Maintenance & Technical > KX500 Original
Bad crank seal after only four rides.
dave916:
dont forget check for side play on crank before you strip engine
try move with big flat screwdriver between crank and cases
Purpletj:
--- Quote from: dave916 on May 25, 2010, 11:41:01 PM ---dont forget check for side play on crank before you strip engine
try move with big flat screwdriver between crank and cases
--- End quote ---
ok. i have found slop in the crank, whats the fix? crank rebuild with new bearings?
dave916:
if your bearings stay on crankshaft when seprating the cases it is the cases, if the bearing stay in cases you may want to check your crank for wear
, $461 for a new set of cases is problably your best bet, will also need to buy new crankbearings as your new ones could be sightly worn if they spun in cases,
also u will probably need a few of your gearbox bearings that could be hard to change ie;clutch arm bearings
maybe a good machine shop could repair ur old cases ,
someone on here could probably recommended where to get it done,[ not sure how good a job it is]
Purpletj:
When I had the engine apart the first time a replaced several bearings for peace of mind. I didn't however replace the crank bearing cause the were in excellent condition. I do remember the bearings staying on the crank when I split the cases. Dang I really didn't want to buy new cases.
Roostmad1:
--- Quote from: Purpletj on May 26, 2010, 05:10:17 AM ---
--- Quote from: dave916 on May 25, 2010, 11:41:01 PM ---dont forget check for side play on crank before you strip engine
try move with big flat screwdriver between crank and cases
--- End quote ---
ok. i have found slop in the crank, whats the fix? crank rebuild with new bearings?
--- End quote ---
if the crank is moving side to side its not worn cases but a worn crank,its worn where it runs on the main bearings,had the same problem when i got my KX250,unless the cases are worn out where the main bearings go,but all i did was put a hot rods crank in it and now its all tight,goodluck
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