Remove/install high-pressure pump's fuel temperature sensor - AR07.04-P-0008CD

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MODEL 166, 172, 204, 207, 212, 218, 221 with ENGINE 651

Fig 1: High-Pressure Pump Fuel Temperature Sensor Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	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
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Notes about Common-Rail components		AH07.16-P-0002-01TX
1	Secure vehicle on vehicle lift	MODEL 221.0/1 with ENGINE 651	AR00.60-P-0100SX
		MODEL 172 with ENGINE 651	AR00.60-P-0100T
		MODEL 166 with ENGINE 651	AR00.60-P-0100GZ
		MODEL 204, 207 with ENGINE 651	AR00.60-P-0100CW
		MODEL 212, 218 with ENGINE 651	AR00.60-P-0100EWS
2.1	Remove center and rear underfloor paneling	MODEL 166 with ENGINE 651
			AR61.30-P-1001GQ
2.2	Remove bottom section of soundproofing at front and in the middle	MODEL 172.4 with ENGINE 651
			AR94.30-P-5300W
2.3	Remove bottom section of soundproofing	MODEL 204.0/2/3, 207, 212, 218 with ENGINE 651
			AR94.30-P-5300EW
2.4	Remove lower engine compartment paneling	MODEL 204.9 with ENGINE 651
			AR61.20-P-1105CY
2.5	Remove lower engine compartment paneling	MODEL 221 with ENGINE 651 without CODE Z07 (Top protection)
			AR61.20-P-1105SX
3	Disconnect electrical connector (1)
4	Clean high pressure pump in the area of fuel temperature sensor (B50) with cold cleaning solvent and dry with compressed air	Catch escaping fuel with lint-free rags.
		Cold degreasing agent/cold cleaning solvent HAKU 1025-920	*BR00.45-Z-1051-04A
5	Remove fuel temperature sensor (B50)	Suction off any paint and dirt particles.
		Fuel temperature sensor to high-pressure pump	*BA07.04-P-1001-01L
6	Replace sealing rings (2)	Suction off possible paint and dirt particles, particularly out of the hole.
7	Install in the reverse order
	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
8	Check fuel system for leaks with engine running	Carry out visual inspection.

SENSORS, TRANSMITTERS

Number	Designation		ENGINE 651
BA07.04-P-1001-01L	Fuel temperature sensor to high-pressure pump	Nm	15

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1051-04A	Cold degreasing agent/cold cleaning solvent HAKU 1025-920	Chemische Werke Kluthe GmbH