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Remove/Install Fuel Pressure And Temperature Sensor - AR07.04-P-0050MRA

Engine 274.9 in model 205 

Engine 274.9 in model 253 

Shown on engine 274.920 in model 205.042 

Fig 1: Fuel Pressure And Temperature Sensor Components Location - Engine 274.9 In Model 253 (Shown On Engine 274.920 In Model 205.042)
G14546701Courtesy of MERCEDES-BENZ USA
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
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
REMOVINGINSTALLING Remove/install     
1 Remove upper engine cover INSTALLATION IMPORTANT : Only install upper engine cover after the leak test.  
2 Remove cable duct (4) and lift TORQUE SPECIFICATION M6 X 1 *BA00.10-P-1002-04A 
3 Release and disconnect electrical connector (2)    
4 Clean rail (3) in the area of the fuel pressure and temperature sensor (B4/25) Assembly cleaner *BR00.45-Z-1028-04A 
5 Relieve fuel pressure in fuel system high-pressure circuit    
      AR07.03-P-1460-02MM 
6 Remove fuel pressure and temperature sensor (B4/25) INSTALLATION NOTES : The fuel pressure and temperature sensor (B4/25) must be replaced after every disassembly.
Leaks can occur otherwise.
TORQUE SPECIFICATION Pressure and temperature sensor to fuel distributor
 
      *BA07.04-P-1001-01N 
7 Install in the reverse order    
8 Read out and erase fault memory    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04B
INSPECT Check     
9 Check fuel high-pressure circuit for leaktightness   AR07.03-P-1010-04MM 
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
10 Perform an engine test run and check engine for proper operation and leak tightness    
11 Install upper engine cover    
METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143

Number Designation 8.8 10.9
BA00.10-P-1002-04A M6 X 1 Nm 9 13
SENSORS, TRANSMITTERS

Number Designation Engine 274
BA07.04-P-1001-01N Pressure and temperature sensor to fuel distributor Nm 8
REPAIR MATERIALS

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