40 plus clutched long shaft gearbox woes FPCl 667CC8

You can talk about almost anything here

Moderators: John@sos, charlesp, Charles uk, RickUK, Petergalileo

Post Reply
User avatar
Mutineer
Posts: 255
Joined: Wed Sep 01, 2010 9:25 am
Location: Vancouver BC Canada
Contact:

40 plus clutched long shaft gearbox woes FPCl 667CC8

Post by Mutineer »

I haven't been here for a while
It's because, after a lower end mishap with the above mentioned engine I switched briefly to the dark side(Johnson) but as that motor was a short shaft and prone to being completely submerged and drowned on the back of my Danica 16 when I'd get nailed by a large power boat wake or two I thought I'd take another stab at the lower end of this poor abused gull.

What happened before was:
- she had leaking lower end seals seals.
-This led to the bottom end being run out of oil at least once
- I replaced the seals
-However the above abuse led to excessive wear on the shaft (rough and ridged), the front end cap bush and perhaps the hardened crown wheel thrust washer
This led to a noisier bottom end, likely as a result of a poor mating between the crown wheel and the bevel pinion
-This led to a mishap when my girlfriend was steering and we nosed directly into a big wake (other boats wakes seem to be the biggest peril!)
the motor started running wild (happily only a couple minutes from our destination(12knts from home)) and a couple hours were spent on the dock dismantling and trying to troubleshoot with no success.

Upon further recent examination it seems I have a few potential problems.

-The teeth are now worn on the two gears in question requiring them to be closer to properly engage
- perhaps the front end cap bush is also worn resulting in the two gears not being pushed together enough by the end cap
- the actual prop shaft is quite rough and worn on the 'front end' making it perhaps a little sloppier and not as easy to shift in and out of gear(friction from the fine ridges worn into it)

on the bench
If I add about a mil or 2 of washer between the front end cap bush and the crown wheel thrust washer I can get the gears to engage each other, too much added and the clutch won't disengage. it seems a fine line and I'm guessing it's a result of the worn gears

Clutched 40 plusses are rare as hen's teeth around here(I've only ever seen the one..and I own it) so no parts available

i wonder if it's worth trying to repair the bottom end or if it's a losing proposition

How hard is it to replace the bevel pinion?? (if I had a replacement)

An ideas?

Thanks and happy new year all!!
If attacked by a group of clowns
Go for the juggler!
User avatar
Oyster 49
Posts: 3318
Joined: Tue Oct 26, 2010 6:55 pm
Location: Derbyshire, UK

Re: 40 plus clutched long shaft gearbox woes FPCl 667CC8

Post by Oyster 49 »

I suggest obtaining a complete replacement gearbox as the quickest option. Talk to John Williams at SOS, who owns this forum. He will probably be able to supply what you need.
User avatar
Mutineer
Posts: 255
Joined: Wed Sep 01, 2010 9:25 am
Location: Vancouver BC Canada
Contact:

Re: 40 plus clutched long shaft gearbox woes FPCl 667CC8

Post by Mutineer »

Good idea! I'm looking into that
Thanks
If attacked by a group of clowns
Go for the juggler!
Post Reply