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AC 180 diesel fuel shutoff leak


 
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A.Jackson
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Joined: 21 Aug 2013
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PostPosted: Wed Aug 21, 2013 12:26 pm    Post subject: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

Hi folks-

I have a fuel leak, pretty good drip at the mechanism that cuts off the fuel and shuts down the tractor. It's on the outboard side of what I believe is the injection pump. doesn't leak when the fuel is shut off, only on. Doesn't affect the running of the motor. Any help appreciated. Maybe an 'o' ring?
 
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cole in mo.
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PostPosted: Wed Aug 21, 2013 4:00 pm    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

Have you tried tightening that line a little?
 
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Bob Bancroft
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Location: Aurora NY

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PostPosted: Wed Aug 21, 2013 4:06 pm    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

A local pump guy was good enough to describe how, and gave me the parts to fix one of mine once. As I recall you take the top cover off, pull a special clip out of the shaft assembly, and it will come out. And I believe it was an o-ring.
 
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Dieseltech
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PostPosted: Wed Aug 21, 2013 6:48 pm    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

The top cover comes off, shutoff cam pulled out of the notch, then stop shaft will pull out to replace the O ring. This may fix it for awhile, but if flex ring is failing inside the pump will need repaired. Small bits will plug the return fitting and cause housing pressure to rise making more leaks. Most pumps I see are needing pilot bushing replaced also.
 
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A.Jackson
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PostPosted: Thu Aug 22, 2013 6:38 am    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

Yeah tried tightening. No luck.
 
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A.Jackson
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PostPosted: Thu Aug 22, 2013 6:39 am    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

Thanks. Think I'll try it.
 
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A.Jackson
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PostPosted: Thu Aug 22, 2013 6:41 am    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

I'll try the o ring thanks. If not, do you work on these ?
 
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Dieseltech
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PostPosted: Thu Aug 22, 2013 2:23 pm    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

Yes. I repair and mail pumps. Be glad to answer any questions you have, E-mail is open.
 
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A.Jackson
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PostPosted: Sat Aug 31, 2013 11:28 am    Post subject: Re: AC 180 diesel fuel shutoff leak Reply to specific post Reply with quote

Thanks for answering my question about the fuel leak. I think I need to have the injector pump rebuilt. Is the R and R something a shade tree mechanic could do if you rebuilt it. I'm pretty handy and I think I've located a service manual to help in the removal and replacement. What would you charge for a rebuild of the pump? The tractor is a 1969 AC 180.
 
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