Remove/install pressure control valve · ar0717p1060ff · Mercedes-Benz WIS

AR07.17-P-1060FF

Remove/install pressure control valve

23.04.2019

Engine

639.939 in model 454.0

P07.16-2678-08

1	High pressure pipe	4	Connector	6	Union nut
2	Connector	5	Cable duct	Y74	Pressure regulator valve
3	Connector

 	Remove/install
 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 contactwith 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
 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
1	Remove water collector		AR83.25-P-1402FF
2	Remove vacuum reservoir		AR07.09-P-0001FF
3	Detach plugs (2, 3, 4)
4	Remove high-pressure line (1)
	Notes about Common-Rail components		AH07.16-P-0002-01TX
		 Installation: Replace high-pressure line (1).
		 Bolt, pressure line bracket to cylinder head cover	*BA07.16-P-1001-01G
		 Nut, pressure line on high pressure pump	*BA07.16-P-1003-01G
		 Nut, pressure line to rail	*BA07.16-P-1004-01G
5	Remove screws of the cable duct (5)	 The cable duct (5) is fastened with three screws.
6	Remove union nut (6) of the pressure regulating valve (Y74) and remove pressure regulating valve (Y74) with sealing ring
	Notes about Common-Rail components		AH07.16-P-0002-01TX
		 Installation: Install new sealing ring of the pressure regulating valve (Y74).
		 Pressure regulator valve on rail	*BA07.16-P-1009-01G
7	Install in the reverse order
 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
8	Perform engine test run and check leak tightness of the fuel system in the area of the pressure regulating valve (Y74)
9	Read out fault memory	STAR DIAGNOSIS diagnosis system
			AD00.00-P-2000-04FF

 Common rail diesel injection (CDI)

Number	Designation		Engine 639.9
BA07.16-P-1001-01G	Bolt, pressure line bracket to cylinder head cover	Nm	12

 Common rail diesel injection (CDI)

Number	Designation		Engine 639.9
BA07.16-P-1003-01G	Nut, pressure line on high pressure pump	Nm	22

 Common rail diesel injection (CDI)

Number	Designation			Engine 639.9
BA07.16-P-1004-01G	Nut, pressure line to rail	Stage 1	Nm	20
		Stage 2	°	60

 Common rail diesel injection (CDI)

Number	Designation		Engine 639.9
BA07.16-P-1009-01G	Pressure regulator valve on rail	Nm	27

Referenced documents

ad0000p200004ff Connect STAR DIAGNOSIS, read out fault memory
ah0716p000201tx Notes about Common-Rail components
ar0709p0001ff Remove/install pressure reservoir
ar8325p1402ff Remove/install water collector
as0000z000501a 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.
as0716z000101a Risk of explosion caused by fuel igniting. Risk of injury to skin and eyes caused by fuel spraying out at high pressure
as4700z000101a 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 contactwith fuel.