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Check valve questions again


 
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SVcummins
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PostPosted: Mon Jan 11, 2021 2:00 pm    Post subject: Check valve questions again Reply to specific post Reply with quote

When drilling the fitting am I supposed to drill to a depth of
.650 ?

 
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Wisconsin Cowman
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PostPosted: Mon Jan 11, 2021 2:38 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

I would think you would have to drill deeper then .650” because he has the hole tapped to the depth of .650".
 
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SVcummins
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PostPosted: Mon Jan 11, 2021 2:45 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

I’m going to take it the machine shop hopefully he can figure it out
 
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Wisconsin Cowman
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PostPosted: Mon Jan 11, 2021 2:58 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

He probably drilled it about a 1.00” if he stopped at .200 and tapped it .805”. Going by his numbers he has typed up.
 
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SVcummins
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PostPosted: Mon Jan 11, 2021 3:05 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

The valve measures about an inch and 410 thousandths so I don’t know what the numbers are he has . I don’t have a drill press or a bit
 
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SVcummins
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PostPosted: Mon Jan 11, 2021 3:15 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

The valve measures .769 diameter so that doesn’t fit .850 either . I’m not doing the work anyway
 
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Cliff Nelson
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PostPosted: Mon Jan 11, 2021 8:39 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

I drill them all the way to the intersecting hole as the original service bulletin states. Tap deep enough for the valve seat to thread in to the shoulder.
 
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SVcummins
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PostPosted: Mon Jan 11, 2021 9:16 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

I just ask my dealer if he had any instructions
 
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wore out
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PostPosted: Mon Jan 11, 2021 9:34 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

CVPost-svcummins wrote:
(quoted from post at 22:16:45 01/11/21) I just ask my dealer if he had any instructions


The instructions in your first post make perfect sense to me and you say you are having a machine shop guy do it, dunno why there'd be any issues, IMHO.
 
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SVcummins
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PostPosted: Tue Jan 12, 2021 1:32 am    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

I’ve had the shop do quite a few little jobs like this and they
are cheaper than buying the bit so that’s where it will go
 
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SVcummins
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PostPosted: Tue Jan 12, 2021 1:41 am    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

Where do you find anything that matches up with .650 or .
850?
 
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wore out
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PostPosted: Tue Jan 12, 2021 3:42 am    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

CVPost-svcummins wrote:
(quoted from post at 02:41:41 01/12/21) Where do you find anything that matches up with .650 or .
850?


That's the depth to which you run the tap down into the fitting.

I suspect you can get by with the lesser depth if using a bottoming tap to finish vs. using a "plug tap".
 
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Tx Jim
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PostPosted: Tue Jan 12, 2021 3:47 am    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

CVPost-svcummins wrote:
(quoted from post at 04:41:41 01/12/21) Where do you find anything that matches up with .650 or .
850?



 
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SVcummins
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PostPosted: Tue Jan 12, 2021 5:55 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

That makes sense . Now I just need to get it off and take it up
and let them do it . The dealer is sending a copy of the service
bulletin then I can take that with the parts
 
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SVcummins
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PostPosted: Tue Jan 12, 2021 5:57 pm    Post subject: Re: Check valve questions again Reply to specific post Reply with quote

Thanks it all makes sense now . I just hate dropping
something off with no idea what needs done
 
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