Remove/Install Right High-Pressure Fuel Pump - AR07.02-P-1024MNA

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: Right High-Pressure Fuel Pump Components Location - Engine 176 In Model 463 Up To Model Year 2019; Shown On Engine 177

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 injur  y 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
1	Set DIRECT SELECT gear selector switch to position "N" and release parking brake
2	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
3	Remove left and right air filter housing		AR09.10-P-1150MNA
4	Remove side heat shield of left ATL	Engine 177 in model 205	AR09.40-P-6026MNA
5	Relieve fuel pressure over diagnostic socket		AR07.03-P-1460-01MNA
		Dust protection cap to service connection	*BA07.03-P-1005-01H
		Pressure hose	Fig 4
6.1	Unclip electrical plug connection (1) on crash plate (2)	Engine 177 in model 205
6.2	Unclip electrical lines from crash plate (2)	Engine 176 in model 463 up to model year 2019
7	Disconnect electrical connection (4)
8	Remove insulation (5)
9	Remove bolts (6)
10	Detach vacuum line (7) from vacuum pump and place to one side
11	Remove screws/bolts (8) and place crash plate (2) to one side	Bolt, shield to cylinder head/cylinder head cover	*BA07.02-P-1002-01E
12	Remove position sensor of camshafts	Engine 176 in model 463 up to model year 2019	AR15.12-P-2144MNF
		Engine 177 in model 205	AR15.12-P-2144MNA
13	Remove lower engine compartment paneling	Engine 176 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 )	AR61.20-P-1105GW
		Engine 177 in model 205	AR61.20-P-1105LW
14	Detach front circulation pump for low- temperature water circuit and place with attached lines and hoses to one side	Engine 176 in model 463 up to model year 2019	AR09.41-P-6925MNF
15	Rotate engine at crankshaft center bolt in direction of engine rotation to a 40°crank angle (CA) after top dead center (TDC) on cylinder 1 (ignition TDC)		AR05.10-P-7620-04MNA
		Drift	Fig 2
16	Detach bracket of fuel lines (9, 10) at right cylinder head cover
17	Detach fuel line (10) at rail (11)	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 line (10). Otherwise leaks and damage may occur.
		Assembly cleaner	*BR00.45-Z-1028-04A
		Box wrench bit	Fig 3
18	Detach fuel lines (9, 10) on right fuel system high pressure pump (3) and place to one side	Thoroughly clean area around fuel lines (9, 10) at locations to be separated. Failure can occur otherwise to the fuel system. Do not kink or bend the fuel lines (9, 10). Otherwise leaks and damage may occur. For pulling out of fuel lines (9, 10) from the right fuel system high pressure pump (3) ensure that the position sensor of the right intake camshaft is not damaged.
		Assembly cleaner	*BR00.45-Z-1028-04A
		Box wrench bit	Fig 3
19	Remove screws (14) and remove right fuel system high pressure pump (3) upward	Screw/bolts (14) must be removed alternately each by half a revolution each time when removing the right fuel system high pressure pump (3). Damage could occur otherwise to the right fuel system high pressure pump (3). Thoroughly clean area around the fuel high- pressure circuit. Failure can occur otherwise to the fuel system.
		Assembly cleaner	*BR00.45-Z-1028-04A
	Install
20	Replace sealing ring of the right fuel system high pressure pump (3)
21	Attach right fuel system high pressure pump (3) with screw/bolt (14) on right cylinder head cover	Screw/bolts (14) must be screwed in alternately each by half a revolution each time when installing the right fuel system high pressure pump (3). Damage could occur otherwise to the right fuel system high pressure pump (3). The right fuel system high pressure pump (3) must lie flat on the right cylinder head cover after tightening the screws (14). Replace screws (14).
		Bolt, fuel system high pressure pump to cylinder head	*BA07.02-P-1001-01E
	Check
22	Check fuel lines (9, 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 (9, 10) must be checked before assembly. This prevents leaks and damage.
23	Attach fuel lines (9, 10) to right fuel system high pressure pump (3)		AR07.03-P-1010-02MNA
		Do not kink or bend the fuel lines (9, 10). Otherwise leaks and damage may occur.
		Union nut, fuel line to fuel distributor/fuel system high-pressure pump	*BA07.03-P-1001-01H
		Box wrench bit	Fig 3
24	Attach fuel line (10) to the rail (11)		AR07.03-P-1010-02MNA
		Do not kink or bend fuel line (10). Otherwise leaks and damage may occur.
		Union nut, fuel line to fuel distributor/fuel system high-pressure pump	*BA07.03-P-1001-01H
		Box wrench bit	Fig 3
25	Attach bracket of fuel lines (9, 10) to right cylinder head cover
26	Mount front circulation pump for low- temperature water circuit	Engine 176 in model 463 up to model year 2019	AR09.41-P-6925MNF
27	Install lower engine compartment paneling	Engine 176 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 )	AR61.20-P-1105GW
		Engine 177 in model 205	AR61.20-P-1105LW
28	Install position sensors of camshafts	Engine 176 in model 463 up to model year 2019	AR15.12-P-2144MNF
		Engine 177 in model 205	AR15.12-P-2144MNA
29	Put on crash plate (2) and tighten down screw/bolts (8)	Bolt, shield to cylinder head/cylinder head cover	*BA07.02-P-1002-01E
30	Attach vacuum line (7) to vacuum pump
31	Screw in screws (6)	Engine 176 in model 463 up to model year 2019 Bolt, vacuum pump to cylinder head	*BA43.05-P-1002-01B
		Engine 177 in model 205 Screw/bolt, bracket of vacuum line to shield plate of high- pressure pump	BA43.05-P-1002-01O
32	Install insulation (5)
33	Mount electrical connection (4)
34.1	Unclip electrical plug connection (1) on crash plate (2)	Engine 177 in model 205
34.2	Clip in electrical lines of crash plate (2)	Engine 176 in model 463 up to model year 2019
35	Install side heat shield of left ATL	Engine 177 in model 205	AR09.40-P-6026MNA
36	Install left and right air filter housing		AR09.10-P-1150MNA
37	Attach ground line to 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
38	Switch on ignition	The ignition must be switched on for 5 s before the engine start in order to fill the left fuel system high pressure pump with fuel. Damage could occur to the left fuel system high pressure pump otherwise.
	Check
39	Check fuel high-pressure circuit		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
40	Perform an engine test run and check fuel system for proper operation and leaktightness

Fig 2: Identifying Drift (177 589 00 15 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Box Wrench Bit (000 589 80 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Pressure Hose (119 589 04 63 00)

Courtesy of MERCEDES-BENZ USA