rob77 Posted October 26, 2019 Report Share Posted October 26, 2019 Hi all, Currently doing a bit of work on my 2017 250 gas gas I bought earlier in the year. I have done the rear wheel bearings and now onto the front, but struggling on how to drive the bearings out. There is no lip to get any purchase on I read on here the 1p trick for the rear bearings which worked a treat, but can't find anything in the front. Thanks for your help! Rob Quote Link to comment Share on other sites More sharing options...
cascao Posted October 26, 2019 Report Share Posted October 26, 2019 You will need a expanding mandrel to drive this bearing out. Jitsie sell them Quote Link to comment Share on other sites More sharing options...
Bm1200 Posted October 27, 2019 Report Share Posted October 27, 2019 If you have a welder stick a bolt or nut in the middle, tack it in and drive the bearing out, warms the hub nicely to get the new ones in too. Quote Link to comment Share on other sites More sharing options...
huski Posted October 27, 2019 Report Share Posted October 27, 2019 You can use a rawlbolt as an expanding mandrel.Its best to warm the hub up first 1 Quote Link to comment Share on other sites More sharing options...
mcoulson Posted October 27, 2019 Report Share Posted October 27, 2019 There is an inner aluminium spacer between the two wheel bearings. It will pry to one side enough to start tapping out the bearings. Quote Link to comment Share on other sites More sharing options...
baldilocks Posted October 27, 2019 Report Share Posted October 27, 2019 I've a 10mm steel rod , I put that through the wheel onto the inside lip of the bearing then put a flat screw driver above it and lever the rod down. While it has some tension on it belt the other end with your favourite hammer. It only has too move a couple of mm and the bearing spacer will move. Quote Link to comment Share on other sites More sharing options...
rob77 Posted October 29, 2019 Author Report Share Posted October 29, 2019 thanks all. If the spacer will move a bit I'll give that another go before buying anything. Cheers Quote Link to comment Share on other sites More sharing options...
thall1 Posted October 29, 2019 Report Share Posted October 29, 2019 I file two slots opposite each other in one end of the spacer big enough to allow a suitable drift to get past and onto the inner race of the bearings...usually 10mm wide so I can use 10mm dia Ali bar to just release the pressure on the spacer so it moves easily to one side. Quote Link to comment Share on other sites More sharing options...
anotherfive Posted November 1, 2019 Report Share Posted November 1, 2019 That's a top tip by Thall1. Its what I do too.Also warm outside of hub when removing too. It all helps. Quote Link to comment Share on other sites More sharing options...
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