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Farmall & IHC Tractors Discussion Forum
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460 diesel trans main shaft

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polinidad

11-04-2007 05:11:37




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Anyone with a 460 shop manual? Does the main shaft in transmission have to be pulled from the back of case or the front. Can"t seem to get it to go either way.




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D Slater

11-04-2007 15:08:56




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 Re: 460 diesel trans main shaft in reply to polinidad, 11-04-2007 05:11:37  
If you have tractor split in front of transmission case, remove the bolts from main shaft rear bearing cage. Then push shaft and bearing cage to front(watch the shims behind bearing cage)when it clears at rear move shaft into a position to be lifted out the top. Don't know what your doing but shaft can be removed from rear also. Bull gear has to be moved out of way and differential removed. main shaft bearing retainer and the snap ring on shaft moved forward. Carefuly drive rear bearing forward until it will slide on shaft. Slide shaft to rear out of the gears and bearing. If there's a chance anythings not okay on transmission counter shaft I wouldn't recomend the last, because if there is a split at front will be needed anyway.

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TominKy

11-04-2007 06:38:32




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 Re: 460 diesel trans main shaft in reply to polinidad, 11-04-2007 05:11:37  
After looking at my manual, it seems that the only way to remove the shaft is toward the front of the housing. On the rear of the shaft is a bevel gear that apparently will only come out the front. Manual shows that the shaft moves forward, and then the rear ( bevel gears ) tilt upward, and then the gears can be guided backwards and upwards out of the case. It's not clear from the pictures, but there seems to be a ring which fits into the rear case and is probably galded to the case, probably will take some hard whacks with a soft hammer and maybe a drift to get the assembly moving. No need I'm sure to warn about the use of steel tools and heavy hammers on cast housings. The ring I'm talking about is fitted into the case pretty much like a bearing race and will be an extremely close fit.

Tom

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polinidad

11-04-2007 16:42:09




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 Re: 460 diesel trans main shaft in reply to TominKy, 11-04-2007 06:38:32  
tractor is split at front of trans, top shaft is out, 4th gear has broken teeth, not enough space for rear shaft bearing to clear case and lift out. Can't move shaft back to clear front. Took idlers out, tried to drive bearing back off shaft after removing snap ring, but won't move. Going to take pto shaft out, remove bearing retainer and see if this will work. Thanks for all your help...



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D Slater

11-04-2007 17:10:42




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 Re: 460 diesel trans main shaft in reply to polinidad, 11-04-2007 16:42:09  
Bottom shaft is the counter shaft, top one is main shaft. If you have the pto shaft removed from inside counter shaft and the nut off the front. Rear pto shaft needs removed, then clutch and brake pedal cross shaft slid to one side, then remove pto shaft carrier bushing from rear of counter shaft.Take the strap bolt out on other end and you can leave bolt in bushing. Bushing with strap should slide out easy to rear. Now the counter shaft is removed out the rear with rear bearing on it. Sometimes the front bearing and then gears won't slide on the shaft very easy (actualy the shaft is sliding back through them) and sometimes they will. If you have to drive shaft back use something that won't damage threads or shaft.

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