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Home >> Mercedes Benz >> 2006 >> S430 Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control -- Testing & Repair -- 215 & 220 Chassis >> Testing & Repair >> Removing and installing front duovalve/coolant circulation pump compact unit - AR83.25-P-1160M

Removing and installing front duovalve/coolant circulation pump compact unit - AR83.25-P-1160M

MODEL 215, 220 

Fig 1: Identifying Front Duovalve/Coolant Circulation Pump Compact Unit Remove/Install Components
G04851466Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Removal, installation     
DANGER Danger  of severe burns to skin and eyes from hot coolant spewing out. Coolant is toxic  when swallowed Open cooling system only when coolant temperature is below 90 °C. Open cover slowly and release pressure. Do not fill beverage containers with coolant. Wear protective gloves, protective clothing and protective goggles. AS20.00-Z-0001-01A
1 Release pressure in cooling system IMPORTANT For this purpose, turn radiator cap to catch "1" and close again  
2 Remove wiper system   AR82.30-P-6400M
3 Disconnect connector (5) from duovalve    
4 Disconnect connector (M13x1) from coolant circulation pump    
5 Slide rubber mount (1) out of retaining plate (2)    
6 Attach clamps to coolant hoses (3) SPECIAL TOOL Fig 2
7 Release hose clamps (4), pull off coolant hoses    
8 Remove heater supply unit (A31)    
9 Install in opposite order IMPORTANTInstallation: 
After completing work correct coolant level and check for leakage
 
Fig 2: Identifying Clamp (000 589 40 37 00)
G04851467Courtesy of MERCEDES-BENZ USA