Rear axle disassembly
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Rear axle disassembly
Hi, I think this is a pretty basic question. Having trouble pulling out the rear axle to service wheel bearings. Here's a short video showing the issue. Any advice would be appreciated, thanks!
https://photos.app.goo.gl/pneeVGgq998ZeTRj7
https://photos.app.goo.gl/pneeVGgq998ZeTRj7
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Yup, that's a Suntour freewheel body. You'll need a two or preferably four prong tool and a big wrench or bench vice. You might want to reassemble the axle so you can insert a QR skewer to hold the freewheel tool under torque.
Standard thread - turn it counterclockwise to remove.
Standard thread - turn it counterclockwise to remove.
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the thing retaining the axle in the hub is a simple metal dust cover.. tap on the non-drive end of the axle with a soft hammer.clean and re-grease the bearing areas on both sides of the hub... Clean the Axle and cones, inspect for pittingon the load bearing surfaces... replace the cones if needed... .re-install the 9 1/4"ball bearings per side... then tap the axle back into the metal dust cover and hub from the drive side of the hub... put the cone and spacers/locknut back on the non-drive side... adjust to allow a very tiny amount of "play" in the axle ( the QR will TIGHTEN the axle adjustment a tiny bit!)... then put that old 4 notch freewheel back together.
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Yup, that's a Suntour freewheel body. You'll need a two or preferably four prong tool and a big wrench or bench vice. You might want to reassemble the axle so you can insert a QR skewer to hold the freewheel tool under torque.
Standard thread - turn it counterclockwise to remove.
Standard thread - turn it counterclockwise to remove.
SDHawk: At this point, it’s best to remove the palls and clamp the body in a vise on the flats. It’s called “destructive freewheel removal”. While the link is for a single speed freewheel, the idea is the same.

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Nope. The freewheel body won’t let the cones pass through. You can pound on the other end with Mjölnir and it wouldn’t budge.
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At this point that is not going to work. The freewheel body that has been removed stabilizes the tool for removal and without the body there the prongs are going to shear off. In my experience, the prongs shear off most of the time anyway but the problem is going be worse without the body in place.
SDHawk: At this point, it’s best to remove the palls and clamp the body in a vise on the flats. It’s called “destructive freewheel removal”. While the link is for a single speed freewheel, the idea is the same.

SDHawk: At this point, it’s best to remove the palls and clamp the body in a vise on the flats. It’s called “destructive freewheel removal”. While the link is for a single speed freewheel, the idea is the same.

But if you do clamp the pawls, use blocks of wood.
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Cones, lower locknut or dust cap or all three. The cone is wider than the spacer. The axle won’t come out with the freewheel body in place.
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Don't believe me? go try it yourself.
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Thanks for the info, folks. Quite a lively discussion; I guess it wasn't as simple as I thought, I'll admit to still being a bit confused. Will check out the links etc and come back with any questions.
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Yup, that's a Suntour freewheel body. You'll need a two or preferably four prong tool and a big wrench or bench vice. You might want to reassemble the axle so you can insert a QR skewer to hold the freewheel tool under torque.
Standard thread - turn it counterclockwise to remove.
Standard thread - turn it counterclockwise to remove.
I also saw the info about putting the freewheel back on, will try that.
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really? huh.. i just dug out three old 4 prong freewheels... Complete Axle Sets, including the cones(slightly smaller than the 17mm hex locknuts,btw) pass right through them as long as the dust covers aren't in place.... repeat.. THEY PASS RIGHT THROUGH.
Don't believe me? go try it yourself.
Don't believe me? go try it yourself.
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Do your bearing service through the 17mm hole in the dust cover, then tap it back together to reseat the cover. Read it again and look at an axle.
Last edited by Kontact; 03-25-23 at 08:44 AM.
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Hey, great video. 
If you no longer need or want the freewheel, you can remove the freewheel body still threaded to the hub using something like a pipe wrench or bench vise. Unlike the reverse threaded freewheel lock ring that you've already removed, the freewheel body is normal (right hand) threaded.
If you want to keep the freewheel and reuse it, the best thing to do is to use the correct freewheel removal tool. This should have been done to begin, before removing the lock ring.
I'm surprised the drive-side cone we can't see is too big for the opening of the freewheel body. Usually, cones are smaller. There may be another lock nut on the axle, outside the cone.

