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Farmall & IHC Tractors Discussion Forum
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SC Rear Axle Seal Bearing Replacement ....Long Po

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Skycarp

03-10-2007 17:42:35




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I just finished replacing the inner and outer axle bearings and seals on my Super C, as part of the restoration project I have been on for months. I have to tell you, there are some issues that a first timer has to be aware of.

First off, don’t think you can get away with only taking out the inner bearing and seal. You have to remove the outer seal retainer and remove the outer bearing. The axle will not slide out of the axle carrier due to the center part of the axle being larger then the inner bore of the outer bearing. And, the buildup of sludge, old trans oil, and just plain ole dirt in the axle carrier needs to be cleaned out too.

The steps I took to reinstall new seals and bearings are as follows:

New inner seal pressed into the axle carrier. The inner seal can be damaged easily when inserting it into the axle carrier if you do not have the correct size seal pressure tool. I suggest using a pipe type tool rather than a blunt type press tool. I damaged the first seal using a blunt tool. Also, the lip of the seal faces toward the chassis.

Next insert the inner axle bearing into its carrier space. I had to use mild pressure for this insertion. This is a roller bearing so it takes a little pressure to seat the bearing.

Next the axle was installed from the outer end of the axle carrier. The pressure of inserting the axle through the bearing is likely to push the inner bearing out of its carrier space. I had to put the axle carrier in a vertical position with the spline down on the floor over a piece of short pipe that fit over the axle and onto the bearing race. I drove the axle through the bearing with a dead blow hammer till it was home, all the time being careful to not damage the inner seal surface with the axle.

While still in the vertical position over the short pipe, I drove the outer bearing over the outer end of the axle into its carrier space. This may or may not be and easy job. My outer bearings were a tight fit in the carrier so I had to use a large blunt punch the size of the space between the axle and the carrier so I could make even contact with the inner and outer bearing races at the same time. It took a while to get these bearings home. They have to recess into the axle carrier so the recess on the outer seal carrier can fit into the axle carrier. I would recommend that you not rely on the four bolts of the seal carrier to do the work of seating this bearing. It is likely you will strip or break the bolts. Take the time to drive the bearing all the way into its machined carrier before installing the outer seal carrier.

Hope this helps someone else. If I missed something feel free to add to it.

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Skycarp

03-13-2007 20:04:47




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 Re: SC Rear Axle Seal Bearing Replacement ....Lon in reply to Skycarp, 03-10-2007 17:42:35  
Well, I just found out something tonight that would speed up the reinstallation of the bearings. On the inner bearing there is a retainer ring with four bolts to hold the bearing in place. If I had put the rings on after inserting the inner bearing in the axle retainer, I wouldn't have had to invert the axle on a piece of pipe to hold the bearing in while I was installing the outer bearing and seal retainer. Duh!!!

Anyway, I installed one axle on the chassis. It was a bi*ch to do alone as the bull gear didn't want to slide onto the axle spline, and the axle retainer will not go in place before the bull gear is on the spline. Both actions have to take place at the same time. I did get it on, but there was a lot of cussing and swearing. My poor dog had both paws over her ears!!

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gab

03-10-2007 20:44:03




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 Re: SC Rear Axle Seal Bearing Replacement ....Lon in reply to Skycarp, 03-10-2007 17:42:35  
Have you got the top cover off or could you get the bull gear off through the pto cover? My Super C has a little end play in the right axle but I don't want to knock off any more paint than I have to. Jim



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Skycarp

03-11-2007 06:17:33




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 Re: SC Rear Axle Seal Bearing Replacement ....Lon in reply to gab, 03-10-2007 20:44:03  
Nope, I wouldn't try it. It is possible I guess, but I would never try it after seeing the size of the hole in the case. The opening at the PTO is less than 6 inches square. It would be very difficult to get to the bull gear through the PTO end unless you have a very long and very skinny arm and can work at it without seeing what you are doing.

The bull gear is quite heavy and you will be lining up the splines and the two holes where the bull gear connects to the axle while doing all the work with one hand through the hole. If you drop your tools or the fasteners into the bottom of the case then you will most likely have to open the top anyway.

How do you plan to take up the end play on the axle shaft?

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Randy in NE

03-12-2007 06:55:34




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 Re: SC Rear Axle Seal Bearing Replacement ....Lon in reply to Skycarp, 03-11-2007 06:17:33  
I removed the left axle on my C by entering through the pto cover. It is a tight fit. A long handled wrench or rachet helps. An IH mechanic gave me a good tip. Leave the wheel on the axle and jack it up just off the ground. Once you have the retaining bolt on the bull gear loosened you can rotate the wheel and spin the bolt out. There are two of them, both fine threaded. Long skinny arms helps when you go to put the bolts back in.

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