BobE
Well-Known Member
Thought you were bragging about him till I read the last word!!
Cheers Bob E...
Cheers Bob E...
Difficulty replacing engine anode on Bukh 10
- Thread starter Twister_Ken
- Start date
Trop Cher
Well-Known Member
Hi,
Are you discussing the small zinc anode (2/3 cm long) which screws in somewhere behind the alternator ?
Could someone please tell me how and where to fit this as I'm having difficulty finding the old one?
Perhaps pushing my luck here, but a photo would be a great help. I also have a Bukh 10.
Thanks
Simon
Are you discussing the small zinc anode (2/3 cm long) which screws in somewhere behind the alternator ?
Could someone please tell me how and where to fit this as I'm having difficulty finding the old one?
Perhaps pushing my luck here, but a photo would be a great help. I also have a Bukh 10.
Thanks
Simon
Twister_Ken
Well-Known Member
Simon,
That's the fellow. No photo available from me but...
Look at the engine from the front. Go to the left hand side as you look at it. Peer towards the back of the engine (a torch may help). You will see the cables coming from the speed control lever. They terminate on a quadrant. Immediately in front of the quadrant (i.e between the quadrant and you) is the anode bolt. It is mounted horizontally in the fore and aft plane, with the bolt head facing away from you. If your engine installation is like mine it is barely visible if you look obliquely down and access is quite restricted to get a tool onto it and then get some grunt onto the tool.
Good luck!
That's the fellow. No photo available from me but...
Look at the engine from the front. Go to the left hand side as you look at it. Peer towards the back of the engine (a torch may help). You will see the cables coming from the speed control lever. They terminate on a quadrant. Immediately in front of the quadrant (i.e between the quadrant and you) is the anode bolt. It is mounted horizontally in the fore and aft plane, with the bolt head facing away from you. If your engine installation is like mine it is barely visible if you look obliquely down and access is quite restricted to get a tool onto it and then get some grunt onto the tool.
Good luck!
Twister_Ken
Well-Known Member
Simon, I've found a pic on the web - trust the owner will forgive me using it. The view is from in front and above the engine - I've added an arrow to the anode bolt. The layout of this engine varies a little from mine, and maybe yours, but the bolt position is the same.
Trop Cher
Well-Known Member
Thanks very much for the photo, I'll have a good look next time I'm at the boat and hope I'll manage to change it.
Thanks
Thanks
meandraft
Well-Known Member
Here's a rear view of my DV10. The anode bolt is the shiney to the right of centre.
VicMallows
Well-Known Member
[ QUOTE ]
Here's a rear view of my DV10. The anode bolt is the shiney to the right of centre.
[/ QUOTE ]
......and you've obviously just forked out the horrendous price for a new exhaust bend!.......... /forums/images/graemlins/laugh.gif
Vic
Here's a rear view of my DV10. The anode bolt is the shiney to the right of centre.
[/ QUOTE ]
......and you've obviously just forked out the horrendous price for a new exhaust bend!.......... /forums/images/graemlins/laugh.gif
Vic
rhumlady
Well-Known Member
And is that a new flange it is attached to? load of money!!!
meandraft
Well-Known Member
Glad you noticed the new exhaust elbow. About £70 last year if I remember correctly. Flange is old though. New flexible hose also fitted but out of view.
Twister_Ken
Well-Known Member
Dunnit.
Used a flat ring spanner (without a cranked end), after dismantling part of the engine box to provide access - but on unbolting old one, found the zinc remained behind. Managed to pull that using a mole grip with a 'crocodile' nose.
After all that, old anode was only about 10-15% worn so, after a wire brushing to get back to bright metal, has gone back in for rest of season, but with new nut - old one was chewed up beyond common-sense due to my (and maybe other's) efforts.
(I rather like the Rolling Stones' style 'hot licks' paint remnant)
Used a flat ring spanner (without a cranked end), after dismantling part of the engine box to provide access - but on unbolting old one, found the zinc remained behind. Managed to pull that using a mole grip with a 'crocodile' nose.
After all that, old anode was only about 10-15% worn so, after a wire brushing to get back to bright metal, has gone back in for rest of season, but with new nut - old one was chewed up beyond common-sense due to my (and maybe other's) efforts.
(I rather like the Rolling Stones' style 'hot licks' paint remnant)
rhumlady
Well-Known Member
The question is why did the old one come adrift? It could be that it was being held in place by crud in the jacket! sorry to say that now you have refitted it and I hope that you checked by poking around with a small screwdriver or some other such implement.
Twister_Ken
Well-Known Member
"I hope that you checked by poking around with a small screwdriver "
I did exactly that. The anode has an embedded screw which threads into the back of the retaining bolt. Undoing the retaining bolt also unscrews the anode if it is a little bit corroded onto the sleeve it fits into, thus the anode gets left behind. Still, it pulled out easily enough once I'd managed to grip the screw with moles. Not a brilliant piece of design. In fact, awful.
I did exactly that. The anode has an embedded screw which threads into the back of the retaining bolt. Undoing the retaining bolt also unscrews the anode if it is a little bit corroded onto the sleeve it fits into, thus the anode gets left behind. Still, it pulled out easily enough once I'd managed to grip the screw with moles. Not a brilliant piece of design. In fact, awful.
VicMallows
Well-Known Member
[ QUOTE ]
" Not a brilliant piece of design. In fact, awful.
[/ QUOTE ]
Agree. One of the threads should have been left-hand. Because it's a specially made part anyway, they would logically choose the brass plug-nut. Now that would GUARANTEE it got nicely chewed up before people found out it was LH /forums/images/graemlins/laugh.gif
However, as you've found out, the anode seems to corrode very little after the first year or two (probably because the block has a nice coating of limescale by then /forums/images/graemlins/grin.gif) . That's why I havn't exactly panicked that mine has been immoveable for quite a few years.
Vic
" Not a brilliant piece of design. In fact, awful.
[/ QUOTE ]
Agree. One of the threads should have been left-hand. Because it's a specially made part anyway, they would logically choose the brass plug-nut. Now that would GUARANTEE it got nicely chewed up before people found out it was LH /forums/images/graemlins/laugh.gif
However, as you've found out, the anode seems to corrode very little after the first year or two (probably because the block has a nice coating of limescale by then /forums/images/graemlins/grin.gif) . That's why I havn't exactly panicked that mine has been immoveable for quite a few years.
Vic
Twister_Ken
Well-Known Member
I could rent you a 22mm ring spanner, Mister!
rhumlady
Well-Known Member
I have found that my anodes last about 6 months and if staying in the water over winter I usually check and change it, if required, at the start and end of the season. It's not that it erodes over that time but it has a tendency to erode from the brass plug forward and can cause a large lump to drop off the end. I found this when cleaning out the block a few years back and it was confirmed byt Bukh who say they often find lumps like this when replacing cylinder liners.
VicMallows
Well-Known Member
[ QUOTE ]
I could rent you a 22mm ring spanner, Mister!
[/ QUOTE ]
Oh! ... I have every imaginable 22mm spanner.....have even taken the quadrant off so as to get a good socket onto it. It's now a case of either grinding new flats and having another go or drilling out. /forums/images/graemlins/frown.gif
Vic
I could rent you a 22mm ring spanner, Mister!
[/ QUOTE ]
Oh! ... I have every imaginable 22mm spanner.....have even taken the quadrant off so as to get a good socket onto it. It's now a case of either grinding new flats and having another go or drilling out. /forums/images/graemlins/frown.gif
Vic