If you no longer need or want the freewheel, you can remove the freewheel body still threaded to the hub using something like a pipe wrench or bench vise. Unlike the reverse threaded freewheel lock ring that you've already removed, the freewheel body is normal (right hand) threaded.
If you want to keep the freewheel and reuse it, the best thing to do is to use the correct freewheel removal tool. This should have been done to begin, before removing the lock ring.
I'm surprised the drive-side cone we can't see is too big for the opening of the freewheel body. Usually, cones are smaller. There may be another lock nut on the axle, outside the cone.
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If you showed us the cone and hub dust cover that you've already removed from the non-drive side, we could better understand the reason the axle won't pull out from the drive-side.
This is a little bizarre. I'm reminded of some dust covers that fit snugly to cones and are stationary as the hub revolves. If this is the case, you could just tap the axle out from the non drive side.
This is a little bizarre. I'm reminded of some dust covers that fit snugly to cones and are stationary as the hub revolves. If this is the case, you could just tap the axle out from the non drive side.
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and also Measure some of the parts you're claiming Knowledge about.
i did.
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If you showed us the cone and hub dust cover that you've already removed from the non-drive side, we could better understand the reason the axle won't pull out from the drive-side.
This is a little bizarre. I'm reminded of some dust covers that fit snugly to cones and are stationary as the hub revolves. If this is the case, you could just tap the axle out from the non drive side.
This is a little bizarre. I'm reminded of some dust covers that fit snugly to cones and are stationary as the hub revolves. If this is the case, you could just tap the axle out from the non drive side.
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Thanks again for the replies. First, I DO want to keep using it.... I only took it apart to clean and degrease since I'm betting it hadn't been done for many years, if ever. Wheels were spinning ok, but I already did the front wheel and needed it for sure.
Good question. Wow I'm dumb, yes the outside had a dust cap that was so tight on the cone I thought it might be one-piece. So I bet the dust cap is preventing the axle from coming out. Here's the non-derive side:


So I probably COIULD tap the axle out. However, I don't see how that would allow me to access the bearings... seems like there wouldn't be enough room to clean well and put them back.
If I pop the freewheel etc back on and use the tool to remove the 4-promg thing, will the whole assembly come off so I can easily get to the bearings?
If you showed us the cone and hub dust cover that you've already removed from the non-drive side, we could better understand the reason the axle won't pull out from the drive-side.
This is a little bizarre. I'm reminded of some dust covers that fit snugly to cones and are stationary as the hub revolves. If this is the case, you could just tap the axle out from the non drive side.
This is a little bizarre. I'm reminded of some dust covers that fit snugly to cones and are stationary as the hub revolves. If this is the case, you could just tap the axle out from the non drive side.


So I probably COIULD tap the axle out. However, I don't see how that would allow me to access the bearings... seems like there wouldn't be enough room to clean well and put them back.
If I pop the freewheel etc back on and use the tool to remove the 4-promg thing, will the whole assembly come off so I can easily get to the bearings?
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Thanks again for the replies. First, I DO want to keep using it.... I only took it apart to clean and degrease since I'm betting it hadn't been done for many years, if ever. Wheels were spinning ok, but I already did the front wheel and needed it for sure.
Good question. Wow I'm dumb, yes the outside had a dust cap that was so tight on the cone I thought it might be one-piece. So I bet the dust cap is preventing the axle from coming out. Here's the non-derive side:


So I probably COIULD tap the axle out. However, I don't see how that would allow me to access the bearings... seems like there wouldn't be enough room to clean well and put them back.
If I pop the freewheel etc back on and use the tool to remove the 4-promg thing, will the whole assembly come off so I can easily get to the bearings?
Good question. Wow I'm dumb, yes the outside had a dust cap that was so tight on the cone I thought it might be one-piece. So I bet the dust cap is preventing the axle from coming out. Here's the non-derive side:


