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MF 175 Drawbar bolt question

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Author  [Modern View]

04-19-2017 07:31:50

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We have a 1969 MF 175 diesel (LOVE it!). The other day I noticed a drip from the rear of the tra.ctor and it was coming from one of the 4 bolts that hold the drawbar assembly to the rear of the tractor. I drained the oil and removed the bolt. Well, one of the 4 bolt holes go all the way thru the casing, and the bolt was not the correct one and hence the leak. Someone has 'farmer rigged' it years ago apparently with a rubber boot and poly material, and my pulling the harrow jarred their fix loose. Is one of the holes meant to be a drain hole? On ours, the threads are stepped, so the bottom threads are bigger than those up higher in the casing. Is that normal or another of their 'fixes'? If not normal - any suggestions? Thanks!

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04-20-2017 07:07:34

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 Re: MF 175 Drawbar bolt question in reply to mf175s, 04-19-2017 07:31:50  
On something like that I'd use Permatex form-a-gasket no.1 sealant, sets quick, dries hard. Less likely to shake out than silicone IMHO.

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Phil Tibbetts

04-20-2017 05:55:53

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 Re: MF 175 Drawbar bolt question in reply to mf175s, 04-19-2017 07:31:50  
Sounds like the original hole was stripped so someone tried to drill and tap deeper and broke through into the oil sump. I would get the oil all drained out, flush the area with solvent to get as clean as possible, then get some red silicone gasket maker and put a good big bead around the shoulder of the bolt and half way up it. Then tighten the bolt back up good and let it set for a couple days to give the silicone time to set up. I've used this trick a few times and it worked. You may want to keep check of the bolt to make sure it don't loosen up again. Just my 2ents worth.

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04-19-2017 07:51:26

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 Re: MF 175 Drawbar bolt question in reply to mf175s, 04-19-2017 07:31:50  
When new, those holes never went through, all four were blind holes. Someone got carried away when trying to repair the damaged holes..

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04-19-2017 08:05:05

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 Re: MF 175 Drawbar bolt question in reply to Dieseltech, 04-19-2017 07:51:26  
I appreciate the info! Thanks.

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