shimano free hub replacement?
08-12-19, 09:21 PM
#1
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shimano free hub replacement?
I bought a used wheelset that has shimano deore fh-mt525 rear hub. I noticed there was play in the free hub. Greasing the bearings did not help, so it appears the free hub body needs to be replaced, unless there's an adjustment I'm missing. They do sell m525 free hub bodies for pretty cheap, but I'm wondering if there are better alternatives out there that would fit on there.
08-12-19, 09:27 PM
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Is the cassette body loose on the hub, or does it somehow have loose bearing in the freewheel part?
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Half-step triple, using double gear ~~~ 6400 STI rebuild walkthrough ~~~ Want 8/9/10s @126mm OLD? OCR. ~~~ Shimano cassette body overhaul ~~~ Ergopower Escape wear repair ~~~ PSA: drivetrain wear
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Sheldon Brown's bike info ~~~ Park Tools repair help
Half-step triple, using double gear ~~~ 6400 STI rebuild walkthrough ~~~ Want 8/9/10s @126mm OLD? OCR. ~~~ Shimano cassette body overhaul ~~~ Ergopower Escape wear repair ~~~ PSA: drivetrain wear
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08-12-19, 09:47 PM
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Shimano likely has a "higher grade" unit that will fit the hubshell interface, they've used the same lobed design for many decades. But one challenge with replacing freehub bodies with non spec ones is the resulting changes to the RH axle bearing location, it's sealing design and how to blend the new and old to end up with a working set up. It's not uncommon to need to change the RH cone and/or spacers to do this.
Regardless of the grade of the freehub body it will wear and, if used and maintained as before, have much the same expected life span. Why? Because the wear/stressed parts will still be steel as before. Andy
Regardless of the grade of the freehub body it will wear and, if used and maintained as before, have much the same expected life span. Why? Because the wear/stressed parts will still be steel as before. Andy
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AndrewRStewart
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08-13-19, 01:46 AM
#4
commu*ist spy
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idk, but the hub bearings are well greased and properly tightened. but there's still some lateral play in the cassette. it likely won't affect shifting very much in the bike i'm running, but still something i'll have to address one of these days.
08-13-19, 01:48 AM
#5
commu*ist spy
Thread Starter
Shimano likely has a "higher grade" unit that will fit the hubshell interface, they've used the same lobed design for many decades. But one challenge with replacing freehub bodies with non spec ones is the resulting changes to the RH axle bearing location, it's sealing design and how to blend the new and old to end up with a working set up. It's not uncommon to need to change the RH cone and/or spacers to do this.
Regardless of the grade of the freehub body it will wear and, if used and maintained as before, have much the same expected life span. Why? Because the wear/stressed parts will still be steel as before. Andy
Regardless of the grade of the freehub body it will wear and, if used and maintained as before, have much the same expected life span. Why? Because the wear/stressed parts will still be steel as before. Andy
08-13-19, 01:57 AM
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I've used a variety of Shimano freehubs.
As far as I can tell, the bearing races are good in all of their freehubs.
I haven't had any issues with the freehub internals.
Pretty much any 8/9/10 speed Shimano freehub should fit. Don't get 11 or 12 speed.
As far as I can tell, the bearing races are good in all of their freehubs.
I haven't had any issues with the freehub internals.
Pretty much any 8/9/10 speed Shimano freehub should fit. Don't get 11 or 12 speed.
08-13-19, 03:36 PM
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If it's play in the cassette body itself, it is possible to disassemble it and remove a shim or two, but you need to make a tool to engage the slots in the bearing cup.
__________________
Sheldon Brown's bike info ~~~ Park Tools repair help
Half-step triple, using double gear ~~~ 6400 STI rebuild walkthrough ~~~ Want 8/9/10s @126mm OLD? OCR. ~~~ Shimano cassette body overhaul ~~~ Ergopower Escape wear repair ~~~ PSA: drivetrain wear
List of US/Canada bike co-ops ~~~ Global list
Sheldon Brown's bike info ~~~ Park Tools repair help
Half-step triple, using double gear ~~~ 6400 STI rebuild walkthrough ~~~ Want 8/9/10s @126mm OLD? OCR. ~~~ Shimano cassette body overhaul ~~~ Ergopower Escape wear repair ~~~ PSA: drivetrain wear
List of US/Canada bike co-ops ~~~ Global list
