Check valve questions again

SVcummins · Posted: Mon Jan 11, 2021 2:00 pm Post subject: Check valve questions again

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

Wisconsin Cowman · Posted: Mon Jan 11, 2021 2:38 pm Post subject: Re: Check valve questions again

I would think you would have to drill deeper then .650” because he has the hole tapped to the depth of .650".

SVcummins · Posted: Mon Jan 11, 2021 2:45 pm Post subject: Re: Check valve questions again

I’m going to take it the machine shop hopefully he can figure it out

Wisconsin Cowman · Posted: Mon Jan 11, 2021 2:58 pm Post subject: Re: Check valve questions again

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.

SVcummins · Posted: Mon Jan 11, 2021 3:05 pm Post subject: Re: Check valve questions again

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

SVcummins · Posted: Mon Jan 11, 2021 3:15 pm Post subject: Re: Check valve questions again

The valve measures .769 diameter so that doesn’t fit .850 either . I’m not doing the work anyway

Cliff Nelson · Posted: Mon Jan 11, 2021 8:39 pm Post subject: Re: Check valve questions again

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.

SVcummins · Posted: Mon Jan 11, 2021 9:16 pm Post subject: Re: Check valve questions again

I just ask my dealer if he had any instructions

wore out · Posted: Mon Jan 11, 2021 9:34 pm Post subject: Re: Check valve questions again

SVcummins · Posted: Tue Jan 12, 2021 1:32 am Post subject: Re: Check valve questions again

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

SVcummins · Posted: Tue Jan 12, 2021 1:41 am Post subject: Re: Check valve questions again

Where do you find anything that matches up with .650 or .
850?

wore out · Posted: Tue Jan 12, 2021 3:42 am Post subject: Re: Check valve questions again

Tx Jim · Posted: Tue Jan 12, 2021 3:47 am Post subject: Re: Check valve questions again

SVcummins · Posted: Tue Jan 12, 2021 5:55 pm Post subject: Re: Check valve questions again

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

SVcummins · Posted: Tue Jan 12, 2021 5:57 pm Post subject: Re: Check valve questions again

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

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