Any harm to grease packing oil cooled wheel bearings?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by JamesMc84, Nov 29, 2020.

  1. JamesMc84

    JamesMc84 Bobtail Member

    33
    3
    Mar 20, 2017
    0
    just came across some wheel bearings packed with grease on a drive axle. Oil mixing with the grease. Any harm to doing this?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Goodysnap

    Goodysnap Road Train Member

    2,081
    4,571
    Jul 12, 2017
    0
    When a drive axle wheel end is serviced correctly there should be no need for grease. When I see this, I automatically think someone is trying to cover up something, like a wheel seal that was messed up or rusted seal surface.

    Biggest hiccup is your relying on grease now to lube and cool the bearings, when its supposed to be oil. Oil cant flow through the bearings as designed.

    Id make it right if it were in my bay. Any less is asking for trouble. IMO
     
  4. stillwurkin

    stillwurkin Road Train Member

    1,722
    2,778
    Dec 2, 2017
    0
    Drive axle is a red flag. Like already mentioned. As you know differential surely isn't packed with grease..lol. On these container chassis, they are grease packed, i think, as there are lots of them with no way to add or check oil level. Newer ones not so. Have a sight glass, with a allen plug in the cover to add, or drain.
     
    AModelCat and Goodysnap Thank this.
  5. AModelCat

    AModelCat Road Train Member

    19,346
    85,629
    Jul 7, 2015
    Canuckistan
    0
    Grease in oil lubed bearings is a big no-no. Either they're trying to cover up a leaking seal or its a simple lack of knowledge.
     
  6. Goodysnap

    Goodysnap Road Train Member

    2,081
    4,571
    Jul 12, 2017
    0
    I had a coworker tell me once that he packed all wheel bearings to keep them lubed until they got oil. My explanation of how it worked fell on def ears. He indicated that- " that was the way he had always done it" . He did it my way as it was my shop. I cant recall his name so he didnt last long.

    Sometimes people are taught incorrectly and other times they just make dumb decisions because they dont know any better. You hit the nail on the head. LACK of knowledge.
     
  7. stillwurkin

    stillwurkin Road Train Member

    1,722
    2,778
    Dec 2, 2017
    0
    Yup. I just fill up the oil well in the hub. Get everything set, put cap on. Fill to level, then spin assembly a few times. Recheck oil level. Usually have to add a bit. When i start driving, go 10 or so miles or so stop and see how everything is. Temp and leaks. Take a peek at it during the day also. Mayby i worry to much?
     
    Bean Jr. and Goodysnap Thank this.
  8. AModelCat

    AModelCat Road Train Member

    19,346
    85,629
    Jul 7, 2015
    Canuckistan
    0
    Drive axle you just make sure diff is full, then jack one side up a couple inches, then the other. That lets the oil from the housing run down into the hub. Then just check/top off the diff.
     
    stillwurkin, Dino soar and Goodysnap Thank this.
  9. stillwurkin

    stillwurkin Road Train Member

    1,722
    2,778
    Dec 2, 2017
    0
    Yup on the drive. Can't see through axle end anyway.
     
  10. wore out

    wore out Numbered Classic

    12,267
    158,596
    Jun 5, 2013
    CHASIN THE DEVIL'S HERD
    0
    There is a plug on most drive hubs that let's you fill the center cavity after a repair. Takes the guess work out of it
     
    lester Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  • Draft saved Draft deleted