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Mains model C

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Keith-OR

07-08-2004 19:13:37




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Just wondering if this is a problem that others have had with the mains on a Model C. I had an oil leak at the rear of the engine, thought maybe it might be a worn rear main seal. Split the tractor and the rear seal retainer was completely loose only 2 bolts holding it in place,seal destroyed. also rear main was loose only one bolt in it, the other laying in the bottom of the pan. Lucklely main bearing and crank was good. One could tell it had been worked on before, NEW clutch disk (still had stamped #'s on both sides). I am assuming it was put together wrong. Oh! the wire was broken and only part of it was remaining. I need to replace wire but not sure what grade to use. I mic'ed it at 0.062. is there any special wire that is required.
Thanks..... Keith

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Dick L

07-08-2004 19:40:23




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 Re: Mains model C in reply to Keith-OR, 07-08-2004 19:13:37  
I have had a bunch of them apart and have not seen that. About half don't have the wires put back in. Most of the time it feels like my shoulder is going to pull out of joint backing the main studs out.
They must have forgot to torque that main if the other two are tight. It would be a good idea to retorque every thing while it is open. Better use plastigage and check the clearance while your at it. I use mechanics wire that I buy at NAPA. Not sure of the gage at the moment. What ever fits. The torque keeps it from turning.

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Follow up:

07-09-2004 10:17:44




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 Re: Re: Mains model C in reply to Dick L, 07-08-2004 19:40:23  
Dick, I checked the other two mains this morn, set my torque wrench at 50lbs to start with, was to high, ended up reducing it to 40lbs. Cannot believe someone would only torqued mains to 40lbs when manual calls for 80lbs.In all the years I have been turning a wrench, never found where someone has only torque to half of spec.s. Never fails to amaze me on what you might find.
Thanks



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Dick L

07-09-2004 11:46:07




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 Re: Re: Re: Mains model C in reply to Follow up:, 07-09-2004 10:17:44  
If ya have a week or more I can bend your ear around the clock with stories of wanta be mechanics. Like the dozer we bought that had just been overhauled. Took it out back after unloadin it for a test run. Spittin oil outa the exaust. The feller that we bought it from was not the one what overhauled it and he said opener up an he would pay for the parts needed. Pulled the engine and the pan, took a rod cap off and the first rod throw looked like it had been polishied with a hacksaw. Pulled a piston, slipped off a ring aand stuck it down the hole. ring gap was over 1/4".
To shorten this story, it took a new crank, camshaft, sleeve and piston set. Every one was unhappy over this deal and all cause it was sold as having an (overhaul) I got stuck with the labor and the other two split the parts.

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Keith-OR

07-08-2004 20:37:46




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 Re: Re: Mains model C in reply to Dick L, 07-08-2004 19:40:23  
Thanks Dick, Had planned to check torque on everything while it is open, no telling what else I will find. I forgot to say that the shims were even still there also. I checked the size of bailing wire It mic'ed at 0.075 and it fits through the holes on the main bolts, so I will use that. I had this motor running that is how I found the rear oil leak. Everything sounded fine , no noises, that is why I was really surprised on what all I found.
Again, Thanks Dick..... ..... .Keith

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