Clutch basket hitting the inside of the clutch cover?
Posted: 10:30 pm May 13 2022
I've been having a problem with my 1999 KDX 200 that has left me scratching my head and wanting to put a wrench through the wall.
I opened up the clutch side of the bike after I saw an excessive amount of aluminum in the oil. It appears that the bolts that the clutch spring holder (13091A) came loose and caused the assembly to hit the clutch cover. I took the clutch out, cleaned up the new grooves made into the clutch cover, put it back on, and cycled a ton of old diesel 15W-40 (I know, probably not great, but didn't want to waste new oil) to flush the aluminum out of it.
After I cleaned the transmission out best I could, I reassembled the clutch. I put the first shim washer onto the shaft (shim washer thickness was .090"), then the assembled basket (8 clutch plates, 7 steel plates), then the rest of the components in order as shown in the manual. spring bolts torqued to 72 in-lb, center nut torqued to 65 ft-lbs, made sure both shim washers and the conical washer were in the correct location and orientation.
After assembling everything and starting the bike up, I couldn't get the clutch to disengage (as in, clutch always pulled in, can't get the bike to move). Also, the clutch basket tips started making contact with the clutch cover and wore a groove into the clutch cover causing more aluminum flakes (ugh). It almost made me think that the shim washer behind the basket (the one that goes against the bearing inside the case) is too thick and pushing the basket out causing the contact. On the plus side i guess, I could tell that there was not any contact on the 4 inner bolts that holds on 13091A.
Obviously something is wrong but I am really baffled by the the fact that the basket is now hitting the case. If anyone has any insight into how and why this is happening I would appreciate some feedback. I want to fix it right and most likely look into a bottom end rebuild but I want to figure out the why and how's before I rebuild it all and run into the same issue.
Additional information: I run a quart of 15W-40 or 10W-40 for transmission oil and my clutch springs are on the low side of the spec. I plan on replacing them, but I cant imagine that them being a half .mm out of spec would cause it to interfere with the clutch cover somehow.
I opened up the clutch side of the bike after I saw an excessive amount of aluminum in the oil. It appears that the bolts that the clutch spring holder (13091A) came loose and caused the assembly to hit the clutch cover. I took the clutch out, cleaned up the new grooves made into the clutch cover, put it back on, and cycled a ton of old diesel 15W-40 (I know, probably not great, but didn't want to waste new oil) to flush the aluminum out of it.
After I cleaned the transmission out best I could, I reassembled the clutch. I put the first shim washer onto the shaft (shim washer thickness was .090"), then the assembled basket (8 clutch plates, 7 steel plates), then the rest of the components in order as shown in the manual. spring bolts torqued to 72 in-lb, center nut torqued to 65 ft-lbs, made sure both shim washers and the conical washer were in the correct location and orientation.
After assembling everything and starting the bike up, I couldn't get the clutch to disengage (as in, clutch always pulled in, can't get the bike to move). Also, the clutch basket tips started making contact with the clutch cover and wore a groove into the clutch cover causing more aluminum flakes (ugh). It almost made me think that the shim washer behind the basket (the one that goes against the bearing inside the case) is too thick and pushing the basket out causing the contact. On the plus side i guess, I could tell that there was not any contact on the 4 inner bolts that holds on 13091A.
Obviously something is wrong but I am really baffled by the the fact that the basket is now hitting the case. If anyone has any insight into how and why this is happening I would appreciate some feedback. I want to fix it right and most likely look into a bottom end rebuild but I want to figure out the why and how's before I rebuild it all and run into the same issue.
Additional information: I run a quart of 15W-40 or 10W-40 for transmission oil and my clutch springs are on the low side of the spec. I plan on replacing them, but I cant imagine that them being a half .mm out of spec would cause it to interfere with the clutch cover somehow.