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Discussion Forum

1965 Allis Chalmers HD7G crawler

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Brian Allen

11-10-2010 08:31:38

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I thought I would try posting here on this forum.

RE:1965 Allis Chalmers HD7G crawler

I need an aspirator for a 7000 engine (344 CI); in my parts book the aspirator part number is 634092.

The center is completely rusted out of mine, I can copy it, but need some information/pictures/diagram regarding the center, if I have to go that way.

1. Does anyone make an aftermarket aspirator to fit this tractor?

2. How high does the center pipe extend inside the aspirator?

3. Last but not least, what does this do?

4. Can it hurt the engine if operated without it?

Thanks, any help is appreciated.

third party image

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Brian Allen

11-21-2010 20:08:49

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 Re: 1965 Allis Chalmers HD7G crawler in reply to Brian Allen, 11-10-2010 08:31:38  
a/c boy

Click on the "Yesterday's Tractors Forum Index" near the top of the page, then click on "Crawlers, Dozers, Loaders and Backhoes" read through until you find my post.

Post back if you get lost.


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Brian Allen

11-11-2010 07:00:09

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 Re: 1965 Allis Chalmers HD7G crawler in reply to Brian Allen, 11-10-2010 08:31:38  

Swing over to the crawler forum and see my posts there regrading this.

(This is my understanding) It is a metal chamber that pushes/pulls air into the exhaust stack.
It is mounted on the turbo and extends into the hood pipe when the hood is in operating position.

Why it is needed I can't seem to find out.


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11-10-2010 14:54:52

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 Re: 1965 Allis Chalmers HD7G crawler in reply to Brian Allen, 11-10-2010 08:31:38  
What is an asperator?

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a/c boy

11-14-2010 06:01:39

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 Re: 1965 Allis Chalmers HD7G crawler in reply to hd6gt, 11-10-2010 14:54:52  
How do you get to the crawler fourm?

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