I want a tech manual for Bicycle Cassette repair or replace Do you have such a manual?

a xx1 cassette is removed in exactly the same way as a normal cassette

Hold off the torch action for now.

Get a clue before you destroy something. The cassette is a single piece on purpose.

Use a search engine and read up on some things:
"bicycle cassette removal"
"bicycle chain skipping"
"how to (whatever)"

A good start for procedures:
http://www.parktool.com/blog/repair-help

Perhaps you have a tight link. Is it always the same place on the chain. Can you duplicate the problem in a static setting, say, with the bike suspended so you can 'pedal' it and observe what is happening at the rear?

http://www.parktool.com/blog/repair-help/tight-link-repair-ct-3-ct-5-ct-6-ct-7

or the B-screw adjustment could be such that the upper pulley is touching the cassette.

Or the RD may be bent out of alignment with the cassette.

Damaged/worn teeth on the cassette?

http://www.sheldonbrown.com/derailer-adjustment.html

See "Skipping/Autoshifting"

Frame flex/cable stiction?

If you mean the noise while coasting, cassettes don't make that ratcheting noise. The pawls in the hub/cassette body do. Changing the cassette will not change the sound.

http://www.rolwheels.com/rol_volant_wheels.php

http://www.rolwheels.com/contact_us.php

http://www.parktool.com/blog/repair-help/cassette-and-freewheel-removal

Google bicycle shifting technique, for example:

http://coachlevi.com/cycling/complete-beginner-guide-to-bicycle-gears-shifting/

The basics of shifting are these:

1) The big ring and right side of the cassette in back are for speed.

2) The small ring and the left side of the cassette are for high torque, lower speed

3) The middle ring works with all rear cogs.

Avoid crossing left front to right rear and vice-cersa. It cause excess side loads on the chain.

Bike shop, eBay, Performance Bicycle catalog? Look for a 26-inch MTB wheel with a Shimano 7-speed cassette body on it. If that makes no sense, take it to a bike shop and get it right the first time. They'll also have the special tools to transfer your gears to the new wheel.

Wanna see what's involved?

http://www.parktool.com/blog/repair-help/categories/cassette-and-freewheel-service

You need a bicycle-specific chain wrench to hold the cassette stationary (for when you reinstall it) and a cssette wrenc to loosen and tighten the lockring on the cassette. You can pick up both of these tools at any bicycle shop. Info on how to perform the work once you have the tools can be found at parktool.com/repair/.

Hope this helps,
matt

You need two tools: a cassette wrench or socket (it's a splined socket that fits into the cassette through the axle)and a chain whip wrench. You use the chain whip by wrapping it around one of the cogs of the cassette to immobilize it and then loosen the lock nut of the cassette with the cassette wrench. It is just like a screw or bolt. The Cassette needs to be lined up with the splines on the freehub. Find the thin spline and use it as your "key" because it is the only one that width. Then drop the new cassette on to the freehub and re-torque the cassette's lock ring. If the cassette is disassembled rather than one piece, from the largest cog first on the bottom, alternate between cogs and spacers until you are out of spacers. The smallest cogs have these cast in. As you take the old one off, the installation technique is the same in reverse.

Regards,
matt

Any good bicycle repair shop in your area should be able to sell you a new wheel. Make sure you take the old one with you and they can switch the cassette over for you for a small fee. It requires a special tool to remove. After that its simple to replace the tire and tube.