What does this do?

Engines and Engine Systems
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EdwardWT
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What does this do?

Post by EdwardWT » 26 Jan 2018 09:27

On the TD42 engine that I am putting in my patrol, there is this diaphragm that opens with vacuum which operates a butterfly inside the inyake manifold. As it was not connected to anything when I got the engine, i dont know where it is suppose to connect to nor what its purpose is. The engine is originally from a UD40 truck. When vacuum is applied to it it closes the air intake and when vacuum is released it opens again. Please assist
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georgeb
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Re: What does this do?

Post by georgeb » 26 Jan 2018 09:33

Wild guess - exhaust brake?
Groete/Regards,

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EdwardWT
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Re: What does this do?

Post by EdwardWT » 26 Jan 2018 09:36

Thats what I was thinking. Not sure though

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hugejp
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Re: What does this do?

Post by hugejp » 26 Jan 2018 15:02

Check with Michael he will be able to assist!
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Michael
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Re: What does this do?

Post by Michael » 26 Jan 2018 20:37

Wdward, I have rebuild a UD40 motor before, but cant really remember how this device looked and worked.

I think this is just a butterfly that closes when the engine js switched off (similar to the zd30). You can just remove it or leave it disconected......... its not needed
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EdwardWT
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Re: What does this do?

Post by EdwardWT » 29 Jan 2018 09:49

Thanks guys, much apprechiated

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