Heater scuttle valve

[Jagbhoy]

Hi folks I’m wondering if anyone has had to replace the scuttle vacuum valve to open the fresh air flap. I have a very good vacuum supply to it and using a vacuum pump directly to the valve it won’t open. The diaphragm must be ruptured. Anybody had success repairing it or is there a suitable replacement. The part is obsolete. I’ve searched the web and all the usual suppliers. Cheers. John.

[cass3958]

Just like the heater valve they are not only no longer available but they are also no repairable as they are a metal sealed container where the seal is a rolled metal lip. Impossible to undo without destroying the damn thing.

I might have a spare or two in my box of many things. Drop me a PM with your details and I will have a look for you. Can you update your location please as I am in the UK but I do not know where you are.

[John Quilter]

The exact factory replacement may not be available but I would think a good search at an auto parts supplier would turn up a suitable substitute that could be made to work. These devices are not uncommon in various cars over the years.

[JCS]

John
I believe an ignition distributor vacuum module might be adapted as a replacement, as I think you envisage.

If my memory is correct there were a number of industrial small air pressure chambers that would accept vacuum and do the job.

Norman

[John Quilter]

Not sure a distributor vacuum module would have enough travel but many cars used vacuum controls for climate controls systems that probably would work.