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svcummins
01-11-2021 14:00:42
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When drilling the fitting am I supposed to drill to a depth of .650 ? 
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Tx Jim
01-12-2021 03:47:06
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Re: Check valve questions again in reply to svcummins, 01-11-2021 14:00:42
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Quoting Removed, click Modern View to see
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svcummins
01-12-2021 17:57:12
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Re: Check valve questions again in reply to Tx Jim, 01-12-2021 03:47:06
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Thanks it all makes sense now . I just hate dropping something off with no idea what needs done
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wore out
01-12-2021 03:42:01
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Re: Check valve questions again in reply to svcummins, 01-11-2021 14:00:42
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Quoting Removed, click Modern View to see
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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svcummins
01-12-2021 17:55:39
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Re: Check valve questions again in reply to wore out, 01-12-2021 03:42:01
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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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wore out
01-11-2021 21:34:46
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Re: Check valve questions again in reply to svcummins, 01-11-2021 14:00:42
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Quoting Removed, click Modern View to see
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
01-12-2021 01:41:41
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Re: Check valve questions again in reply to wore out, 01-11-2021 21:34:46
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Where do you find anything that matches up with .650 or . 850?
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svcummins
01-12-2021 01:32:19
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Re: Check valve questions again in reply to wore out, 01-11-2021 21:34:46
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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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Cliff Nelson
01-11-2021 20:39:50
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Re: Check valve questions again in reply to svcummins, 01-11-2021 14:00:42
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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
01-11-2021 21:16:45
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Re: Check valve questions again in reply to Cliff Nelson, 01-11-2021 20:39:50
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I just ask my dealer if he had any instructions
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wisconsin cowman
01-11-2021 14:38:22
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Re: Check valve questions again in reply to svcummins, 01-11-2021 14:00:42
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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
01-11-2021 14:45:25
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Re: Check valve questions again in reply to wisconsin cowman, 01-11-2021 14:38:22
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I’m going to take it the machine shop hopefully he can figure it out
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wisconsin cowman
01-11-2021 14:58:17
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Re: Check valve questions again in reply to svcummins, 01-11-2021 14:45:25
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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
01-11-2021 15:15:02
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Re: Check valve questions again in reply to wisconsin cowman, 01-11-2021 14:58:17
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The valve measures .769 diameter so that doesn’t fit .850 either . I’m not doing the work anyway
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svcummins
01-11-2021 15:05:14
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Re: Check valve questions again in reply to wisconsin cowman, 01-11-2021 14:58:17
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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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