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Tech Talk: How to Replace the Cassette (SRAM / Shimano)

January 27th, 2015 by in Everything, Tech Info

Well we are starting to come into the season where we need to think about what is needed to be done on the bikes, prior to the riding season.  This maintenance should be done sooner rather than later to ensure you don’t miss a ride due to a broken bike.

 

You will need the below tools to perform the removal.  If you dont want to buy them, ask someone you know very nicely, and offer them beer…. that always works!

Cassette Lock Ring Remover

40-1875-NCL-TOP

 

Chain Whip

Park-Tool-SR-1-Chain-Whip

 

 

Below is a brief overview on what steps are required to remove and reassemble a cassette.  I’ll try and do a bunch of different ones as I personally work on my bike, just to help out.  I think there is still a plan to have a day, or evening to have some folks over to do a full rebuild.  Keep an eye out on that for sure!

 

Step 1:  Locate the Cassette:  I know, everyone knows what a Cassette is, but the below picture should help.

IMG_20150124_110835

 

Step 2:  Remove the quick release skewer from the rear wheel.  This needs to be removed prior to step 3, or step 3 wont happen….  Hence step 3 is after step 2.

IMG_20150124_110903

 

Step 3.  You will need to use 2 special tools for this.  One is a Chain Whip.  This tool wraps around the cassette locking it in place so you can loosen the lock nut on the cassette.  The other tool needed is the Cassette Lock ring Tool.  Both can be purchased from any Local Bike Shop.   The thread on the lock ring is a normal thread so, righty tighty lefty loosy.  Once you loosen the lockring off you can go to step 4.

IMG_20150124_111019

 

 

Step 4:  Once the lock ring is removed you can pull the cassette off.  Just grab the cassette from behind the biggest ring and pull straight off.  You will not need to twist of anything, just pull.

IMG_20150124_111101

 

 

Step 5:  Inspect the freehub body to ensure there is no damage and that the freehub body spins freely… well as freely as possible.  When inspecting the freehub body, you will notice that one of the splines is narrower than the rest.  This will come in handy when putting the cassette back onto the freehub.

IMG_20150124_111239

 

 

Step 6:  Slide the cassette onto the freehub body.  Align the cassette spline with the freehub spline.  Push the cassette until it wont go any further.  The last piece is the lock ring.  When put together, it should look like the photo below.

IMG_20150124_112042

 

 

Step 7:  Tighten the lock ring using the lock ring tool.  The recommended torque value is typically on the lock ring.  The value should be 260 inch pound of torque at a minimum.

IMG_20150124_112110

 

 

 

Once Torqued down you are good to go.  Put the skewer back in the hub on the bike and start to ride!

 

Hope this helps