Remove/install secondary air injection pump switchover valve - AR14.30-P-8100MCU

ENGINE 132.910 in MODEL 451.3/4 

Fig 1: Identifying Secondary Air Injection Pump Switchover Valve Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove interior flap above engine		AR88.40-P-1100-03MCC
2	Unlock (arrow) and remove secondary air injection pump switchover valve (Y32) on holder (1)
3	Disconnect electrical connector (3) at secondary air injection pump switchover valve (Y32)
4	Detach vacuum hoses (3) on secondary air injection pump switchover valve (Y32) and remove secondary air injection pump switchover valve (Y32)
5	Install in the reverse order