3rd 4th chattering
#1
3rd 4th chattering
Finally found the time to get out on the bike after doing the tranny swap. Seem to have an issue with 3rd and 4th gear.When I shift up to 3rd gear and again upto 4th gear Im getting a a chattering noise once I shift into 5th gear noise is gone. If I shift down from 5th into 4th I get it again and sounds worse going down into 3rd and down into 2nd and 1st is fine. If I don't roll on the throttle in 3rd or 4th I dont get the chatter but as soon as I give a bit of throttle I get it. If I pull clutch in chatter is gone. So I know it has to do with gearbox with 3rd and 4th gear. When I pulled the tranny a few years back it was fine and I had just given it a full rebuild with new parts not including the gears and shafts but everything else was replaced. I'm thinking problem could be in the shifter drum orthe shifter forks.
Before I start digging into tranny again I'd like a few thoughts on what to look for?
Before I start digging into tranny again I'd like a few thoughts on what to look for?
#2
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from the trap door to the clutch it goes 4th 1st 3rd 2nd 5th
and the forks shift 1st-2nd, 3rd-5th and 4th is by itself
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if the drum has alot of wear or the forks are bent
does the noise sound like gears not meshing properly or does it chatter like the gear dogs are slapping against each other
another thing that can cause the gear dogs to chatter is a bad clutch but im still leaning towards bad 3rd and 4th main gears or bad bearings under 3rd and 4th
if i had it sitting in front of me i could give you a better answer
does the noise sound like gears not meshing properly or does it chatter like the gear dogs are slapping against each other
another thing that can cause the gear dogs to chatter is a bad clutch but im still leaning towards bad 3rd and 4th main gears or bad bearings under 3rd and 4th
if i had it sitting in front of me i could give you a better answer
#7
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#8
I pulled the forks out and just eye balling them they don't look bent but how can you actually tell if there bent, I lay them each on a sheet of glass on there forks as there not flat all the way to where shaft goes through and they each seem flat, only one is flat to the shaft hole and that one seems flat as well. Should there be any rocking movement at all in the gears ?First gear on countershaft seems to rock a bit , hard to tell on 4th and third as there tucked tight to each end of the shaft.
Couple thoughts that I think would be fair to share, on my mainshaft between the 2nd gear and fifth gear ( the gear that is pressed in place in the case) there are 2 orings on the mainshaft and I have never really thought they were a bad thing, thought maybe it was just an old trick someone used for what ever reason and I just put them back on when I rebuilt it.
Second thought , many times if I was working on the tranny and the forks and shaft were out I would lock the gears together engaging the countershaft and mainshaft gear dogs and use this lock to tighten up the primary side nuts and pulley nut, is this a bad thing? Hard on the mainshaft and countershaft gear bearings etc?
You can see where the end of screw driver is pointing to gear dog where its shiney.
Couple thoughts that I think would be fair to share, on my mainshaft between the 2nd gear and fifth gear ( the gear that is pressed in place in the case) there are 2 orings on the mainshaft and I have never really thought they were a bad thing, thought maybe it was just an old trick someone used for what ever reason and I just put them back on when I rebuilt it.
Second thought , many times if I was working on the tranny and the forks and shaft were out I would lock the gears together engaging the countershaft and mainshaft gear dogs and use this lock to tighten up the primary side nuts and pulley nut, is this a bad thing? Hard on the mainshaft and countershaft gear bearings etc?
You can see where the end of screw driver is pointing to gear dog where its shiney.
#10