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Grease Or Oil Leaking On My Front Wheels...

Discussion in 'Early CJ5 and CJ6 Tech' started by Broylz, Jul 12, 2016.

  1. Broylz

    Broylz Member

    I just noticed after leaving work for the day that both front wheels had a small pool of oil on the wheel. Like an inch diameter puddle, not a lot. Looks like it came from the hubs maybe. I dont think that its brake fluid. It is on the outside of my wheels.

    Are there any common things i should be looking for before i just start tearing it apart to look?
     
  2. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    You have closed knuckle D25or 27 axle? Could be leaking knuckle seals. They are filled with a thick oil/greasy lubricant that can leak out.
     
  3. Broylz

    Broylz Member

    Im not really sure. Its a 1970 that i believe is all stock. I thought it should be a 27. Will look and get back.
     
  4. maurywhurt

    maurywhurt Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Be very careful driving it until you figure out exactly what the problem is. One of my axle (knuckle) seals failed recently on my '67 with a Dana 27. After it was taken apart, it became clear that grease and/or oil had leaked down into the passenger side front brake drum, causing the brake on that wheel to stop working altogether.

    I discovered there was a problem when I hit the brakes and found out the hard way that only one front brake was working. The driver's side front wheel locked up, which caused the jeep to jerk hard to the left. Fortunately there wasn't a car in the next lane, as that's where I ended up by the time I got it stopped.

    The front brake shoes had to be replaced, as the ones on the passenger side were completely saturated. I went ahead and replaced the axle seals on both sides at the same time.
     
    Last edited: Jul 12, 2016
  5. Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    probably wheel bearing grease leaking through hubs . if the knuckle grease is too thin . it will weep through the inner spindles and thin out wheel bearing grease
     
  6. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    x2

    But why is it both front wheels at the same time? What have you done lately that would affect both?
     
  7. Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Would also check to see if axle vent is clear of debris.
     
  8. Broylz

    Broylz Member

    i just got this jeep thurday night. drove it 2 hours home on the highway. took it on another 2 hour trip to visit a buddy over the weekend and now just 3 miles to work during the day. there was more oil on the wheel this morning the same as when i left work yesterday. I will likely be ordering seals and bearings today to replace them this weekend. i need to pull the brakes apart to see if it got in there too.
     
  9. Twin2

    Twin2 not him 2024 Sponsor 2023 Sponsor 2022 Sponsor

    go buy the 4WD nut socket . while at parts place
     
    47v6 likes this.
  10. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    PO or Jiffylube may have overfilled it just before selling? Don't go crazy ripping it apart until you check the basics.
     
  11. Focker

    Focker That's a terrible idea...What time? Staff Member

    Good advice.
     
  12. Glenn

    Glenn Kinda grumpy old man Staff Member

    I wonder if it has locking hubs.....maybe not or maybe they were locked in? Hopefully not in 4WD the whole time.
     
  13. Broylz

    Broylz Member

    Hmm. I actually havent checked that... i know the tcase is in 2 high but didnt think to check the hubs. Too much time away from jeeps with sports cars. I appreciate the info so far.
     
  14. Glenn

    Glenn Kinda grumpy old man Staff Member

    Just wondering because maybe the spinning u-joints would cause enough turbulence to thin the lubricant and maybe force it out?
     
  15. Broylz

    Broylz Member

    I checked this morning and they are out as they should be...
     
  16. Glenn

    Glenn Kinda grumpy old man Staff Member

    Checking the levels as mentioned is your next step then. Definitely check the differential level too. Who knows what people have done with fluids, types and levels over time.
     
  17. noahlon

    noahlon Old Fart

    Any time I purchase a used vehicle, I drain everything , check for water and shavings in the fluids and refill with new. You never know what kind of care the PO kept up.
     
  18. Glenn

    Glenn Kinda grumpy old man Staff Member

    I found a knuckle pudding consistency in my wagon front differential when I bought it.
     
  19. Broylz

    Broylz Member

    Ive read it should be full of grease and it should be a mix of grease and gear oil. Which is correct?
     
  20. Glenn

    Glenn Kinda grumpy old man Staff Member

    The front differential should be full of gear oil. The knuckles also should be full of gear oil. Knuckle pudding is grease and gear oil mixed together. Knuckle pudding is the best bet for the knuckles.