Remove/Install Left Fuel Rail - AR07.03-P-1011MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Fig 1: Left Rail Components Location - Engine 176 In Model 463 Up To Model Year 2019

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

	Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers.	AS18.00-Z-0001-01A
	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
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	General information on work on gasoline direct injection system		AH07.00-P-2000-01A
	Remove
1	Detach ground line from battery	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205
		Engine 176 in model 463 (except 463.234) as of model year 2013 up to model year 2019	AR54.10-P-0003GW
		Engine 177 in model 205	AR54.10-P-0003LW
2.1	Remove left and right air filter housing	Engine 177 in model 205	AR09.10-P-1150MNA
2.2	Remove left-hand air filter housing	Engine 176 in model 463 up to model year 2019	AR09.10-P-1150MNA
3	Remove side heat shield of left ATL	Engine 177 in model 205	AR09.40-P-6026MNA
4	Relieve fuel pressure via service connection (1)		AR07.03-P-1460-01MNA
		Dust protection cap to service connection	*BA07.03-P-1005-01H
		Pressure hose	Fig 6
5	Unclip electrical line (3) on fuel line (4)
6	Remove ignition coil (5)	Engine 177 in model 205	AR15.12-P-2003MNA
7	Detach fuel feed (6) at diagnostic socket (1) and place to one side
8	Remove screw/bolts (26) and remove diagnostic socket (1) from left cylinder head cover
9	Remove insulation (7)
10	Detach fuel lines (4, 10) at left high-pressure pump	Thoroughly clean area around fuel lines (4, 10) at locations to be separated. Failure can occur otherwise to the fuel system. Do not kink or bend the fuel lines (4, 10). Otherwise leaks will occur on the fuel lines (4, 10).
		Box wrench bit	Fig 4
11	Detach bracket of fuel lines (4, 10) at left cylinder head cover
12	Detach bracket of the fuel line (10) at left cylinder head cover
13	Remove filler neck (11)
14	Open mounting clamp (12) on fuel hose (13)	Pliers for click clamps	Fig 3
15	Detach fuel line (10) from fuel hose (13)	Thoroughly clean area around fuel line (10) at locations to be separated. Failure can occur otherwise to the fuel system. Do not kink or bend fuel lines (10). Otherwise the fuel line (10) can have leaks.
16	Remove insulation (14)
17	Detach fuel line (4) on left rail (15)	Thoroughly clean area around fuel line (4) on the locations to be separated. Failure can occur otherwise to the fuel system. Do not kink or bend fuel line (4). Otherwise, leaks will occur in the fuel line (4).
		Box wrench bit	Fig 4
18	Unclip engine wiring harness (16) at left cylinder head cover
19	Release and disconnect electrical connectors (17)
20	Release and disconnect electrical connector (18)
21	Unclip wiring harness (27) on left cylinder head cover and ventilation (21)
22	Remove screw/bolt (19) and remove ground line at left cylinder head cover
23	Unclip vacuum line (20) at ventilation (21)
24	Remove screws (22) and remove ventilation (21)
25	Remove fuel line (10)	Do not kink or bend fuel line (10). Otherwise the fuel line (10) can have leaks.
26	Remove hold-down tool (23) between left rail (15) and fuel injectors (24) of the left cylinder bank
27	Mark fuel injectors (24) of left cylinder bank relative to the respective cylinder	When reusing the fuel injectors (24) of the left cylinder bank. Fuel injectors (24) of the left cylinder bank must be inserted in the cylinder in which they were previously installed.
28	Push terminal block at the sidewall on the left upwards	Engine 177 in model 205
29	Remove screws/bolts (25)	Remove screws (25) alternately, in each case, by half a revolution. Begin in center of left rail (15) and work outwards. Otherwise the left rail (15) may get damaged.
30	Detach left rail (15) from fuel injectors (24) of left cylinder bank
