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Massey Harris & Massey Ferguson Tractors Discussion Forum
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MF 65 Diesel Rebuild Mistake -- need advice

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Dev

03-02-2005 09:25:45




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Hi All, I completed rebuilding my ad4.203 perkins diesel engine, it runs execellently and has good power. I realised when I was torquing the head bolts that my torque wrench reads in Newton Meters. This was easily corrected for the head. But the oil pan and front axel are back in place.
I tightened the Mains to 85 Foot pounds(FP) they should be 110 FP and I tightened the rods to 60 FP they should be 80 FP. I am wondering will the toraue value of 85 FP for the mains and 60 FP for the rods be ok or will it be necessary to take off the pan and torque them correctly. Any opinions would be greatly appreciated. (What might) happen if I leave everything the way it is?)
Thanks in advance.

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dev

03-03-2005 09:33:40




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 Re: MF 65 Diesel Rebuild Mistake -- need advice in reply to Dev, 03-02-2005 09:25:45  
Thanks guys, I guess I will (even though I hate doing it again) drop the pan and retorque, it should only take me about a day...
Thanks Dev



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DavidP,South Wales

03-02-2005 13:46:38




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 Re: MF 65 Diesel Rebuild Mistake -- need advice in reply to Dev, 03-02-2005 09:25:45  
Hi,
Absolutely agree with Chris, the margin of under torquing is significant. Better to be safe than sorry for the small amount of work. You will be able to sleep at night.
Cheers
David P



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chris thompson

03-02-2005 09:37:26




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 Re: MF 65 Diesel Rebuild Mistake -- need advice in reply to Dev, 03-02-2005 09:25:45  
HELLO !!! advice PULL THE PAN !!! bolts have to be torqued to those specifications to achieve adequate bolt stretch for proper preload to maintain there tightness and not loosen while your in there why not remove bolts and apply blue loctite GREAT insurance !!! if you slightly overtorqued them i would not worry but your a fair shot under the proper torque specifications !!! at least its not that bad could be worse !!!

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