TwoBobRob
09-01-2013, 04:46 PM
Hi from the UK everyone, first time poster, long time lurker.....
I bought a 185s earlier in the year which has been restored (badly) by the previous owner. Amongst a bunch of other little problems I have an issue with the rear sprocket.
I've had a good search around the forum but I can't find the answers I need; what exactly are the bolts that hold the sprocket on, and how many bolts & nuts should be in the cush drive altogether?
Currently, there's what looks to be a hex headed bolt with a smaller (m6 thread) piece on the end which the flange that holds the outer dust shield fixes to. Now, these bolts are all rattling loose - should they be studs that sit tight all by themselves, interference fit? As it is, I have no way to tighten them fully as you can't get a spanner on the hex head on the back. Surely you don't pull the axle just to change a sprocket??
Secondly, the cush drive itself has four holes in it towards the outer edge near the sprocket teeth. There are no nuts & bolts in these holes to hold the cush drive together, the whole thing is being held by the four wobbly sprocket bolts. Now, as you tighten those four wobbly bolts (I've resorted to clamping the m6 section with vice grips) nothing seems to clamp together nicely and moreover, the whole deal is buckling inward stopping the dust cover flange from fitting on.
Doe anyone have any exploded views or photos that might help me? Obviously, I don't know what's supposed to be on there and the service manual doesn't refer to it specifically from what I can see.
My gut is telling me the drive flange is ruined and those four sprocket bolts should be firmly seated by splines or similar and there are nut & bolts missing from the cush drive so the forces are going all over the place.
Your thoughts please; Any help would be greatly appreciated.
Cheers
Rob. :)
I bought a 185s earlier in the year which has been restored (badly) by the previous owner. Amongst a bunch of other little problems I have an issue with the rear sprocket.
I've had a good search around the forum but I can't find the answers I need; what exactly are the bolts that hold the sprocket on, and how many bolts & nuts should be in the cush drive altogether?
Currently, there's what looks to be a hex headed bolt with a smaller (m6 thread) piece on the end which the flange that holds the outer dust shield fixes to. Now, these bolts are all rattling loose - should they be studs that sit tight all by themselves, interference fit? As it is, I have no way to tighten them fully as you can't get a spanner on the hex head on the back. Surely you don't pull the axle just to change a sprocket??
Secondly, the cush drive itself has four holes in it towards the outer edge near the sprocket teeth. There are no nuts & bolts in these holes to hold the cush drive together, the whole thing is being held by the four wobbly sprocket bolts. Now, as you tighten those four wobbly bolts (I've resorted to clamping the m6 section with vice grips) nothing seems to clamp together nicely and moreover, the whole deal is buckling inward stopping the dust cover flange from fitting on.
Doe anyone have any exploded views or photos that might help me? Obviously, I don't know what's supposed to be on there and the service manual doesn't refer to it specifically from what I can see.
My gut is telling me the drive flange is ruined and those four sprocket bolts should be firmly seated by splines or similar and there are nut & bolts missing from the cush drive so the forces are going all over the place.
Your thoughts please; Any help would be greatly appreciated.
Cheers
Rob. :)