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Free Hub Help - getting my old bike back out

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Free Hub Help - getting my old bike back out

Old 04-14-19, 12:37 PM
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brs485932
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Free Hub Help - getting my old bike back out

Hello Everyone... Looking to get my old bike back out after 20+ years in the garage and hit the road again this summer. Bike is a Schwinn Clear Creek that I purchased new back in 1995 and put around 2000 miles or so on it according to the old trip meter I had back in the day. Long story short one day back around 1999 I was stuck and pushing extremely hard on the pedal to get going then herd a noise from the rear hub - after that it seemed the pedals would freewheel unless I gave them a very fast spin at which point sometimes they would engage and I could pedal forward. Bike sat for 10+ years and now the issue seems to have changed a bit. Pedals engage but do not seem to disengage LOL.... if I start to pedal and stop the chain seems to bounce up and down, slack up and down. it appears the gear on the back jams sometimes.... another 10 years and same issue- but now I wanna ride again.


I have been doing some googling the last few days and found some info - I have what I believe is a cassette for gears in the back with a free hub? its a Shimano Hyperglide-C. Looks like I need a puller to get the cassette gears off... then do I need to order a separate puller to get the free hub off as well? I have found some helpful youtube video's on how to tear down and grease the parts but not a lot of info if parts are available if I find something is broken in the free hub.



Any advice here? Mechanical skills are not an issue just not a lot of experience with bicycles. Any special tools I need to order?



Thanks!
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Old 04-14-19, 01:10 PM
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You don't need a "puller" to remove cassette cogs, if that is what you have. You need at least one chainwhip,along with a cassette spline tool, two if your freehub is an older version. As to removing the freehub, older ones do require that you pull them off, while newer ones only require a 10 mm hex wrench. However, if you have a freewheel you need a different tool
Pictures would be a help

Last edited by alcjphil; 04-14-19 at 01:37 PM.
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Old 04-14-19, 01:48 PM
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Possible ratchet issue inside the freehub body or freewheel core? If so not a likely to fix problem. Andy
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Old 04-14-19, 02:09 PM
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Tried to post a picture but got a message saying I cant post a picture until I have 10 posts on the forums. If its an issue with the free hub internals (assume it will be... something bent / broken) can I buy a replacement freehub for the Shimano Hyper Glide-C . Bike is pushing 25 years old so not sure what parts availability will be like.
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Old 04-14-19, 02:22 PM
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@brs485932's album/gallery:

https://www.bikeforums.net/g/user/497585
https://www.bikeforums.net/g/album/13507937

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Old 04-14-19, 02:29 PM
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Take the lock ring off and the cassette ill slide off. The freehub body is removed with a 10mm allen wrench.
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Old 04-14-19, 02:30 PM
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Ok, you definitely have a 7-speed Shimano cassette.

You'll need a Shimano compatible cassette tool.

For example Park FR5 or FR5.2
https://www.parktool.com/product/cas...ring-tool-fr-5
https://www.parktool.com/product/cas...ng-tool-fr-5-2

Also a chain whip.
https://www.parktool.com/product/cha...rench-hcw-16-3

There are quite a few different ones available, and you don't have to stick to any one brand. Use E-Bay or Amazon if you're on a budget.

Add a photo of the actual hub (and any markings on the middle of the hub) to help identify the model of the hub, and the freehub.

It may not be Shimano.

Even if it is Shimano, there are a couple of different 7-speed freehub designs.
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Old 04-14-19, 05:25 PM
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If your bike shop doesn't have one you can get it here.
https://www.amazon.com/Shimano-Freeh.../dp/B000F5HXLY
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Old 04-14-19, 09:29 PM
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Really appreciate all the help! Ordered the whip and the removal tool and will get some pics up once its off... sounds like there is hope for this yet.

