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Alex Grant
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How hard is it to change out the seals for the side axle shafts on the diff. For the tr4a?
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TR4/4A Changing rear diff seals
- Thread starter Alex Grant
- Start date
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M_Pied_Lourd
Darth Vader
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If it is something I can't do myself at home with the equipment that I have available then I consider it a little difficult. I don't do these at home...I send them out. If they are not done correctly, it can result in bent/broken flanges etc and then you have a bigger problem...
Cheers
Tush
Cheers
Tush
trrdster2000
Luke Skywalker
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Alex, It requires a press and a very shape flange tool to grab the edge of the bearing. HF press $129 and flange tool $59, verses $10 for each for a shop to do it. You will have to take the rear drive shafts off the outer axle and the four bolts that hold that on.
They only come out with the flange in a certain position.
Wayne
They only come out with the flange in a certain position.
Wayne
trrdster2000
Luke Skywalker
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Or stop them by here on your way to Florida next month to get out of the cold. LOL
Wayne
Wayne
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Alex Grant
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Probably taking them to a shop is worth it. Less grief and aggravation. I'm guessing by looking at the shop manual the bearing needs to be removed to get to the oil seal. And can the bearing be saved or does it get destroyed getting to the seal?
My humble opinion is that taking the axles to a machine shop that doesn't have the fixture to support the flange is a crap shoot. There is a good chance that the flange will be destroyed or it won't come apart. There is a method of replacing the seal without removing the flange, but it does involve some machining the small shoulder on the axle and making a ring to replace it. It is shown here, near the end of the article. https://bullfire.net/TR6/TR6-38/TR6-38.html
Probably a better alternative would be to send them to Phil Jaegeling (I sure someone will chime in with his email address), has the proper equipment, and (I think) only charges for shipping to dissassemble the axles.
Berry
Probably a better alternative would be to send them to Phil Jaegeling (I sure someone will chime in with his email address), has the proper equipment, and (I think) only charges for shipping to dissassemble the axles.
Berry
TR3driver
Great Pumpkin - R.I.P
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The bearing doesn't need to come off (assuming you can get the flange off). The seal is in the retaining plate that you take off before removing the bearing from the shaft.
TR3driver
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Come to think of it, that may be why it worked for me. I've got a pair of press plates that fit perfectly behind the flange. When I modified some plates to fit that well behind the rear hubs (for my solid axle TR), they started coming apart much easier as well.
TR3driver
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Understood, Berry. I was replying to Alex, not you. Hopefully I've made that clearer now.
M_Pied_Lourd
Darth Vader
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Alex Grant
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Thanks for your help guys!
OP
Alex Grant
Member
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Finally got around to changing seals on the diff. I was able to press out one of the axles with my 12 ton press, but the other one was more stubborn. Took it to a friends shop and got axle out with 30 ton press, glad I did this , the seals were shot.
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