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Bearing and grease questions....

Discussion in 'Mechanic and Repair' started by HighGrass, Jul 17, 2006.

  1. HighGrass

    HighGrass LawnSite Bronze Member
    from Z5 MA
    Posts: 1,237

    I have a 2001 Exmark LZR HP. Just did the wheel bearings on one side and the races were a bear to remove and install but I got it done. Here are the questions...

    1) That big cavity inside between the wheel bearings....exactly how much grease do you put in there? There are no fittings on these wheels BTW.

    2) Is there a decent specility tool for bearing race removal and installation?


    Thanks!
     
  2. Grass Man

    Grass Man LawnSite Senior Member
    Posts: 272

    .... I use what they call a bearing splitter and or press. Sometimes a bearing puller.
    :)

    .
     
  3. Let-it-mow!

    Let-it-mow! LawnSite Member
    Posts: 91

    A slide hammer with a 3 jaw puller attached.

    Turn the jaws around to grab the inside of the bearing race and jerk the race out.

    [​IMG]

    [​IMG]
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    I took a steering shaft out of a Sears Lawn tractor and cut a section 12" long out of it, Use it to drive bearings and races out of wheels, Deck spindles, Castor fork tubes and many other places.
    If it's a tapered roller bearing with separate race I have one of these to reinstall the races; http://www.jcwhitney.com/autoparts/...004136/N-111+10205+600009649/c-10105/TID-0820 It also works well for installing grease seals.
     
  5. notoriousDUG

    notoriousDUG LawnSite Member
    Posts: 70

    For a severly stuck race in a hub weld a bead all the way around the center of it and it will just about drop out.

    You can also torch cut a slit in the race and it will drop out, if you are good with the torch it will not damage the hub.

    Generally a drift or punch with a good sharp edged point tip from the oposite side in a star pattern will work well.

    I usually do not fill the void between but do put in a liberal amount of grease.
     
  6. fly-4-fun

    fly-4-fun LawnSite Member
    Posts: 0

    Unless the outer race is bad, I usually leave them in the housing. I clean the housing of old grease, inspect the race, repack the bearings and I'm done. No need to put very much grease in the cavity of the wheel, it really won't do anything but attract dust.
     
  7. oldrustycars

    oldrustycars LawnSite Senior Member
    Posts: 301

    i was told by the tech department of Dexter axle...the center of a hub just needs a thin film of grease to prevent rust. ive probably packed more bearings than anyone here except Restrorob, and never had a problem this way.
     

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