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Brent is local to me and brought both his rear and front IFS 3rds to me for a re-gear. Shown here is the rear 3rd and all the right stuff to do it right. At the end of this page should be a link to the front IFS 7.5" install. |
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The electric impact makes quick work of the teardown. |
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After the 3rd is cleaned up a little, new races are tapped in place. |
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This 4 cylinder 3rd is getting an Aussie. |
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Very simple and relatively easy to put together. |
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First, tap the pin out....this is the only direction it will come out. |
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The only items to be re-used from the guts is the thrust washers. Both measured .068" thick for me. |
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I partially assembled it and checked the clearances. I measured all 4 spots and they varied from 014 to 019 but they were still in spec. |
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The driver coupler would not quite slip in.... |
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The solution is to use a rat-tail file to fle off the burrs... |
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Place the 4 pins in place and install the couplers. |
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A screwdriver is used to hold the couplers apart. |
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The springs are worked in place like this and then slipped over the nipple. |
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Now just install the power pin and tap the roll pin in place. |
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The surfaces I files to remove high spots. |
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I favor the red stuff....hi-strength applications. |
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75 ft/lbs. |
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The new carrier bearings can be pressed on or tapped on. |
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The pinion bearing/079 shim is pressed on with my humble 10 ton Harbor freight press. |
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This torque wrench can be found in a few bicycle shops. A must have tool for checking pinion pre-load. Just google "park tw-1" |
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My tool for tightening the carrier bearing to "acceptable levels". |
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Paint 3 or 4 teeth, add some pinion drag with a rag and turn the ring with a 17mm wrench back and forth twice...this method will give a very easy to read load bearing pattern. |
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Perhaps a few thou deep. |
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Coast agrees |
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I could use my good ole clam style bearing puller but this one works well also. |
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Assembly is not very time consuming. Sure is pretty... |
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My electric impact is a little slower when used for this application but it gets it done. The 079 shim is now replaced with a 075 shim. |
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The anti-sieze is a little messy and gets on everything but it prevents thread damage. |
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Much better. |
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good |
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75 ft/pounds |
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120 inch/pounds |
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Red loctite and dent the nut...done. :) |
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