Remove/install electric vacuum pump - AR43.05-P-0001NKE

MODEL 242 with ENGINE 780 

Fig 1: Identifying Electric Vacuum Pump Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Switch off ignition and keep transmitter key at a location beyond transmitter range (at least 2 m)
2	Push down brake pedal several times	In order to reduce any vacuum in the BAS brake booster.
3	Remove fan unit (1)		AR20.40-P-5050NKE
4	Cut cable tie (2)	The cable tie (2) must be replaced.
5	Disconnect electrical connector (3)
6	Release vacuum line (4)
7	Unclip coolant hose (5) (arrows) and push away in downward direction
8	Unscrew nuts (6)	Screw/bolt, vacuum pump to front cover	*BA43.05-P-1001-01F
9	Remove vacuum pump (M56) upwards
10	Install in the reverse order
	Initial startup
11	Connect diagnostic system and read out fault memory	Only after replacement of the vacuum pump (M56).
			AD00.00-P-2000-04A
12	Reset parameter data of vacuum pump (M56) in powertrain control unit (N127)	Only after replacement of the vacuum pump (M56).
13	Perform teach-in process of vacuum pump (M56) in powertrain control unit (N127)	Only after replacement of the vacuum pump (M56).

ELECTRIC VACUUM PUMP OF BRAKE BOOSTER

Number	Designation		Model 242 with engine 780
BA43.05-P-1001-01F	Screw/bolt, vacuum pump to front cover	Nm	12