Quote:
Originally Posted by Billybob
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The 124 chassis monovalve assembly is different from the 126 and 123 valves for which there is a replaceable plunger/diaphragm repair kit available separately. Before you open up your monovalve you might want to do some research if anyone has repaired a 124 monovalve using a replacement plunger/diaphragm, you might be able to successfully cannibalize another 124 valve for a good part, but I would be concerned that the 123/126 repair part may not be an exact replacement for the plunger/diaphragm original to the 124 monovalve, and if you've got things apart and it doesn't fit correctly you could be screwed if it doesn't go back together and seal up correctly.
FastLane only lists a complete monovalve assembly and the EPC does not show the plunger/diaphragm as a separate part either.
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I'm pretty sure that's what I have. I didn't get a repair kit, but rather got a cannibalized part from another forum member. I'm taking his word for it that it's the exact part.
Right now, heat is good. But as I have two virtually identical cars, I notice the smallest differences. The heat on the 92 is unbelievably strong....it had the complete monovalve assembly replaced last year when heat was noticeably anemic. On the 91, it definitely blows hot (as opposed to warm), but it's not as hot as the 92. So I'm suspecting a worn monovalve. But I'm sure I'll live with it until it gets more noticeable.
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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 160k miles
06 E320 CDI "Rutherford", Black on Tan, 180k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete
19 Honda CR-V EX 79k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife
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