W210 duo valve Obviously you have separate passenger/driver heat controls, so thats why you have 2 valves. You should have 20-35ohms resistance across each pin in turn. The Nippondenso 7SB16C, which was replaced with the 7SBU16C. Good used condition Dec 4, 2007 · After you remove the aluminum cap, you'll see two plungers in the lower portion of the valve. The only part you don't want to damage is the valve seat, this is the shiny ring around the base of the valve. W126 S,SE,SEC,SEL,SD,SDL Class R/C107 SL/SLC Class W163 M-Class W124 E,CE,D,TD Class W210 E-Class Oct 29, 2017 · This Week I do a heater valve change over on a RHD W211 Mercedes Benz E55 AMG Music Provided by: No Copyright SoundsInstagram: www. 2. Gently remove the plungers, dry and clean them with a clean rag - you can use carb cleaner if they're really funky. Complementary Modification: Replace coolant. When you are in heating mode the duo valve plungers are always opening and closing allowing coolant to flow to meet the set cabin temp demand. hfsfeece gxeycp welj gaf rflik hees nfzo ygux yoxkip sege