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Home >> Mercedes Benz >> 1999 >> S500 >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Mixture Formation - 140 Chassis >> Testing & Repair >> Removing and installing fuel rail with injection valves (LH-SFI) - AR07.03-P-1452 >> Removing and installing fuel rail with injection valves (LH-SFI) - AR07.03-P-1452E

Removing and installing fuel rail with injection valves (LH-SFI) - AR07.03-P-1452E

ENGINE 119.97 

Fig 1: Identifying Fuel Rail With Injection Valves Components - Engine 119.97
G04677809Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Removal, installation     
STOP Risk of explosion Pay attention to accident prevention regulations!  
1 Release fuel pressure through service valve at fuel rail see Diagnosis Manual Engine, Volume 2, Index 3.1
SPECIAL TOOL
Figure
    SPECIAL TOOL Figure
2 Disconnect all the electrical connectors of the cables which run via the fuel rail to the intake manifold    
3 Disconnect vacuum pipe for brake servo unit    
4 Detach hoses for crankcase ventilation    
5 Detach vacuum hose of diaphragm pressure regulator    
6 Disconnect fuel feed pipe (17/3) and return pipe (17/2) IMPORTANT Connect fuel. Do not  disconnect fuel feed and return pipes for testing the injection valves  
7 Unplug couplings (arrow)    
8 Remove screws (16)    
9 Pull fuel rail (17) together with injection valves out of intake manifold Cover over holes for injection valves  
10 Replace O-rings (16/8) IMPORTANT Oil for installing  
11 Examine insulating sleeves If necessary, after examining: ↓  
    Remove insulating sleeves or rubber rings (for injection valves), install AR07.03-P-6570E 
INSPECT Testing     
12 Test fuel injection valves (Y62) see Diagnosis Manual Engine, Volume 2, Index 3.1
If necessary, after testing: ↓
 
    Remove injection valves, replace, install AR07.03-P-6521E 
13 Install in the reverse order    
Fig 2: Identifying Tester (103 589 00 21 00)
G04677810Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Identifying Pressure Hose (119 589 04 63 00)
G04677811Courtesy of MERCEDES-BENZ OF NORTH AMERICA.