Remove/Install Fuel Injectors - AR07.03-S-0004EG

Model 447, 448 with engine 274

Courtesy of MERCEDES-BENZ USA

	Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contact with fuel.	No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only. Wear protective clothing when handling fuel.	AS47.00-Z-0001-01A
	General information on work on gasoline direct injection system		AH07.00-P-2000-01A
	Remove/install
1	Remove ground line from battery		AR54.10-S-0003E
2	Remove rail		AR07.03-S-1010EG
3	Mark fuel injectors (Y62) relative to the respective cylinder	Only when fuel injectors are to be reused (Y62). : When reusing the fuel injectors (Y62) they must be inserted into the cylinder in which it was previously installed.
4	Remove fuel injectors (Y62) from the cylinder head	: If fuel injectors (Y62) are replaced, the transport protective caps on the fuel injectors (Y62) should not be removed until one hour before assembly at the earliest. This prevents leaks. Oil, which comes out during the removal of the rail and the fuel injectors (Y62), is safe. The fuel injectors (Y62) can be reused. : The fuel injectors (Y62) must be installed together with the rail.
		In case of jammed fuel injectors (Y62) ↓ Remove injection nozzles	AR07.03-S-0004-03EG
		Puller	Fig 1
	Check
5	Check fuel injectors (Y62) for external damage	For an appropriate finding, replace fuel injectors (Y62).
6	Replace sealing ring (3) for fuel injectors (Y62)	Fuel injectors (Y62) must be installed immediately after calibration of the sealing rings (3). The sealing rings (3) swell under the influence of the air humidity and can therefore be damaged during installation.	AR07.03-S-0004-01EG
		Assembly cleaner	*BR00.45-Z-1028-04A
		Assembly tool	Fig 2
7	Remove sealing package of fuel injectors (Y62) on rail		AR07.03-S-0004-02EG
		Assembly cleaner	*BR00.45-Z-1028-04A
		Drift	Fig 3
8	Replace sealing rings (1) and sealing rings (2) on the fuel injectors (Y62)
9	Install in the reverse order
10	Read out fault memory with diagnostic system and enter injector classification in the ME-SFI [ME] control unit	For installation of new fuel injectors (Y62).
			AD00.00-S-2000-04E
	Check
	Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
11	Check for leak tightness with engine running	Visual inspection only.