Thanks!
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Old 04-15-19, 05:27 PM
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While you're waiting for the tools to arrive take off the rear wheel & put it between a couple sawhorses. Spray the whole hub down with penetrating oil. Put a bowl underneath to catch drips. Makes it much easier to disassemble. Oh yeah, get some work gloves too. Rear cogs are nasty business.
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Old 04-18-19, 12:35 PM
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Tools are here but not having much luck getting the lock ring off. Tried as described with a adjustable wrench with no luck... went plan B and tried a weaker air impact (maybe 150 - 200 or so ft-lbs) on it... still no luck.

before I break out a bigger impact or drop this tool in a vice is there anything else I should try? I did just give it a shot of PB Blaster to see if that helps out. This is standard thread correct? counter clockwise to remove.
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Old 04-18-19, 04:39 PM
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Originally Posted by brs485932 View Post
before I break out a bigger impact or drop this tool in a vice is there anything else I should try? I did just give it a shot of PB Blaster to see if that helps out. This is standard thread correct? counter clockwise to remove.
Standard thread direction. See the little arrow next to the word "LOCK"? Go the other direction to unlock. A quick hit on the wrench with a mallet might help. It has a "toothed" interface like serrated washers that clicks when tightened.
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Old 04-18-19, 06:12 PM
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Success! Thanks!! I Was a little worried when it started to make that click noise and though I broke something but it did come off with some major effort lol


so the "cone" you unscrew over the bearings is very small and looks to have a metal part still attached to the wheel sorta over the top of the bearings. is this some odd type of cone? Much different than the videos I have watched. I was able to get the bearings out but sorta have to fish them out between the metal cone and the cup on the hub.


How do I figure out what type of free hub I need to buy? pulled the free hub off the rim with a 10mm allen wrench but cant find any numbers or anything on it. The the hub where the axle goes through does say FH-RM40.
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Old 04-18-19, 06:52 PM
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Glad it is coming apart.

Post some new photos to your Album above, or get those last 3 posts so you can start posting your own photos.

FH-RM40 is the Shimano model number.

There is an 8-speed freehub widely available. But, it is about 5mm wider than the 7 speed freehub, and will take some tinkering to get it to fit on your bike. Probably moving spacers around and redishing the wheel. But, it is good to give you 8/9/10 (almost modern), but generally future proofing your bike.

Plus an extra spacer for the 7 speed cassette.

I presume the RM30/RM33 freehubs are WRONG

The freehub linked to by @davidad is probably right, but shows out of stock. And, can be a pain to source.

Ahhh... I think this is your freehub.

https://www.bikebling.com/Shimano-ST...pd-freehub.htm

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Old 04-18-19, 07:50 PM
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Originally Posted by brs485932 View Post
Success! Thanks!! I Was a little worried when it started to make that click noise and though I broke something but it did come off with some major effort lol


so the "cone" you unscrew over the bearings is very small and looks to have a metal part still attached to the wheel sorta over the top of the bearings. is this some odd type of cone? Much different than the videos I have watched. I was able to get the bearings out but sorta have to fish them out between the metal cone and the cup on the hub.


How do I figure out what type of free hub I need to buy? pulled the free hub off the rim with a 10mm allen wrench but cant find any numbers or anything on it. The the hub where the axle goes through does say FH-RM40.
Now that you have the freehub body off why not try to ressurect it. It could be soaked in a pickle jar of mineral spirits and spun to break up the dried grease. With some spinning and more soaking itís proper operation would most likely return. You could then drip in some heavyweight oil like Phil Tenacious Oil or Pedroís SynLube. If you want to be even more ambitious you can even do a tear down on the freehub where you remove the bearing cup by loosening clockwise (reverse thread I believe) with the correct tool. There are some Chinese vendors marketing a freehub disassembly tool on eBay for less than $10 BTW.
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Old 04-18-19, 09:52 PM
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http://www.sjscycles.com/Drawings/Sh...R_Tech_Doc.pdf

http://www.rennrad-news.de/forum/att...ty-pdf.283074/


https://si.shimano.com/pdfs/ev/EV-FH-RM40-8-1935.pdf
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Old 04-19-19, 03:33 AM
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The last link is 8-speed.

As mentioned, it may work, but will probably require a cassette spacer for the 7-speed cassette, as well as changing around the axle spacers a bit. Also redishing the wheel.
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Old 04-19-19, 07:34 AM
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Yep, in case he can't find the 7 speed part, he knows what the 8 speed number is.

