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5valve

triple clamp disassembly

11 posts in this topic

5valve,

Before you go through all the trouble of removing the clamp, cast parts don't anodize well. Unless you are doing it in black, the clamps will not come out like you are expecting. Cast parts have too many pores in them and don't anodize like a machined part. It might be a good idea to talk to the anodizing shop before taking everything apart.

Clay

That is good to know!!!!!!!!!!

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I am aware of anodizing not being good on cast alloy, so will give upper clamp a try, before stem removal, of course black.

Grayracer, I did use a press, but did not go. Why?

Funny me, didnt know about the wire clip being there and was forcing the stem out from the wrong side.

Luckily, I didnt exaggerate with force and now that i read the topic, can even see the thingy in there.

Presume, if using press correctly, no heating is necessary?

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I didnt use any heat on mine ,apart or back together.If your not in a hurry to go ride it like i was.You could put the stem in the freezer for an hour to shrink it down.

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Grayracer, I did use a press, but did not go. Why?

Funny me, didnt know about the wire clip being there and was forcing the stem out from the wrong side.

Luckily, I didnt exaggerate with force and now that i read the topic, can even see the thingy in there.

Presume, if using press correctly, no heating is necessary?

Heating/freezing will make things easier, but using a press, it's not required. The anti-seize I mentioned is pretty important.

Make sure to read and understand the whole of a set of intsructions like the one I wrote about stem pressing before "pressing onward".

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I am aware of anodizing not being good on cast alloy, so will give upper clamp a try, before stem removal, of course black.

Grayracer, I did use a press, but did not go. Why?

Funny me, didnt know about the wire clip being there and was forcing the stem out from the wrong side.

Luckily, I didnt exaggerate with force and now that i read the topic, can even see the thingy in there.

Presume, if using press correctly, no heating is necessary?

I like to use a piece of round steel with a hole in the middle of it that is larger than the stem diameter. You want to press only on the insides of the clamp. If you just chuck up the clamp in the press and start pressing, you will bend the clamp and the pressing force will not be centralized on the stem.

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Is that correct positioning?

pic1

Please note, it is a '99 model, maybe theres sth diffrent?

Someone said, to cut the area above the wire circlip because it keeps the stem in place, up and down movement. Dont like that idea much.

Seems like the press from the pic has problems pushing stem out this way.

I used just the right size tube under the clamp.

Still have option for hydraulic press, but if I f*** up with precedue, sth will go bye bye, due to hydraulic strenght.

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Your setup looks OK.

The wire ring prevents the stem from moving farther up, or to look at it from the standpoint of it being assembled on the bike, it prevents the lower clamp and bearing from moving down on the stem. Same thing.

It will not interfere with the stem being pushed out the bottom, but you must allow clearance in the inside diameter of the tube you use under the clamp for the stem and its ring to slide into it.

The clamp is bored the size of the stem all the way through, but then at the bottom a small step is cut in the bore at a slightly larger size to allow the wire ring to slide up inside where it is protected against being disengaged by anything. When the ring hits the bottom of this step, it can no longer be pressed any farther in. It will, however, push right back out.

The screw press shown will probably require a great deal of effort to do this job, and a hydraulic is much more suitable. Expect to put about a ton on the stem to break it free.

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Thanks, that relieves me of doubts, tube is correct diameter, few mm's bigger than the hole.

Took upper clamp for anodize today, he'll do it black, but expects more like graphite gray.

If it turns out satisfying, will do the lower also.

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Hydraulic press did it, no problem.

Sand blasted, anodized it, lower became really black, upper came out more grayish.

Suppose they are diffrent material.

Anyhow like the finished product.

upper

lower

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