Remove/Install A Pressure 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 205 (Shown On Engine 274.920 In Model 205.042)

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 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
	Remove/install
1	Remove upper engine cover	Only install upper engine cover after the leak test.
2	Remove cable duct (4) and raise (2)	M6X1	*BA00.10-P-1002-04A
3	Release and disconnect electrical connection (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)	The fuel pressure and temperature sensor (B4/25) must be replaced after every disassembly. Leaks can occur otherwise. 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		AD00.00-P-2000-04B
	Check
9	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 buttoned-up 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 leaktightness
11	Install upper engine cover