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Home >> Mercedes Benz >> 2019 >> S450 Base >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Mixture Formation - 222 Chassis (2 Of 3) >> Testing & Repair >> Remove/Install Fuel Rail With Fuel Injectors >> Remove/Install Right Fuel Rail With Fuel Injectors - AR07.03-P-1051MNL

Remove/Install Right Fuel Rail With Fuel Injectors - AR07.03-P-1051MNL

Engine 176 in model 217, 222 

G15366115Courtesy of MERCEDES-BENZ USA
G15366116Courtesy of MERCEDES-BENZ USA

Shown on model 222.983 

G15366117Courtesy of MERCEDES-BENZ USA
DANGER Risk of explosion  caused by fuel igniting. Risk of injury  to skin and eyes caused by fuel spraying out at high pressure Keep all ignition sources out of hazard area. Do not carry out any work on system when it is pressurized. AS07.16-Z-0001-01A
DANGER 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
WARNING 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
CAUTION 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
CAUTION 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
Topical note  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
REMOVING Remove     
1 Remove right high-pressure line   AR07.03-P-1002MNL 
2 Remove cover (1)    
3 Detach electrical wiring harness (2) with guide and place to one side    
4 Remove vacuum line (3) from vacuum pump and place to one side    
5 Remove soundproofing (4) at rail (6)    
6 Remove bleed line (5) from cylinder head cover    
7 Remove clamps, remove low-pressure line from fuel high-pressure pump and place low-pressure line to one side   AR07.03-P-1121MNL 
8 Release and disconnect electrical connector o cylinder 2 intake CAMTRONIC actuator (Y49/11) and cylinder 3 intake CAMTRONIC actuator (Y49/13)    
9 Release and disconnect electrical connector o right fuel pressure and temperature sensor (B42/1)    
10 Release and disconnect electrical connectors (9) of fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4)    
11 Mark fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) in relation to respective cylinder When reusing fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4).  
12 Remove screw/bolts (10) NOTES
Remove screw/bolts (10) alternately each by half a revolution. Start in center of rail (6) and work outwards.
Rail (6) will otherwise be damaged.
 
13 Remove rail (6) from fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) and seal openings with suitable stop plugs SPECIAL TOOL Record plug Fig 2
14 Remove fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) from cylinder head and seal injector well bores with suitable stop plugs   AR07.03-P-0004-03MM 
    SPECIAL TOOL Puller Fig 4
    SPECIAL TOOL Plug Fig 1
15 Check fuel injectors for cylinders 1 to 4 (Y76/1 Y76/2, Y76/3, Y76/4) for external damage and replace if necessary When reusing fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4).  
INSTALLING Install     
16 Clean fuel connections at fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) NOTES
For cleaning the fuel connections, hold downwards.
Otherwise, the fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) will fail.
 
    NOTES If fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) are replaced, install them immediately after the transport protective cap is removed.
Leaks can occur otherwise.
 
    Assembly cleaner *BR00.45-Z-1028-04A 
17 Replace sealing packages of fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) on rail (6)   AR07.03-P-0004-02MM 
    Assembly cleaner *BR00.45-Z-1028-04A 
    SPECIAL TOOL Drift Fig 5
18 Install new sealing rings at fuel injectors for cylinders 1 to 4 (Y76/1 Y76/2 Y76/3 Y76/4)   AR07.03-P-0004-01MM 
    Assembly cleaner *BR00.45-Z-1028-04A 
    SPECIAL TOOL Assembly tool Fig 3
19 Assign fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) to corresponding cylinders and clean injector well bores When reusing fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4).  
    NOTES When reusing fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4), insert them in the cylinder in which they were installed before.
Engine damage can occur otherwise.
 
20 Install fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) on rail (6) and secure with new clips    
21 Read off and note down injector injection quantity adjustment coding at fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) When replacing fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4).  
22 Insert rail (6) with fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) in right cylinder head    
23 Tighten screw/bolts (10) NOTES
Screw in screw/bolts (10) alternately each by half a revolution. Start in center of rail (6) and work outwards.
Rail (6) will otherwise be damaged.
 
    TORQUE SPECIFICATION Bolt, fuel distributor to cylinder head cover *BA07.52-P-1001-01J 
24.1 Connect electrical connector at right fuel pressure and temperature sensor (B42/1) until it locks Where rail (6) is reused.  
24.2 Install new right fuel pressure and temperature sensor (B42/1) When installing a new rail (6).  
      AR07.04-P-0201MNL 
25 Connect electrical connector (9) of fuel injectors for cylinders 1 to 4 (Y76/1, Y76/2, Y76/3, Y76/4) until they lock    
26 Connect electrical connectors of cylinder 2 intake CAMTRONIC actuator (Y94/11) and cylinder 3 intake CAMTRONIC actuator (Y94/13) until they lock    
27 Attach low-pressure line at fuel pump AR07.03-P-1121MNL 
28 Mount bleed line (5) at cylinder head cover TORQUE SPECIFICATION Bolt, vent line to cylinder head cover/turbocharger *BA01.20-P-1001-01J 
29 Install soundproofing (4) at rail (6)    
30 Attach vacuum line (3) at vacuum pump    
31 Position electrical wiring harness (2) with guide and fix in place    
32 Install cover (1) TORQUE SPECIFICATION M6 *BA00.10-P-1002-01A 
33 Check connection of fuel line at rail (10) for damage If sealing cone is damaged
↓
Replace fuel line.
 
      AR07.03-P-1002MNL 
34 Install right high-pressure line   AR07.03-P-1002MNL 
35 Read out and erase fault memory    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
36 Store injector injection quantity adjustment coding in ME-SFI [ME] control unit (N3/10)    
      AD00.00-P-2000-04B
37 Check fuel high-pressure circuit for leaktightness.   AR07.03-P-1010-04MM 
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
WARNING 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
38 Perform an engine test run and check engine for proper operation and leak tightness    
HEADLESS SCREWS: BOLTS AND NUTS, COARSE-PITCH THREAD

Number Designation Model all (4xWD, CAR, smart)
BA00.10-P-1002-01A M6 8.8 Galvanized Nm 9
Phosphated Nm 9
10.9 Galvanized Nm 13
Phosphated Nm 12
12.9 Galvanized Nm 16
Phosphated Nm 14
CRANKCASE VENTILATION SYSTEM, CYLINDER HEAD COVER

Number Designation Engine 176
BA01.20-P-1001-01J Bolt, vent line to cylinder head cover/turbocharger Nm 9
FUEL DISTRIBUTOR

Number Designation Engine 176
BA07.52-P-1001-01J Bolt, fuel distributor to cylinder head cover Nm 9
Fig 1: Identifying Plug (270 589 03 91 00)
G11974108Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Record Plug (129 589 00 91 00)
G12078802Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Assembly Tool (272 589 00 43 00)
G13655962Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Puller (278 589 00 33 00)
G11128361Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Drift (278 589 01 15 00)
G13656001Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1028-04A Assembly cleaner A 000 986 56 01