The 7 speed also shows 2 OLD distances and the 8 just in 135mm. We don't know what the OP rear spacing is.
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Old 04-19-19, 08:23 AM
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Originally Posted by CliffordK View Post
Ok, you definitely have a 7-speed Shimano cassette.

...

Add a photo of the actual hub (and any markings on the middle of the hub) to help identify the model of the hub, and the freehub.

It may not be Shimano.

Even if it is Shimano, there are a couple of different 7-speed freehub designs.
FWIW, the hub was supposed to be a Shimano Acera, with the Hyperglide HG-30 seven speed cassette.
https://waterfordbikes.com/SchwinnCa...0/1995_03.html
But it is what it actually is. I'm not sure what Shimano model number the Acera 7 speed hub was.

If you can figure out which model is needed you can replace the freehub body, or refurb it if its not toast. There's a video on refurbishing on you-tube. Seems reasonable (except that I recommend disassembling bearing races with the hub and your hands in a two-gallon plastic bag, or over an aluminum pie pan on top of a towel - the point being you don't want to lose any bearings).


Last edited by WizardOfBoz; 04-19-19 at 08:27 AM.
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Old 04-19-19, 05:55 PM
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Thanks Everyone! Seems these 7 speed hubs are not to popular anymore... drove about 60 miles today for kicks to see if a bike shop might have one and no luck. Feels so weird to hear everyone talk about how "old" and "vintage" this bike is LOL!! Still vividly remember purchasing it new and didn't FEEL like that long ago but I guess doing the math I was 12 at the time LOL.

Talked to the folks at Bike Bling and ordered the hub linked above.... they also thought it should work and said it can be returned if it does not.

This will be the 3rd free hub that has been on this bike.... so the one I took off yesterday was not original - it was replaced the first time when the bike was maybe 2 years old by the shop.


New Pedals, New Tires, New Helmet, New Free Hub, New bag of various ball bearings.... getting excited to give this thing a test run once all put back together!
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Old 04-19-19, 08:31 PM
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Thanks for the info on the rebuild - watched the videos and such and believe I will try to save the existing free hub as well to have for a spare.

I added some pictures to my album of the axle and odd "cone" / dust cover or whatever you want to call it There is some type of cover or spacer in the free hub as well where you can see one ball bearing under it.. is this an older setup? guessing that metal ring is pressed in? any tips to remove without damage?
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Old 04-19-19, 09:03 PM
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Originally Posted by brs485932 View Post
Thanks for the info on the rebuild - watched the videos and such and believe I will try to save the existing free hub as well to have for a spare.

I added some pictures to my album of the axle and odd "cone" / dust cover or whatever you want to call it There is some type of cover or spacer in the free hub as well where you can see one ball bearing under it.. is this an older setup? guessing that metal ring is pressed in? any tips to remove without damage?
1) De nada. Good luck!
2) Great idea: have a good hub you can ride before tearing apart the old hub as a spare.
3) Need picture of the cover. Whatever you do, be gentle and use tools that aren't too sharp. Easy to pierce a dust-cover, and likely impssible to get a new one.
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Old 04-21-19, 11:55 AM
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Thank - Here are a pic of the covers - I was able to fish the bearings out around both but will not be ideal trying to put it back together. Any tips for removal with out damage would be much appreciated.




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Old 04-21-19, 12:04 PM
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It looks like you're doing well, once the new freehub comes in.

I usually don't remove the dust caps, unless it is necessary. I just stuff a rag in and spin the wheel around the rag. Sometimes push the rag through the middle of the hub with a screw driver or old spoke.

Check the cones carefully for pitting. If the bearings look pristine, you can re-use them. If you see signs of discoloration, bumps, whatever on the bearings, differences from right to left, then dump them all and replace. To clean bearings, just fold a rag over them and roll.

I've been using Phil Wood grease for some time. I'm thinking about trying some auto grease again.

The grease will hold your bearings in place while reassembling.
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Old 04-24-19, 08:51 PM
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Freehub showed up today and everything fit as it should! Tomorrow I will get the bearings and axle back in it and hopefully have some extra time to go out for a ride.


Thanks Everyone!
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