The gear change between 2nd, 3rd and 4th became significantly poor, feeling very notchy and making a noticeable clicking sound.
My immediate thought was something amiss with the linkages/bearings and not the gearbox.
The easiest one to check first is the lever bearing/bush as shown in the attached image I copied from the bay (just need to remove the gear lever gaiter and rubber cover) I had a mental image of part of the bush broken up however with the rubber cover removed I could see what the problem was....covered with what I can only describe as a hardened black gunk, sorry for lack of a pic.
I used gt85 silicone to liberally spray the bearing and cotton buds to remove all the gunk, moving the lever into different gears to facilitate cleaning. Immediately the gear change felt much better.
I then used silicone grease to fully lubricate the bearing.
On testing the gear change is now really slick, I cannot believe the difference it has made, it's even made selection of 1st and 2nd really smooth!
I can highly recommend doing this if your change is recalcitrant and recommend even if it isn't!
If you do have a go at this do not use vaseline as the petroleum will attack the nylon bearing. Do not use graphite or molybdenum based lubricant as these attack plastics. Mineral oils/grease are fine with nylon, silicone grease has an excellent temp range between -90 to 450 and good in load bearing situations.
My immediate thought was something amiss with the linkages/bearings and not the gearbox.
The easiest one to check first is the lever bearing/bush as shown in the attached image I copied from the bay (just need to remove the gear lever gaiter and rubber cover) I had a mental image of part of the bush broken up however with the rubber cover removed I could see what the problem was....covered with what I can only describe as a hardened black gunk, sorry for lack of a pic.
I used gt85 silicone to liberally spray the bearing and cotton buds to remove all the gunk, moving the lever into different gears to facilitate cleaning. Immediately the gear change felt much better.
I then used silicone grease to fully lubricate the bearing.
On testing the gear change is now really slick, I cannot believe the difference it has made, it's even made selection of 1st and 2nd really smooth!
I can highly recommend doing this if your change is recalcitrant and recommend even if it isn't!
If you do have a go at this do not use vaseline as the petroleum will attack the nylon bearing. Do not use graphite or molybdenum based lubricant as these attack plastics. Mineral oils/grease are fine with nylon, silicone grease has an excellent temp range between -90 to 450 and good in load bearing situations.
