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Home >> Mercedes Benz >> 2008 >> GL450 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Cooling System - 164 Chassis -- Diesel) >> Testing & Repair >> Remove/install coolant pump switchover valve - AR20.10-P-3000SXI

Remove/install coolant pump switchover valve - AR20.10-P-3000SXI

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ENGINES 642 in MODEL 164 

with switchable coolant pump 

Shown on engine 642.852 

Fig 1: Identifying Coolant Pump Switchover Valve Components
G06878174Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/install     
1 Remove engine trim panel IMPORTANTInstallation:  Ensure correct seating of the engine cover. AR01.10-P-2405GZB
2 Remove mixing chamber   AR09.20-P-1320GZB
3 Disconnect electrical connector (5) on the coolant pump switchover valve (Y133)    
4 Detach vacuum hoses (4)    
5 Unclip coolant pump switchover valve (Y133) on mounting frame bow (3)    
6 Remove coolant pump switchover valve (Y133) upwards    
7 Install in the reverse order