Ambrosio Zenith hub bearing replacement.

anjasola
anjasola Posts: 145
in Workshop
New freehub fitted and need to replace two 6001 bearings,
Is it a straight forward job?
Any tips guidance appreciated.

Comments

  • ugo.santalucia
    ugo.santalucia Posts: 28,312
    Yes... need 5 mm Allen keys, then knock off the bearing with screwdriver and mallet and fit new ones using a home made press of some sort
    left the forum March 2023
  • anjasola
    anjasola Posts: 145
    ugo.santalucia said:

    Yes... need 5 mm Allen keys, then knock off the bearing with screwdriver and mallet and fit new ones using a home made press of some sort

    Thanks ..... appreciate

  • masjer
    masjer Posts: 2,655
    You'll also need a 17mm spanner to remove the end caps. The axle is held between the bearings, so remove the non drive side bearing first by gently tapping the axle to push the bearing out. Remove the axle, now you'll access to the drive side bearing (through the NDS), again tap out.
    When Installing new bearings, only pressing the outer race of the bearing. Sockets are good for this, or even use the old bearing. If you don't have access to a press- the new bearings can be (gently) tapped in- ensuring they're tapped in squarely and only by the outer race.
    It's much easier to extract/install bearings if the hub is gently heated causing the alloy to expand. A electric paint stripper is ideal. Sometimes people freeze new bearings (to slightly shrink them) before fitting -again to make it easier to fit.
  • masjer
    masjer Posts: 2,655
    One other thing, fit the drive side bearing first as it's easier without the axle in place.

    Good luck.
  • anjasola
    anjasola Posts: 145
    masjer said:

    One other thing, fit the drive side bearing first as it's easier without the axle in place.

    Good luck.

    Thanks appreciate
  • anjasola
    anjasola Posts: 145
    Job completed....... thanks again for advice help.
  • bondurant
    bondurant Posts: 858
    Glad it got sorted. As an adjunct, these guys are great for bearing-related tools: BearingProTools.com. Superb customer service, they went above and beyond to make sure I got the right kit for my Hope hubs.

    Obviously home-brewed is possible too.
  • david37
    david37 Posts: 1,313
    the wheels mfrg Large press is a thing of beauty and wonder to use.

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