Hub oil leak

Discussion in 'Peterbilt Forum' started by Bernard D, Apr 2, 2021.

  1. Bernard D

    Bernard D Light Load Member

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    • Have 03 pete. 379
    • 3.55 rears.
    • Always having leaky hub seal problem on same axl and hub.
    • #2 right side gets leaky every 6 months or so same hub.
    • What could it be ?
     
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  3. Deere hunter

    Deere hunter Road Train Member

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    Did you change bearings and races also?
     
  4. Bernard D

    Bernard D Light Load Member

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    • No sir ,but thanks for that because that just confirmed my thoughts and outers thanks.
     
    Deere hunter Thanks this.
  5. jamespmack

    jamespmack Road Train Member

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    How many miles on housings. My guess is the spindle is worn out, or ID of hub is worn out. Or possibly seal installed dirty or improper. Multiple possibilities.
     
    Hulld and Deere hunter Thank this.
  6. Deere hunter

    Deere hunter Road Train Member

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    Definitely a possibility, also check your breather tube to make sure your housing can breathe.
     
  7. jamespmack

    jamespmack Road Train Member

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    That will blow seals,but not normally the same one repeatedly. It will blow all of them, or oldest.
     
    Deere hunter Thanks this.
  8. Smellfunny

    Smellfunny Road Train Member

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    Also what kind of seal are you using? There is a difference.
     
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  9. jamespmack

    jamespmack Road Train Member

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    Thats the thing. Million different possibilities. Really need to teardown and have someone who knows whats going on look at it. Seen thousand of times people that don't know how or why to seal a stemco grit guard, then call them junk.
     
    Roger McG and Deere hunter Thank this.
  10. kwcam

    kwcam Light Load Member

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    Is it a Conmet type hub with the cone spacer between the bearings ? If so throw it out and set the bearing preload the conventional way. and us a stemco grit guard seal. we have had our best success this way.
     
    Roger McG and Deere hunter Thank this.
  11. Bernard D

    Bernard D Light Load Member

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    Thanks races, bearings,hub check out fine improper installs .
     
    jamespmack Thanks this.
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