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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Case Splitting newbie
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[QUOTE="blackoutyz125, post: 807477, member: 55323"] I have an 89 yz125 and I had to split the case replace my crank berings, it was a total pain in the ass. I did most of the work my self, but some things you need a mechanic to do unless you have all the specific tools. When the case was apart i replaced, all bearings, oils seals, connecting rod. Also you need to factor into the cost for crank truing and rebuild, complete gasket set and labor costs. Removed the motor, removed the top end/piston, took off the flywheel/ignition, clutch, kickstart gear, primary drive gear, external shift mechanism. Then I took the case to a repair shop and had them split the case and install the new bearings and oil seals, go through the tranny, and reassemble the case. The reason I had a shop do this is: 1. Special tools are needed to split the case, and you can cause some serious damage by trying to do it the wrong way 2. You need a shop press to install bearings 3. I dont know jack sh!t about trannys so I figured to just leave that alone 4. You need more special tools to reassemble the case The shop time for the case spliting, tranny work, bearing/oil seal instalation, con rod install, crank true, [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Case Splitting newbie
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