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Classic, Vintage & Veteran For Coventry and Meriden Models. Anything pre-Hinckley goes.

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Old 12-08-2012, 01:20 PM   #1 (permalink)
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OIF removing studs at oil sump

Has anyone replaced the studs for the oil sump on the frame? I removed the oil filter and discovered to two bad studs.
Do they tend to break, while being removed?
Any secret for success?
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Old 12-08-2012, 07:47 PM   #2 (permalink)
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Yes, I had to change one of these studs because of a bad looking thread. I was anxious just as you are, but as I had mine down to the bare frame I was willing to take a bit of a risk - if it had sheared off I could have taken the frame somewhere to get the broken bit removed. As it turned out it came out very nicely using a good quality pair of mole grips done up really tight. It is steel into steel, so unless there's a lot of rust (unlikely given the locatrion at the bottom of the oil tank), corrosion shouldn't be a problem. Get as good a grip as possible and unscrew - no reason why they should snap.

Last edited by JohnA; 12-08-2012 at 07:48 PM. Reason: Typo
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Old 12-08-2012, 08:43 PM   #3 (permalink)
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Quote:
Originally Posted by enuf View Post
Has anyone replaced the studs for the oil sump on the frame? I removed the oil filter and discovered to two bad studs.
Do they tend to break, while being removed?
Any secret for success?
Bad studs have been over-torqued and they can prove it.
Heat and Cold treatment has worked for many a folk who don't want to take a chanceof ruining a stud with two different threads.

New studs would be great to prevent leaks. . .
If you had two bad studs then you also had an oil leak?
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Old 12-10-2012, 09:21 AM   #4 (permalink)
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Thanks, for the info, amazing no major leak, studs out. looking for new replacements now.
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Old 12-10-2012, 09:47 AM   #5 (permalink)
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Mine were pretty chewed up when I came to renovate my T140V.

My 1976 parts manual has a mistake with the part number for these studs.

It quotes 21-2025. Should be 21-2109. Only cost a few bucks.

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