Fitting the new bearing into the hub carrier is easy enough, but unfortunately, removing the old one is not. Replaced both of mine last year and had to use a local garage's press to remove the old bearings. Gauge on the press went up to 25 tons before the bearing moved.
A second hand hub may have a worn bearing in it.
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Is replacing the front bearings just as easy as rear ones?
No it's not. The rear bearing is supplied complete with the hub flange already fitted, so it's just a matter of removing the old hub and fitting the new one.
The front bearing is supplied separately, so you need a means of removing and refitting the bearing from and to the hub.
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So do I need a bearing puller? Do I need to buy the bearing "casette" and the flange?
You'll need more than a bearing puller. It needed a 25 ton press to get mine off. See post 2 above.
On one of mine, the bearing came off complete with the inner race, but on the other, the inner race, stayed on the hub flange and was impossible to get off without damaging the flange. I bought 2 bearings and 2 hub flanges. You also need 2 new hub nuts.
After fitting the new bearing, make sure the circlip is fitted in the correct position.
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Do you have a 2003 1.9 jtd multi wagon?