B1
 

hi i am now up and running after one of my b1s got stuck in forward gear as i was putting it back on trailer managed to buy good upper from this site . the guy who took my old drive apart could not get the bottom gear and clutch cone of the shaft in the upper drive however i had a look at it today couple hits with copper mallet bingo off came clutch a few more harder hits off came the lower gear . were it was stuck on the drive shaft a very thin ring of rough metal on the shaft and the gear where they got stuck or welded no hot spots oil in drive perfect no swarf on magnets no sign of overheat wotso ever. need a new cone clutch if anyone has one took one hit to many i will us this upper drive as a spare .more important why did this happen would going from forwad to backup without stopping at idle do this i had been out 2hours all fine 10 minute no wake zone to pontoon so everything would have been cool???? if anyone has read this to the end . sorry for the long story got caried away . Regards paul form England

I always stop at neutral before changing directions to allow the gears to release. from what I understand there is a brass ring pressed into the upper gears I assume to cushion the shift. Not sure if it is a replacable part or needs the whole gear replaced.

thanks fireboatpilot all the parts look as new just cone clutch damage done when i hit it it had some wear on it anyway so i just need to get hold of one regards Paul

Did the Clutch ever shutter when putting into fwd or reverse? If it did, the shift linkage on the motor is out of adjustment. If it does this in both directions, the cone is worn out. Since this thing stuck together, the cone is likely trashed and not worth keeping as a spare. Check the other surface in the gear for any metal transfer. Slight metal transfer will prevent the cone from seating properly. Also, check the shift fork where it engages the middle of the cone. That area can gall and will get progressively worse. I don't know of any replacement brass rings, believe they come as an assembly only with the gear. Brass ring rides on the shift fork ramp to provide axial load onto the fork to extract the cone out of the gear. This all needs to operate smoothly with the exception of the springs that pop the cone into the gear. Hope that helps.

hi rexx
 

thanks Rexx not had boat long but went into gear smoothly back and forward the brass ring are good just the cone clutch damage where i hit it to get it off not keeping cone clutch as spare keeping upper drive as a spare i recken it happend when i went from back to foward to fast normaly stop and let everything slow down in the box but was running up on to mudd and panicked cheers for the help regards paul from England

Ok, assume your idle is near 800 rpm?...high idle can kill the clutch cone. I know it can get exciting when beaching/docking. My rule is to be off the throttles always with slow engagements going fwd. I try to avoid using reverse unless winds/current say otherwise. My days of dock panicking are over...took me 6 years to be comfortable and learn good techniques...and, I'm still learning.

cheers rexx sounds like good advice regards paul