Part II: Basic Bike Repairs in .NET

Generator Denso QR Bar Code in .NET Part II: Basic Bike Repairs

7 Holding the chain-whip tool in one hand and the adjustable wrench in the other (as shown in Figure 11-4), push down on the adjustable wrench You ll hear a clicking sound as the lockring loosens You may be able to get greater leverage by standing behind the wheel and leaning over the top as you push down on the wrench 8 After the lockring loosens, remove the nut or quick-release skewer 9 Unscrew the lockring by hand until you can remove it 10 Slide the cassette off the freehub Some of the first few cogs may not be attached to the cassette body (as shown in Figure 11-5) Keep track of any spacers that exist in between the cogs these should be returned to their proper position when you reinstall the cassette Figure 11-6 shows the free hub after the cassette is removed Notice the splines cut into the extended part of the hub

To remove a traditional cassette, follow these steps: 1 Remove the rear wheel from the bike (see 7) 2 Remove the quick-release skewer or axle nut 3 Stand the wheel up on the floor 4 Facing the cassette, attach the chain of one chain whip to the largest cog and hold the handle of the chain whip with your right hand at the two or three o clock position 5 Attach the chain of the other chain whip to the smallest cog and support the tool with your left hand in the nine or ten o clock position 6 Push down on the chain attached to the smallest cog while holding the other chain whip in place You may be able to get greater leverage by standing behind the wheel and leaning over the top as you push down on the chain whip 7 Remove the smallest cog after it s loose The others will slide off

Occasionally, you may decide to replace an individual cog because of wear or because you want to change its size After you ve removed your freewheel or cassette, you can follow these steps to remove individuals cogs: 1 Secure the freewheel or cassette in a vise (as shown in Figure 11-7) 2 Wrap the chain of a chain whip around the smallest cog 3 Turn the chain whip in a counterclockwise direction to remove the cog (as shown in Figure 11-8)

If you don t have a vise, you can use two chain whips together: 1 Wrap the chains of the chain whip around two adjacent cogs such that the handles of the tools cross You ll have more leverage if you keep the handles close together 2 Squeeze together the two chain whips until you loosen the cogs This procedure is shown in Figure 11-9 Whichever method you choose, as you remove the cogs keep track of any spacers (see Figure 11-10) between them You ll want to put these back in place in the proper order when your reinstall the freewheel

If the free-hub body s ratcheting mechanism gives out or if it s making noise, you may have to replace it or remove it for lubrication if you have a model that allows for this To remove the freehub body, follow these steps: 1 Remove the rear wheel from the bike (see 7) 2 Remove the cassette from the free hub (see Removing a cassette, earlier in this chapter) 3 Remove the lock nut and cone from the other side of wheel and pull the axle through 4 Remove the hub bearings Replace them if necessary 5 Use the proper size Allen wrench to unscrew the bolt in the center of the free-hub body and remove the free-hub body 6 Clean the body with a degreaser, apply oil, wipe off any excess lubrication, and reassemble using the reverse of this procedure