31	Remove all fuel injectors (24) of the left cylinder bank	All fuel injectors (24) of the left cylinder bank must be removed, since the left rail (15) may only be installed together with the fuel injectors (24) of left cylinder bank. Engine oil which comes out during disassembly of the left rail (15) or from the fuel injectors (24) of the left cylinder bank is safe. The left rail (15) or the fuel injectors (24) of the left cylinder bank can be re-used. in the case of jammed fuel injectors (24) of the left cylinder bank ↓ Remove fuel injectors (24) of the left cylinder bank
			AR07.03-P-0004-03MM
		Puller	Fig 5
	Clean
32	Clean fuel connections on fuel injectors (24)	During cleaning the fuel connections must be held downwards. This ensures that no dirt gets into the openings.	AR07.03-P-1010-04MM
		Assembly cleaner	*BR00.45-Z-1028-04A
	Check
33	Check fuel lines (4, 10) for damage and replace if necessary	Engine 176 in model 463 up to model year 2019	AR07.03-P-1010-03MM
		Engine 177 in model 205	AR07.03-P-1010-03MNA
		The sealing cones for the fuel lines (4, 10) must be checked before assembly. Otherwise leaks will occur on the fuel lines (4, 10).
		Assembly cleaner	*BR00.45-Z-1028-04A
	Install
34	Replace sealing packages for the fuel injectors (24) of the left cylinder bank on left rail (15)		AR07.03-P-0004-02MM
		Assembly cleaner	*BR00.45-Z-1028-04A
		Drift	Fig 7
35	Replace sealing rings (29) and seals (30) on the fuel injectors (24) of the left cylinder bank
36	Replace sealing rings (31) on fuel injectors (24) of the left cylinder bank		AR07.03-P-0004-01MM
		The fuel injectors (24) of the cylinder bank must be installed immediately after calibration of the sealing rings (31) since the sealing rings (31) due to the influence of air humidity. Otherwise, the sealing rings (31) will be damaged during assembly.
		Assembly cleaner	*BR00.45-Z-1028-04A
		Assembly tool	Fig 2
37	Install new seal on overflow connector of the left rail (15)
38	Insert the fuel injectors (24) of the left cylinder bank marked during removal in the left rail (15) and fasten with hold-down tools (23)	When reusing the fuel injectors (24) of the left cylinder bank. Fuel injectors (24) of the left cylinder bank must be placed in the cylinder they were installed in before. Install new hold-down tool (23). Fuel injectors (24) of the left cylinder bank may only be installed again in combination with the left rail (15) (as a unit).
39	Read off the injector quantity compensation (IMA) coding on fuel injectors (24) of left cylinder bank and take a note of it	For replacing the fuel injectors (24) of the left cylinder bank.
40	Push new fuel injectors (24) of the left cylinder bank in the left rail (15) and fasten with hold- down tools (23)	For replacing the fuel injectors (24) of the left cylinder bank. Install new hold-down tool (23). Fuel injectors (24) of the left cylinder bank may only be installed again in combination with the left rail (15) (as a unit).
41	Insert left rail (15) with fuel injectors (24) of the left cylinder bank in left cylinder head
42	Screw in screws (25)	Screw in screws (25) alternately, in each case, by half a revolution. Begin in center of left rail (15) and work outwards. Otherwise the left rail (15) may get damaged.
		Bolt, fuel distributor to cylinder head cover	*BA07.52-P-1001-01J
43	Push terminal block at the left sidewall downwards into the original position	Engine 177 in model 205
44	Position fuel line (10) in the installation position on engine	Do not kink or bend fuel line (10). Otherwise, damage to the fuel line (10) will occur.
45	Attach ventilation (21) and tighten screw/bolts (22)	Bolt, vent line to cylinder head cover/turbocharger	*BA01.20-P-1001-01J
46	Unclip vacuum line (20) at ventilation (21)
47	Mount ground line at left cylinder head cover and tighten screw/bolt (19)	Bolt, engine wiring harness ground to cylinder head cover	*BA15.10-P-1003-05F
