Fuel Pressure Relief Valve: Service and Repair

AR07.03-P-1460-01VA Reduce Fuel Pressure Through Service Valve











119 589 04 63 00
Pressure hose





Shown on engine 272 in model 171 without fuel tank with exterior filter, code 917

1 Unscrew protective cap (1) of the service valve (2) of the fuel distributor.
2 Insert end of the pressure hose (01) into the container (3).
3 Screw on union nut of the angled piece (01a) to the service valve (2).
At this point, the service valve (2) is opened and the fuel pressure in the fuel distributor is reduced. Fuel escapes from the end of the hose.
4 Unscrew the union nut of the angled piece (01a) from the service valve (2).
5 Screw protective cap (1) onto the service valve (2) of the fuel distributor
For vehicles with fuel tank with exterior filter, code 917 the protective cap (1) must be tighten with torque.
Ensure that the sealing ring of the protective cap (1) is replaced. replaced.