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Help with wheel seal problems!!!!!!!

Discussion in 'Peterbilt Forum' started by volvodriver01, Oct 9, 2012.

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  1. Oct 9, 2012 #1
    volvodriver01

    volvodriver01 Road Train Member

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    Okay my problem is with my 1999 Peterbilt 377. Over a month ago I had a wheel seal that was leaking a little and the only way to see it leaking was after getting the tires off. So I had it changed with a roadrunner wheel seal. About 3 weeks later I noticed a lot of gear lube leaking from the same wheel seal so last night I had it replaced again and the old one blew out. There are no metal shavings or any damage to anything. Today I have a lot of lube leaking all over the ground and my axle vent is missing(blew out). My question is could my axle vent of been bad this whole time and kept causing my wheel seal to blow? Maybe this time it blew the wheel seal and blew out my axle vent? Thanks for the words of wisdom...
     
    volvodriver01, Oct 9, 2012
    volvodriver01, Oct 9, 2012
    #1
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  3. Oct 9, 2012 #2
    tank4life

    tank4life Light Load Member

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    The axle vent should be taken off and cleaned at every service. Is it the axle with the power divider or the rear axle? If it is the axle with the power divider make sure air is not leaking past the power divider actuator, if it is it will pressurize the axle and will cause seal failure and can blow the axle vent off.
     
    tank4life, Oct 9, 2012
    tank4life, Oct 9, 2012
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    volvodriver01 Thanks this.
  4. Oct 9, 2012 #3
    Superhauler

    Superhauler TEACHER OF MEN

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    shouldnt be any air going in when the power divider is deactivated. but it's a good place to start. sounds like a new bad seal or installed wrong. it happens! or with the new seal it built so much pressure that it blew off the breather. if it was plugged up.
     
    Superhauler, Oct 9, 2012
    Superhauler, Oct 9, 2012
    #3
    volvodriver01 Thanks this.
  5. Oct 9, 2012 #4
    volvodriver01

    volvodriver01 Road Train Member

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    Thanks for the reply tank4life. It would happen to be my front drive axle giving me the problem. Okay not to sound stupid but I try to do my own work to save some money so how would I know if air is leaking past my power divider actuator? Would me using my differential lock cause this? As I just used it last night to back into my driveway. Thanks agian.
     
    volvodriver01, Oct 9, 2012
    volvodriver01, Oct 9, 2012
    #4
  7. Oct 9, 2012 #5
    tank4life

    tank4life Light Load Member

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    Yes, it would be when you use your diff lock, when the diff lock is engaged listen by the axle vent for escaping air, if you hear escaping air the diaphram in the actuator for the power divider is bad. Often it is bleeding air into the axle it will also push gear lube out of the vent on top of the axle.
     
    tank4life, Oct 9, 2012
    tank4life, Oct 9, 2012
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    volvodriver01 Thanks this.
  8. Oct 9, 2012 #6
    volvodriver01

    volvodriver01 Road Train Member

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    Okay thanks alot tank4life. One more question then, if I replace my wheel seal again tonight as long as I don't use my diff lock then I SHOULDN'T blow another wheel seal? This will give me time to fix the diaphram in the actuator if its bad. I have went outside and I don't hear air leaking though so thats good.
     
    Last edited: Oct 10, 2012
    volvodriver01, Oct 9, 2012
    volvodriver01, Oct 9, 2012
    #6
  9. Oct 9, 2012 #7
    Flightline

    Flightline Road Train Member

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    If you drive in dusty conditions these axle vents get cloged which causes good seals to leak.
    The cure for dusty conditions is pull the vent off and run and air or hyd. line up to extend the vent higher and more forward for better protection. This seems to be a common problem among dump trucks running in the gravel pits.
     
    Flightline, Oct 9, 2012
    Flightline, Oct 9, 2012
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    w9l and volvodriver01 Thank this.
  10. Oct 9, 2012 #8
    tank4life

    tank4life Light Load Member

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    Yes, if you DO NOT use your diff lock all should be good. Just make sure that wheel seal is well seated and evenly seated before reinstalling the hub. If it has aluminum hubs make sure as you are putting the seal in that there are no aluminum shaving getting between the seal and the mating surface of the hub. Sometimes as you push the seal into place it will scrape little slivers of aluminum off the inside of the hub and they will get between the seal the mating surface of the hub causing the seal not to seat properly which can cause it to leak and fail permaturely.
     
    tank4life, Oct 9, 2012
    tank4life, Oct 9, 2012
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    volvodriver01 Thanks this.
  11. Oct 9, 2012 #9
    tank4life

    tank4life Light Load Member

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    A trick to use to get your wheel seals or bearing races into the hubs easier is to put them in the freezer for a couple of hours prior to instatllation. They will shrink up just a tad from the cold and it makes them much easier to install. FWIW, JHIDI.
     
    tank4life, Oct 9, 2012
    tank4life, Oct 9, 2012
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    volvodriver01 Thanks this.
  12. Oct 10, 2012 #10
    volvodriver01

    volvodriver01 Road Train Member

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    For an update and another question... So last night after getting good ideas and information from tanker4life I locked in my diff lock and listened for air leaking and also I put my finger over the hole for the axle vent feeling for air building up. NONE there is no air leaking or building so I don't think it has to do with my differential lock. Good... I don't think that my axle vent would cause the new wheel seal to blow out 2 times withing days apart. IF the axle vent was clogged then I would think my wheel seal on the other side would blow out being its older.... Since I have had the same place and same tech do the job the last 2 times I am thinking mayber he is using the wrong driver and not getting my wheel seal in properly??? Does anyone have any other ideas I could check??? Thanks
     
    volvodriver01, Oct 10, 2012
    volvodriver01, Oct 10, 2012
    #10
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