Mono Valve
07-18-2003, 02:12 AM
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Mono Valve
I have and 1981 380sl, and I have been looking all over for the location of the mono valve, and I cant find it anywhere. Can some please explain to me where it is at, and how i would get to it.
Thanks.
Thanks.
07-18-2003, 07:13 AM
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02 W163, 84 W123, 03 E39, 98 E39
MonoValve
I do not specificaly know your vehicle, but from other models have owned, I would suggest loking on the firewall. On all my MBs there has been a black rubber tube comming off the radiator/engine on the front of the engine compartment on the passenger side, that has an in-line electric pump. Follow the black rubber heating tube back towards the back of the engine and to the firewall and I believe you will find your monovalve mounted there connected to the heater tube.
On all the older monovalves there is a silicone diaphram that tears and goes bad. In the 80's I use to be able to obtain this diaphram for a couple of dollars to replace them. Then MB decided that we needed to preplace the whole actuator/diaphram for like $35. Purchasing the complete monovalve with the outside housing is now in the range of $140 or so if the magnet that surrounds the actuator is bad also.
Let us know if/where you find it. Good luck.
On all the older monovalves there is a silicone diaphram that tears and goes bad. In the 80's I use to be able to obtain this diaphram for a couple of dollars to replace them. Then MB decided that we needed to preplace the whole actuator/diaphram for like $35. Purchasing the complete monovalve with the outside housing is now in the range of $140 or so if the magnet that surrounds the actuator is bad also.
Let us know if/where you find it. Good luck.
