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Farmall & IHC Tractors Discussion Forum
:

Looking for torque specs axle clamps, Farmall 400

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Redturbo

08-18-2016 21:46:55




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My Dad just brought a Farmall 400 last weekend, I hauled it back for him. The rims were put in dish out, putting them to dished in right now. Doesn't anybody know what IH torqued the 4 bolts that hold the hub to the axle? There 7/8 fine thread grade 5 bolts. I have searched the internet & found a wide range of torque specs for 7/8 bolts. I rather not break them off, going to be ordering service manual for this tractor from binder books. As its not a W series, so its weird to us.

thanks

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Redturbo

08-24-2016 19:47:50




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to Redturbo, 08-18-2016 21:46:55  
Great info D Slater, I backed the bolts down to 400 ft lbs. Thanks again, Scott.



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Redturbo

08-20-2016 11:15:34




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to Redturbo, 08-18-2016 21:46:55  
I searched for bolt torque specs online, get a few different numbers. For an average, 7/8 grade 5 bolts torque was 355 ft lbs, 7/8 grade 8 bolts were 500 ft lbs. I picked up 8 new grade bolts & lock washers. Put never seize on the threads on them, torqued to 450 ft lbs. I was just wondering what the cast cap that the bolts thread into would strip out or break at? Think I will just stop there. Thanks guys.

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D Slater

08-21-2016 17:11:18




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to Redturbo, 08-20-2016 11:15:34  
Maybe my manual printed in October of 62 has a mistake. It says 240 to 280 ft. #. I need to check that out. No lock washer was used on the bolts. They changed bolts around serial 9 or ten thousand. Bolts used after that were longer and were smaller between threads and to about 3/4 inch below head.



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D Slater

08-23-2016 04:57:28




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to D Slater, 08-21-2016 17:11:18  
After figuring out the first manual I looked at must have a misprint for clamp bolts on a 560. Looked at a 400 operators or final drive manual that doesn't give a torque but a 450 with 4 inch long bolts says 390 to 440 Ft. lb.



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The tractor vet

08-19-2016 20:30:05




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to Redturbo, 08-18-2016 21:46:55  
Ya want around 475 ft.lbs on clean chased threads with a bit of lube , you can use engine assembly grease or never seize



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F-Dean

08-19-2016 07:33:23




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to Redturbo, 08-18-2016 21:46:55  
Yes, switch to grade 8 bolts! Never too safe, especially when traveling in road gear.



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D Slater

08-19-2016 06:57:23




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to Redturbo, 08-18-2016 21:46:55  
240 to 280 for grade 8 clamp bolts. Don't remember seeing the number for the grade 5 ones. After snugging down evenly, a 3 or 4 foot cheater pipe and a pretty good bit of pressure is how I finish them off.



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S2710

08-19-2016 19:38:28




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 Re: Looking for torque specs axle clamps, Farmall 400 in reply to D Slater, 08-19-2016 06:57:23  
I agree with the cheater pipe. If you break one now it is better then when you are driving. I always say to tighten them as tight as you can and then give them a half a turn more. If you break one replace all of them because if one broke the rest are not far behind.

Bob



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