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John Deere Tractors Discussion Forum
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how to remove outer felt seal housing on 48 b jd?

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johns48jdb

02-28-2008 19:40:41




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i restored my tractor in 99 so its been a while since i've had to do anythinng to it, but for the past two years the oil runs out the axles. i know i need to replace the felts and seals, but i need to replace the seal between the power trol and the rear end because my oil keeps disappearing from the power trol and the rear end keeps getting fuller. how do i get the felt retainers off the end of the axle without busting them. would you put any heat on it at all? good bye paint job. how is the oil getting from the power trol into the rear end? oil is pumped up to the lift from the pto drive shaft driven pump i assume but i don't have a clue as to where the oil leak is or the part number for a seal(?) i think i have all the other part numbers down ok.

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Rodney Hecksel

03-03-2008 03:57:57




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-28-2008 19:40:41  
If you ever need to remove the felt retainers without opening the rear end, I just drill a couple of small holes and use a slide hammer with a small sheet metal screw on it to get them out. Then I cover the hole I drilled with a dot of weld and re-install them. However, it sounds like you need to open it up anyway to replace the seals. (my 2 cents)



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Maark

02-29-2008 13:17:47




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-28-2008 19:40:41  
Those outer felts are only there to keep dirt from going in. No need to replace them. Just wash them out with gas or another type of cleaning solvent. Put a lite coat of oil on them and reinstall them.Part# for the seal is AB1326R you will need 2 also B3622 gasket for the powertrol assy.



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johns48jdb

02-29-2008 18:30:53




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to Maark, 02-29-2008 13:17:47  
why 2 of the b3622. will one not work. does there need to be two for shimming or something. thanks for your time.



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PaulH

02-29-2008 04:36:39




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-28-2008 19:40:41  
I recently did this same job on a 1950 b and seems sucessful. First removed powertrol and rearend housing in one piece with a rolling lift and straight pull to rear then removed bull gears by using a piece of metal between axle nuts and pushing each side out to release bull gear and inside bearing. Shim bullgear up from bottom of rearend housing so it does not drop.Felt retainer will be pushed out with axle removal as outside bearing will After axles are removed a bar can be used and tap evenly around on seal from outer end of axle to remove with spacer. I installed two seals on each side as a noticable size groove worn in axle from old leather seals so did not reuse spacer to allow both seals in housing pulled into place with threaded rod from outer end of axle through the bearing race. Renewed felts installed after axle reinstall with a piece of pipe near outer diameter size of retainer over axle and driving gently until bottoming out in housing. I also changed inside and outside pto seals even though no leaks but did not want to remove thre powertrol at a later time. Hope this helps.
If you use two seals on axles make sure to apply lots of grease between seals after install as only lube for inside one also mop out axle housing well or oil will continue to soak out of felt seal.
Paul

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wilamayb

02-29-2008 04:20:16




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-28-2008 19:40:41  
Yes, just remove the wheels. Remove the power trol/power lift. Then remove the cotter pins from the bull gears and slightly loosen the nuts. Take a large wedge to drive in between the nuts to push the axles outward. Keep loosening the nuts and driving the wedge in more. If you have one axle not moving loosen the nut only on that side to catch it up.

Once the felt retainer housings are out of the housings the axles will move much easier.

You will need axle seals and felts for the end. I'm betting after you see your axle bearings you will want to replace those also. They run about $100 each. I think you can get all your axle parts for $500 or so.

Be sure to get all that oil out of the axle tubes before reinstallation. If not It will continue to seep to the outside. The tubes should be very clean and dry.


As for how your oil is transferring... There are a couple possibilities. One is the seal on the powershaft. It is possible that the rockshaft cylinder has cracked or the gasket between the cylinder housing and rockshaft housing has formed a leak. Check the whole housing for cracks. Anyting is possible with 60 year old castiron with 50 years of neglect.


When I think of "restored" I think of a tractor being restored to its condition when it left the factory, which can be expensive.

I guess the word can commonly be thrown around and can be translated as new paint and maybe a set of pistons and rings.

I have a late B like yours which has had new seals and axle bearings in the rear and a paint job, but I'm afraid it still does not qualify for "restored" It is simply an old B with a Paint job.

Just something for thought... Not trying to push your buttons.

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johns48jdb

02-29-2008 09:45:08




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to wilamayb, 02-29-2008 04:20:16  
thanks for the reply. does the outside retainer need to be driven off first or will it com off as the axle comes out. i busted one years ago and that was alot of fun trying to find a replacement part. i didn't know that there was any other seals inside the rear end as this was my first attept to work on a jd. i'd had the tractor and used it for 10 years or so before i restored it. i had some oil leakage but it wasn't much so i thought a set of felts would fix it. it did for about 6 years and then it started leaking real bad now. 10 or 12 tablespoonfuls over night and the rear end is real low of oil. i just show the tractor and seldom does it move over 100 foot so i drained the oil last year to try to get me through the show season. i have a fatal lung disease and my son wants to keep the tractgor so i need to fix it right. this is going to be so much fun. i have a set o planters and cultivators on this tractor so alot has to come off ust to get to every thing. looking forward to the repaining the back half and the rims to probably. thanks again.

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wilamayb

02-29-2008 13:09:32




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-29-2008 09:45:08  
Yes the retainer will be pushed off with the axle. This is the safest way to get it off without damage. There is actually a place making those felt retainers called "deerelydeparted"

There is a felt seal on the outside to keep in the grease that you pump in the outside bearing, and a seal on the inside to keep the trans/differential oil from escaping to the outside. This means that the inside bearings run in gear lube. The axle housing should be dry between the bearings.

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johns48jdb

02-28-2008 19:57:06




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-28-2008 19:40:41  
hi 55 50, there is a spacer of some kind next to the bearing so i wonder if pulling against that is a good idea or not. i've learned you don't take something apart that might break if you don't have the replacement part in your hand. i'd like to start on this thing tomorrow, but i'm going to get a lot of questions answered before i do much except get the power trol off and one wheel off. i've got a couple of old time jd mechanics who will come help me i'm sure, but i want to get all the grut work done before i call them in so i want take up their time. one guy worked for jd for nearly 60 years. he knows more than 20 of us all put together ever will.

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55 50

02-28-2008 19:48:08




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 Re: how to remove outer felt seal housing on 48 b jd? in reply to johns48jdb, 02-28-2008 19:40:41  
I was told a few years ago that the outer felt seal housings can be pulled with the outer axle bearings once the bull gear has been removed from the inner end of the axle. I haven"t tried this so don"t have first hand experience that it works.



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