dje67
Well-Known Member
It Aint the Gearbox
Took the gearbox off last night, which was fairly straightforward as the Bene 36cc has a lovely big access hatch directly onto the gearbox and rear of the engine. Separating the prop shaft from the box took nearly half the time to do the whole job - why do they use hex-head bolts!!???
I found that the gearbox looks fine and the oil was slightly discoloured and the selector mechanism, when removed, didn't look worn. It was very stiff, though, and when moving it by hand it didn't want to "spring out" at the end of travel positions. I cleaned it up and lubed it and it works freely now. Once it has been refitted and aligned properly, that should prevent any wear.
Gearbox splines show no sign of wear at all.
The main problem was, as I began to suspect a couple of days back, that rubber coupling between the gearbox and the flywheel has separated. The "female" plate that the gearbox spline locates into is completely detached from the flywheel itself and there were bits of rubber shredded inside the housing.
Next job is to remove the flywheel cover. This, unfortunately, shares the same mounting bolts as the engine mounts, so I'll need to somehow support the rear of the engine whilst the cover plate and mounts are removed. Hopefully I can then get the damper off and replace it.
Wee video attached.
http://s553.beta.photobucket.com/user/dje67/media/GearboxRemoved_zps72725509.mp4.html
Thanks to everyone for your help.
Took the gearbox off last night, which was fairly straightforward as the Bene 36cc has a lovely big access hatch directly onto the gearbox and rear of the engine. Separating the prop shaft from the box took nearly half the time to do the whole job - why do they use hex-head bolts!!???
I found that the gearbox looks fine and the oil was slightly discoloured and the selector mechanism, when removed, didn't look worn. It was very stiff, though, and when moving it by hand it didn't want to "spring out" at the end of travel positions. I cleaned it up and lubed it and it works freely now. Once it has been refitted and aligned properly, that should prevent any wear.
Gearbox splines show no sign of wear at all.
The main problem was, as I began to suspect a couple of days back, that rubber coupling between the gearbox and the flywheel has separated. The "female" plate that the gearbox spline locates into is completely detached from the flywheel itself and there were bits of rubber shredded inside the housing.
Next job is to remove the flywheel cover. This, unfortunately, shares the same mounting bolts as the engine mounts, so I'll need to somehow support the rear of the engine whilst the cover plate and mounts are removed. Hopefully I can then get the damper off and replace it.
Wee video attached.
http://s553.beta.photobucket.com/user/dje67/media/GearboxRemoved_zps72725509.mp4.html
Thanks to everyone for your help.