So I probably COIULD tap the axle out. However, I don't see how that would allow me to access the bearings... seems like there wouldn't be enough room to clean well and put them back.
If I pop the freewheel etc back on and use the tool to remove the 4-promg thing, will the whole assembly come off so I can easily get to the bearings?
you do own a Cone nut wrench, correct? this task can not be done properly without at least ONE Cone wrench, typically 15mm size for rear wheels, 13mm for front wheels...,and a 17mm Box end wrench helps too.
i'd think saving a few bucks by having a shop get that Freewheel loose would be the best route.
Last edited by maddog34; 03-24-23 at 04:26 PM.
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If it were me and I wanted to keep that freewheel, I would correctly reassemble it first with a little bit of grease on both races that will hold the bearings in place for reassembly.
Next time you do this (freewheel overhaul), it's fine to remove the lock ring while the freewheel is still threaded to the hub. BUT, use the correct freewheel removal tool to loosen the freewheel from the hub first, breaking that super tight, concrete-like bond.
You can then use the wheel itself to help you loosen the freewheel lock ring. Once the lock ring is loose, go back to the removal tool and remove the entire freewheel assembly without spilling a single bearing. Put the now independent freewheel on a towel for complete disassembly, so all those little bearings don't scatter all over the place. Ya dig?

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yes. Holding the special 4 prong removal socket in a large Bench Vise then using the Rim to turn the wheel is the preferred method.. and If there is a bike shop near you, i'd advise stopping in and having them remove that old freewheel... You CAN get a twisted paper towel in the Bearing area without removing the Freewheel.. i use an old dull screwdriver to move the towel around in there... i use a magnet to get all 9 balls out first, then add a bit of Penetrant to loosen the old grease, then begin by using my finger and a paper towel to extract as much old grease as possible... then tuckan inch or two of P. towel in and use the old screwdriver to move the towel around in the Bearing area... Repeat until clean....Get some grease on the end of your finger and smear it around in there... use a bit of grease on your finger the re-install each ball bearing, one at a time...make sure each is pressed into place right up against the previous one... Tap the axle and cone back into place... give it another Tap to make sure the dust cover is properly located and won't rub the bearings... re-install the opposite side's cone and locknut. Adjust for a TINY amount of end play.
you do own a Cone nut wrench, correct? this task can not be done properly without at least ONE Cone wrench, typically 15mm size for rear wheels, 13mm for front wheels...,and a 17mm Box end wrench helps too.
i'd think saving a few bucks by having a shop get that Freewheel loose would be the best route.
you do own a Cone nut wrench, correct? this task can not be done properly without at least ONE Cone wrench, typically 15mm size for rear wheels, 13mm for front wheels...,and a 17mm Box end wrench helps too.
i'd think saving a few bucks by having a shop get that Freewheel loose would be the best route.
So I figured why not try to pop out the axle as had also been suggested. Hey, it came out on the first moderate tap! It wasn't "easy" to access the bearings and clean the cup but it wasn't as tough as I thought either. I did almost exactly what you suggested above and it worked out well. I do have cone wrenches and a decent amount of tools that I'm slowly getting the hang of,
Happy to report that it's all cleaned, lubed, and spinning great! I did have a problem the first time.... it wasn't smooth at all.... I think the dust cap wasn't in straight or completely. So I pulled out the axle and hand-pressed it into the cup. 2nd try was the charm.
I still need to put the freewheel back on with those bearings, but I've done that before so I think it will be alright.
Of course.
If it were me and I wanted to keep that freewheel, I would correctly reassemble it first with a little bit of grease on both races that will hold the bearings in place for reassembly.
Next time you do this (freewheel overhaul), it's fine to remove the lock ring while the freewheel is still threaded to the hub. BUT, use the correct freewheel removal tool to loosen the freewheel from the hub first, breaking that super tight, concrete-like bond.
You can then use the wheel itself to help you loosen the freewheel lock ring. Once the lock ring is loose, go back to the removal tool and remove the entire freewheel assembly without spilling a single bearing. Put the now independent freewheel on a towel for complete disassembly, so all those little bearings don't scatter all over the place. Ya dig?
If it were me and I wanted to keep that freewheel, I would correctly reassemble it first with a little bit of grease on both races that will hold the bearings in place for reassembly.
Next time you do this (freewheel overhaul), it's fine to remove the lock ring while the freewheel is still threaded to the hub. BUT, use the correct freewheel removal tool to loosen the freewheel from the hub first, breaking that super tight, concrete-like bond.
You can then use the wheel itself to help you loosen the freewheel lock ring. Once the lock ring is loose, go back to the removal tool and remove the entire freewheel assembly without spilling a single bearing. Put the now independent freewheel on a towel for complete disassembly, so all those little bearings don't scatter all over the place. Ya dig?

Any thoughts on the best method for that also appreciated. For instance, it better to put the grease/bearings on the freewheel and then lower onto the hub? Or better to grease the bearings onto the hub and lower freewheel? Does that make sense, haha?