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Removal and installation of a fuel distributive highway and injectors
Models 463.323 (M612) Highway Details of installation of a fuel distributive highway (M612)
| - Remove the trim panel of the cylinder head cover.
- Disconnect the wiring from the sensor (B4 / 6) and the pressure control valve (Y74).
- Remove the fuel injectors (21/6).
- Disconnect the fuel line (21) the pressure (19/1) and return (21/4) line - to hold the choke nut from turning, use the second key.
- Remove the fuel return line from the cooler (22) and the oil return line (21/3) - Prepare removable sealing rings.
- Remove the fuel line (21), if necessary, remove the nozzle (cm. Below).
- Installation is performed in reverse order - do not forget to replace the sealing elements.
- Finally, start the engine and check the components of the fuel path for signs of leaks, clean the memory module on-board self-test (see chap. Systems of an electric motor).
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Sprayers Details of the installation of nozzles (M612)  | - Remove the trim panel of the cylinder head cover (7 and 8).
- Disconnect the injectors (Y76) wiring.
- Remove the fuel (1).
- Release the clips (2) and remove the oil return line (3), - use the spanner wrench with a split head.
- Release the clips (2) and remove the oil return line (3), - the clips (2) are subject to replacement without fail.
- Remove the clips (4) and remove the injectors (Y76).
- Installation is performed in reverse order - do not forget to replace the sealing elements.
- Finally, start the engine and check the components of the fuel path for signs of leaks, clean the memory module on-board self-test (see chap. Systems of an electric motor).
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Models 463.333 (M628) Highway Details of installation of a fuel distributive highway (M628)
| - Remove the air cleaner (see. Section Service Component inlet air path).
- Remove the fuel injectors (21/6) and the pressure fuel line (19/1).
- Remove the bolts (2) and remove the fuel line (21).
- Installation is in the reverse order - tighten the fixing bolts only after the installation of pressure lines.
- Finally, start the engine and check the components of the fuel path for signs of leaks, clean the memory module on-board self-test (see chap. Systems of an electric motor).
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Sprayers Details of the installation of nozzles (M628) | - Remove the air cleaner (see. Section Service Component inlet air path).
- Remove the intake assembly from the sensor MAF (see. Section Service Component inlet air path).
- Otboltite and take the left side of the inlet duct (4) (see. Section Service Component inlet air path).
- Remove the right and left covers the nozzles (2).
- Disconnect the injector wiring and fuel lines (6).
- Release the clips (7), then remove and move in the direction of oil return line (8).
 | Catches must be replaced without fail! |
- Remove the clips (10) and remove the injectors (Y76).
- Installation is performed in reverse order - do not forget to replace the sealing elements.
- Finally, start the engine and check the components of the fuel path for signs of leaks, clean the memory module on-board self-test (see chap. Systems of an electric motor).
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