48	Unclip wiring harness (27) on left cylinder head cover and ventilation (21)
49	Plug in electrical connection (18) and lock into place
50	Insert electrical connectors (17) and lock
51	Clip in engine wiring harness (16) at left cylinder head cover
52	Mount fuel line (4) on left rail (15)		AR07.03-P-1010-02MNA
		Do not kink or bend fuel line (4). The fuel line (4) can be damaged otherwise.
		Bolt, fuel line clamp to engine/bracket	*BA07.03-P-1004-01H
		Bolt, fuel line service connection to left cylinder head cover	*BA07.03-P-1002-01H
		Union nut, fuel line to fuel distributor/fuel system high-pressure pump	*BA07.03-P-1001-01H
		Box wrench bit	Fig 4
53	Install insulation (14)
54	Break in fuel line (10) in fuel hose (13)	Do not kink or bend fuel line (10). Otherwise, damage to the fuel line (10) will occur.
55	Close mounting clamp (12) on fuel hose (13)	Replace mounting clamp (12) and fuel hose (13).
		Pliers for click clamps	Fig 3
56	Install filler neck (11)	Replace sealing ring.
		Bolt, filler neck to cylinder head cover	*BA01.20-P-1006-01J
57	Mount bracket of the fuel line (10) on left cylinder head cover	Bolt, fuel line clamp to engine/bracket	*BA07.03-P-1004-01H
58	Mount bracket of fuel lines (4, 10) at left cylinder head cover	Bolt, fuel line clamp to engine/bracket	*BA07.03-P-1004-01H
59	Mount fuel lines holder (4, 10) on left high- pressure pump		AR07.03-P-1010-02MNA
		Do not kink or bend the fuel lines (4, 10). The fuel lines (4, 10) may get damaged otherwise.
		Union nut, fuel line to fuel distributor/fuel system high-pressure pump	*BA07.03-P-1001-01H
		Box wrench bit	Fig 4
60	Install insulation (7)
61	Mount diagnostic socket (1) onto left cylinder head cover and tighten screw/bolts (26)	Bolt, fuel line service connection to left cylinder head cover	*BA07.03-P-1002-01H
62	Mount fuel feed (6) at diagnostic socket (1)	Union nut, fuel hose to diagnostic socket/fuel line	*BA07.03-P-1006-01H
63	Install ignition coil (5)	Engine 177 in model 205	AR15.12-P-2003MNA
64	Clip electrical line (3) into fuel line (4)
65	Screw dust cap onto diagnostic socket (1)	Dust protection cap to service connection	*BA07.03-P-1005-01H
66	Install side heat shield of left ATL	Engine 177 in model 205	AR09.40-P-6026MNA
67.1	Install left and right air filter housing	Engine 177 in model 205	AR09.10-P-1150MNA
67.2	Install left-hand air filter housing	Engine 176 in model 463 up to model year 2019	AR09.10-P-1150MNA
68	Mount ground line on battery	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205
		Engine 176 in model 463 (except 463.234) as of model year 2013 up to model year 2019	AR54.10-P-0003GW
		Engine 177 in model 205	AR54.10-P-0003LW
69	Read out fault memory using the diagnostic system and clear if necessary
		Engine 176 in model 463 up to model year 2019	AD00.00-P-2000-04A
		Engine 177 in model 205	AD00.00-P-2000-04B
70	Store injector quantity compensation (IMA) coding in ME-SFI [ME] control unit	When replacing fuel injectors (24).
		Engine 176 in model 463 up to model year 2019	AD00.00-P-2000-04A
		Engine 177 in model 205	AD00.00-P-2000-04B
	Check
71	Check fuel high-pressure circuit for leaktightness.		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
72	Carry out an engine test run, checking the engine for proper operation and leaktightness

Fig 2: Identifying Assembly Tool (272 589 00 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Pliers For Click Clamps (171 589 00 37 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Box Wrench Bit (000 589 80 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Puller (278 589 00 33 00)

Courtesy of MERCEDES-BENZ USA

Fig 6: Identifying Pressure Hose (119 589 04 63 00)

Courtesy of MERCEDES-BENZ USA

Fig 7: Identifying Drift (278 589 01 15 00)

Courtesy of MERCEDES-BENZ USA