Mc Tool
Cruisin' Guzzisti
After reading here some good info about re-shimming gearbox ( Peter Roper ) I had a go .
I stripped the box and replaced all the shaft bearings ( not the needle rollers inside the gear wheels ), clutch push rod seals/O-rings and oil seals and the selector ratchet pawl assy and spring, and followed the instructions for the re-shimming and cut the correct thickness gasket for the rear cover , all is good except that now downshifting is a bit hit and miss which I think is down to me needing to adjust the eccentric bolt and locknut at the rear of the box , but this box seems noisy to me , whilst riding at open road speed I can hear the gearbox wirring away and at idle in neutral it wirrs away until I disengage the clutch ( to be honest I cant remember what sort of oil I put in it, either mineral or synthetic gear oil ) I guess there are no nasty noises , I just expected it to be a bit quieter . I had a good look at all the gears and they seem to be in good condition .... no wear marks on teeth and they seemed reasonably tight on the shafts ( which is why I didn't replace the gear needle rollers ) . Are these gear boxes usually noisy and what is the best type/brand of oil for them? I have also replaced the bearing in the swing arm that supports the universal joint , and shifting ( apart from the downshifting which I know I have to attend to ) it seems a bit agricultural , but having never owned an old Guzzi before Im not sure if I am expecting to much .
I stripped the box and replaced all the shaft bearings ( not the needle rollers inside the gear wheels ), clutch push rod seals/O-rings and oil seals and the selector ratchet pawl assy and spring, and followed the instructions for the re-shimming and cut the correct thickness gasket for the rear cover , all is good except that now downshifting is a bit hit and miss which I think is down to me needing to adjust the eccentric bolt and locknut at the rear of the box , but this box seems noisy to me , whilst riding at open road speed I can hear the gearbox wirring away and at idle in neutral it wirrs away until I disengage the clutch ( to be honest I cant remember what sort of oil I put in it, either mineral or synthetic gear oil ) I guess there are no nasty noises , I just expected it to be a bit quieter . I had a good look at all the gears and they seem to be in good condition .... no wear marks on teeth and they seemed reasonably tight on the shafts ( which is why I didn't replace the gear needle rollers ) . Are these gear boxes usually noisy and what is the best type/brand of oil for them? I have also replaced the bearing in the swing arm that supports the universal joint , and shifting ( apart from the downshifting which I know I have to attend to ) it seems a bit agricultural , but having never owned an old Guzzi before Im not sure if I am expecting to much .