Remove/install air shutoff valve - AR14.30-P-7200CMG

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ENGINE 156 in MODEL 204, 212

Fig 1: Air Shutoff Valve Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
1	Switch off ignition
2	Remove front engine cover	Do not tilt front engine cover, but lift upwards vertically otherwise the retaining lugs can break off.
	Remove right air shutoff valve (1)
3	Detach pneumatic line (2) and air hose (3) from air shutoff valve (1)	Do not use pointed or sharp-edged tools to remove pneumatic line (2) and air hose (3), otherwise these will be damaged. Check pneumatic line (2) and air hose (3) for damage, replace if required.
4	Remove expansion reservoir of power steering and place to one side with connected lines		AR46.25-P-1000CMG
5	Unscrew bolt (4) and remove air line (5) from air shutoff valve (1)		*BA14.30-P-1002-03B
6	Unscrew bolts (6) and remove air shutoff valve (1)		*BA14.30-P-1001-03B
		Install new gasket
	Remove left air shutoff valve (11)
7	Detach pneumatic line (10) and air hose (3) from air shutoff valve (11)	Do not use pointed or sharp-edged tools to remove pneumatic line (10) and air hose (3), otherwise these will be damaged. Check pneumatic line (10) and air hose (3) for damage, replace if required.
8	Remove air pump switchover valve (Y32)		AR14.30-P-7255CMG
9	Unscrew bolts (8) and place vacuum unit (9) for intake manifold to one side
10	Unscrew bolt (12) and remove air line (13) from air shutoff valve (11)		*BA14.30-P-1002-03B
11	Unscrew bolts (14) and remove air shutoff valve (11)		*BA14.30-P-1001-03B
		Install new gasket
12	Install in the reverse order
	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
13	Carry out engine test run

COMBINATION VALVE

Number	Designation			Engine 156, 159
BA14.30-P-1001-03B	Bolt, combination valve to cylinder head	M6	Nm	8.5
BA14.30-P-1002-03B	Bolt, air line to combination valve	M8	Nm	20