Remove/install the tumble flap and resonance flap switchover valve at the intake manifold - AR09.20-P-1990GZD

ENGINE 272, 273 in MODEL 164, 251

Fig 1: Identifying Tumble Flap And Resonance Flap Switchover Valve Remove/Install Components

G10115301

Courtesy of MERCEDES-BENZ USA

MODIFICATION NOTES

21.8.09

Remove power electronics with power distributor

Step 1.2

AR08.10-P-0011GZH

	Remove/install
	Risk of death caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer.	AS00.00-Z-0010-01A
1.1	Remove air filter housing	Except engine 272.973 in model 164.195	AR09.10-P-1150GZA
1.2	Remove power electronics with power distributor	Engine 272.973 in model 164.195	AR08.10-P-0011GZH
2	Remove resonance intake manifold (7)		AR09.20-P-1961GZA
3	Pull pneumatic line (1 or 2) out of switchover valve (Y22/6 or Y22/9)	Never use pointed or sharp tools to remove the pneumatic line (1 or 2), otherwise these may be damaged. Installation: Check pneumatic line (1 or 2) for damage and replace if necessary.
4	Remove lock washer (3 or 4)	Replace lock washer (3 or 4).
5	Disconnect electrical connector (X205) at switchover valve (Y22/6 or Y22/9)
6	Remove switchover valve (Y22/6 or Y22/9) from resonance intake manifold (7)
7	Install in the reverse order
	Checking
	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
8	Carry out an engine test run and check intake tract and fuel system for leaks		AS00.00-Z-0005-01A