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Discussion Topic:
'36 Ford water pump probe opening
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rogbell |
12-10-2015 @ 10:54 AM
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New Member
Posts: 106
Joined: Dec 2009
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Anyone know what the thread and size of the opening where the water temp probe is scr*w*d into the water pump? Thanks..
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fenbach |
12-10-2015 @ 6:41 PM
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Member
Posts: 227
Joined: Dec 2009
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it's 3/8" pipe thread. a 5/8 bolt with 18 thread count will fit, but it isn't tapered. see line 4, columns 2, 3 and 4 in this chart. http://www.fairburyfastener.com/xdims_pipe_threads.htm also, I put in a Wells, SW508 temperature sensitive switch with metric threads, M16 x 1.5 . you can see it by searching for sw508 on this page http://www.wellsve.com/parts
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40 Coupe |
12-12-2015 @ 5:30 AM
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Senior
Posts: 1675
Joined: Oct 2009
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For the 35-36 water pump they are 5/8-18 this is a straight thread and not tapered pipe.
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rogbell |
12-14-2015 @ 3:27 PM
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New Member
Posts: 106
Joined: Dec 2009
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Thanks for the reply. Will I have to use something like teflon tape to seal?
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40 Coupe |
12-15-2015 @ 4:03 AM
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Senior
Posts: 1675
Joined: Oct 2009
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Look into the hole and you will find a seat for the brass temperature probe. clean the seat, so the probe can sit on it and seal any water leak when the nut is tightened. Suggest you use a line wrench to tighten the nut. If the seat has voids or is cracked or broken there is no way to maintain a leak free seal. there is no need for any sealing product, but you may want to put a small amount of never-seize on the nut thread.
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trjford8 |
12-15-2015 @ 2:53 PM
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Senior
Posts: 4214
Joined: Oct 2009
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I avoid the Teflon tape on anything automotive. I prefer the Teflon paste on threads and it is also a sealer.
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rogbell |
12-16-2015 @ 8:57 AM
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New Member
Posts: 106
Joined: Dec 2009
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Thanks for the suggestion, I'll use the paste.
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transbytip |
12-18-2015 @ 4:44 PM
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Member
Posts: 19
Joined: Dec 2011
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I have found that a unit that has not been apart for a while the nut will try to turn the tube with it I solved this problem by taking the w.p. loose from head then turning the pump off the nut this will not twist the capilary tube.works for me Cliff.
with reguards Cliff. Tipton
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