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

ENGINE 156 in MODEL 216, 221 

Fig 1: Identifying 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, tailgates or sliding roof.	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
1	Switch ignition off, remove ignition key (transmitter key).	On vehicles with Keyless Go, code 889: Press keyless go start/stop button repeatedly until ignition is switched off Remove keyless go transmitter card or transmitter key from vehicle and store outside of transmission range (min. 2 m)
2	Open engine hood
3	Remove front engine cover	Do not tilt front engine cover, but lift upwards vertically otherwise the retaining lugs can break off.
	Right aspirator shutoff valve
4	Detach pneumatic line (2) and air hose (3) from right 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. Installation:  Check pneumatic line (2) and air hose (3) for damage, replace if required.
5	Loosen expansion reservoir for steering and place to one side		AR46.25-P-1000SY
6	Unscrew bolt (4)		*BA14.30-P-1002-03B
7	Remove air line (5) from right air shutoff valve (1)
8	Remove screws (6)		*BA14.30-P-1001-03B
9	Remove right air shutoff valve (1)	Replace seal.
	Left air shutoff valve
10	Detach pneumatic line (10) and air hose (3) from left 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.
11	Remove air pump switchover valve (7)		AR14.30-P-7255SMG
12	Remove bolts (8) and lay vacuum unit (9) for variable intake manifold to one side
13	Remove screw (12)		*BA14.30-P-1002-03B
14	Remove air line (13) from left air shutoff valve (11)
15	Remove screws (14)		*BA14.30-P-1001-03B
16	Remove left air shutoff valve (11)	Replace seal.
17	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
18	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