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

Engine 176 in model 463

up to model year 2019

Engine 177 in model 205

Engine 178 in model 190

INJECTION NOZZLES, INJECTION VALVES, LINES

Number	Designation		Engine 176	Engine 177
BA07.03-P-1005-01H	Dust protection cap to service connection	Nm	1	1

INJECTION NOZZLES, INJECTION VALVES, LINES

Number	Designation		Engine 178
BA07.03-P-1005-01H	Dust protection cap to service connection	Nm	1

Fig 1: Identifying Pressure Hose (119 589 04 63 00)

Courtesy of MERCEDES-BENZ USA

Screw cap off diagnostic socket of the fuel distributor.
Insert end of the pressure hose (3) into the container (4).
Screw union nut (5) of the pressure hose (3) onto the diagnostic socket.
At this point, the diagnostic socket is opened and the fuel pressure in the fuel distributor is reduced. Fuel escapes from the end of the hose.
Unscrew union nut (5) of the pressure hose (3) from the diagnostic socket.
Screw cap onto the diagnostic socket of the fuel distributor and tighten .
Replace sealing ring of the cap.

Courtesy of MERCEDES-BENZ USA

Shown on engine 177 in model 205