Remove/Install Left Fuel Rail With Fuel Injectors - AR07.03-P-1050XGC

Engine 177 in model 463

as of model year 2019

Shown on engine 177 with code KA3 (gasoline particulate filter with sensor system)

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

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
	Risk of injury . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	General information on work on gasoline direct injection system		AH07.00-P-2000-01A
	Remove
1	Remove left high-pressure line.		AR07.03-P-1001XGC
		: Only install upper engine cover after the leak test.
2	Remove left low-pressure line from fuel high- pressure pump, fuel supply hose, and cylinder head cover and place to side.		AR07.03-P-1130XGC
3	Remove purge line (1) at check valve and seal openings with suitable stop plugs.	Record plug	Fig 3
4	Remove noise insulation (2).
5	Remove brackets (11).
6	Mark fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) relative to respective cylinder.	On reuse of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).
7	Remove screws/bolts (3).	Unscrew screws/bolts (3) alternately by half a revolution each. Start in the center of the rail (4) and work outward. Otherwise, damage to the rail (4) will occur.
8	Remove rail (4) from fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) and seal connections with suitable stop plugs.	Record plug	Fig 3
9	Release and disconnect electrical connections of fuel injectors.
10	Pull fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) out of cylinder head and seal injector shaft holes with suitable stop plugs.		AR07.03-P-0004-03MM
		Plug	Fig 2
		Puller	Fig 1
11	Check fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) for external damage and replace if necessary.	On reuse of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).
	Install
12	Clean fuel connections at fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).		AR07.03-P-1010-04MM
		If fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) are replaced, they must be installed immediately after removing transport protection caps. Leaks can occur otherwise. For cleaning the fuel connections, hold downwards. Otherwise, failure of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) occurs.
		Assembly cleaner	*BR00.45-Z-1028-04A
13	Remove sealing packages of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) on rail (4).		AR07.03-P-0004-02MM
		Assembly cleaner	*BR00.45-Z-1028-04A
		Drift	Fig 5
14	Replace sealing rings (12, 13) of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).
15	Replace sealing rings (14) of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).		AR07.03-P-0004-01MM
		Assembly cleaner	*BR00.45-Z-1028-04A
		Assembly tool	Fig 4
16	Install fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) in rail (4) and fasten with brackets (11).	On reuse of fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8), they must be inserted in the cylinder in which they were previously fitted. Engine damage will occur otherwise. Replace brackets (11).
17	Read off injector injection quantity adjustment coding on fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) and note.	When replacing fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).
18	Insert rail (4) with fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8) in left cylinder head.
19	Tighten bolts (3).	Screw in screws/bolts (3) alternately by half a revolution each. Start in the center of the rail (4) and work outward. Otherwise, damage to the rail (4) will occur.
		Bolt, fuel distributor to cylinder head cover	*BA07.52-P-1001-01J
20	Install left fuel pressure and temperature sensor (B42/2) on rail (4).	When installing new rail (4).	AR07.04-P-0201XGC
		Use new left fuel pressure and temperature sensor (B42/2).
21	Install noise insulation (2).
22	Attach purge line (1) at check valve.
23	Attach left low-pressure line with service connection at left cylinder head cover, fuel high-pressure pump, and fuel supply line.		AR07.03-P-1130XGC
24	Install left high-pressure line.		AR07.03-P-1001XGC
		Only install upper engine cover after the leak test.
25	Read out and delete fault memory.
			AD00.00-P-2000-04B
26	Store injector injection quantity adjustment coding in engine management control unit.	When replacing fuel injectors of cylinders 5 to 8 (Y76/5, Y76/6, Y76/7, Y76/8).
			AD00.00-P-2000-04B
27	Check fuel high pressure circuit for leaktightness.
			AD00.00-P-2000-04B
			AR07.03-P-1010-04MM
	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
28	Carry out engine test run and check engine for proper operation and leak tightness.
29	Install upper engine cover.		AR01.10-P-2405XGC