Remove/install pipework for secondary air system - AR14.30-P-7150EVO

ENGINE 271.8 in MODEL 172, 204, 207, 212 

Fig 1: Identifying Secondary Air System Pipework Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Removes bolts (4) from pipework (1)	Bolt, air line to crankcase/holder oil dipstick guide tube/bracket heater feed bridge	BA14.30-P-1010-02A
2	Remove bolts (5) from cylinder crankcase	Bolt, air line to crankcase/holder oil dipstick guide tube/bracket heater feed bridge	BA14.30-P-1010-02A
3	Remove bolts (6) from combination valve (2)	Bolt, air line to exhaust combination valve	BA14.30-P-1008-02A
4	Remove pipework (1) upwards	Replace gaskets.
5	Remove bolts (7) from cylinder head and remove bracket (3)	If necessary
		Bolt, air line to crankcase/holder oil dipstick guide tube/bracket heater feed bridge	BA14.30-P-1010-02A
6	Install in the reverse order

AIR SHUTOFF VALVE

Number	Designation		ENGINE 271.8
BA14.30-P-1010-02A	Bolt, air line to crankcase/holder oil dipstick guide tube/bracket heater feed bridge	Nm	9

AIR SHUTOFF VALVE

Number	Designation		ENGINE 271.8
BA14.30-P-1008-02A	Bolt, air line to exhaust combination valve	Nm	9