Where is the vacuum element for the center dash vents in the 124? Under dash? Is the ac vaccume diagram for the 123 the same for the 124?

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1990 300d 2.5 new to me.

The center vent vacuum element is INSIDE of the evaporator housing.

Complete disassembly required to replace.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Oh what joy.

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1990 300d 2.5 new to me.

I have it said that it is possible to reach down in the front of the box and swap that pod. But I don't see how.

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2012 E350
2006 Callaway SC560