Removing and installing diaphragm pressure regulator - AR07.17-P-1450D

ENGINE 104.94 /99, 111.920 /921 /94 /96 /970 /973 /974 /975 (except 104.990) 

Shown on engine 104 

Fig 1: Identifying Diaphragm Pressure Regulator, O-Ring, Circlip And Vacuum Hose

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Shown on engine 111.975 

Fig 2: Identifying Service Valve, Fuel Rail O-Ring, Circlip And Vacuum Hose

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing, installing
	Risk of explosion  as a result of ignition.	No fire, naked flame or smoking.	AS47.00-Z-0001-01A
	Risk of poisoning  as a result of inhaling and swallowing fuel	Pour fuels only into suitable and appropriately marked vessels
	Risk of injury  to skin and eyes as a result of contact with fuel	Wear protective clothing when handling fuel
1.1	Release fuel pressure through service valve (1/1)	See DM Engine, Volume 2 Index 1 and 4, or Volume 4 Index 9
			Figure
			Figure
1.2	Remove cover of diaphragm pressure regulator (40)	Engine 111.945 in model 208
2	Detach vacuum hose (40/11)
3	Remove circlip (40/10)	Installing:  inspect for re-use
4	Take out diaphragm pressure regulator (40) at fuel rail (17)
5	Install in the reverse order	Installing:  replace O-rings (40/8) and (40/9), oil to facilitate installation

Fig 3: Identifying Tester (103 589 00 21 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 4: Identifying Pressure Hose (119 589 04 63 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.