Tuesday, February 28, 2023

Mono Valve (Heater valve) location / replacement on R129 SL600

Noticed there was no heat in the cabin, cold ambient air only, even on max heat setting. Reading around that the mono valve is usually to blame, benz part number 1147412049 and 0018300684. Does anyone know off hand where this is located on the M120 R129's? Ordered the pump and will upload some pics of the job forthcoming.
Noticed there was no heat in the cabin, cold ambient air only, even on max heat setting. Reading around that the mono valve is usually to blame, benz part number 1147412049 and 0018300684. Does anyone know off hand where this is located on the M120 R129's? Ordered the pump and will upload some pics of the job forthcoming.

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