay attention to accident prevention regulations! | ||
| 1 | Release fuel pressure through service valve at fuel rail | see Diagnosis Manual Engine, Volume 2, Index 3.2 |
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| Figure | |||
| 2 | Remove cable duct partially at the fire wall | Model 140 For this step: ↓ Remove, install air inlet plenum. See RA Automatic Heater Control Model 140, Op. no. 83-140 |
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| 3 | Disconnect vacuum pipe from automatic transmission at the intake manifold | Model 140 | |
| 4 | Remove top parts of cover of high voltage distributor | ||
| 5 | Disconnect all the electric connectors of the wiring which run via the fuel rail | ||
| 6 | Disconnect the vacuum hose of diaphragm pressure regulator | ||
| 7 | Disconnect fuel feed pipe (17/3) and return pipe (17/2) | ||
| 8 | Unplug connectors (arrow) | ||
| 9 | Remove screws (16) | ||
| 10 | Pull fuel rail (17) together with injection valves out of intake manifold | Replace O-rings. Oil for installing. |
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| 11 | Installation is performed in reverse order | ||
| Testing | |||
| 12 | Test injection valves (Y62) | see Diagnosis Manual Engine, Volume 2, Index 3.2 | |
| 13 | Remove, install injection valves | AR07.03-P-6521F |