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Re: upper/lower primary chain bearings Posted by CMyles [Email] (#1126) [Profile/Gallery] (more from CMyles) on Sun, 26 Nov 2006 13:08:44 In Reply to: upper/lower primary chain bearings, Paul Bob, Sun, 26 Nov 2006 12:40:50 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Paul Bob,
To pull the input shaft assembly (lower chainwheel shaft) you must remove the transaxle rear cover and the differential assembly (pull out the axles first) then you remove the lock plate at the end of the layshaft. Now remove the forward-most side cover. You'll see a sleeve on the front countergear that's got a snap ring in front of it. Spread the snap ring and move it forward and then slide the sleeve all the way forward. Now draw the layshaft back into the differential case to a point where the front counter gear drops out into your hand (don't let it fall out). There is a sleeve and rollers inside the front of the counter gear so don't let those fall out either. At this point you can remove the three bolts that secure the input assembly and pull it out of the case. These can be pretty tight sometimes, if so just screw the nut on the input shaft a few turns and using two long prybars under the rim of the nut pop it out (don't let it fall). Now get to a hydraulic press and you can replace the bearings in the assembly. My advice; Buy new SKF bearings and replace the old ones using the exact same shims which were in there. DON'T bother going through the re-shimming process on the input assembly. It's a lot of work and virtually always results in having the same shim thickness as original. Watch out for shims sticking to the old bearings and getting misplaced. Also, take a good look at the arbor on which the upper chainwheel sits. That could be worn down if the bearing has been locked up. Good luck
posted by 206.123.221...
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