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Re: [campernicholson] Re: Hurth Vee Drive Lubricant Level

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  • Dennis Gibbons
    John, breather hole at the top of the plug ? Is the tube crimped at the bottom with a little hole just above the crimp? That was a modification in the later
    Message 1 of 8 , Sep 20 5:34 AM
    John,
    "breather hole at the top of the plug"?
    Is the tube crimped at the bottom with a little hole just above the crimp?
    That was a modification in the later transmissions. I have attached 3 pages
    from the manual that I have here at home. The detailed manual is down at
    the boat and I will not be there for a while.
    Dennis
    ----- Original Message -----
    From: "JOHN" <johnbaillie@...>
    To: <campernicholson@yahoogroups.com>
    Sent: Sunday, September 20, 2009 6:53 AM
    Subject: [campernicholson] Re: Hurth Vee Drive Lubricant Level


    > Dennis and Colin,
    >
    > Thanks for your replies.
    >
    > The hex bolt filler plug described by yourselves does have a hollow
    > cylindrical tube about 10cm long that I took to be the dipstick. If I fill
    > to the bottom of it, then, when running, the gearbox throws out at least a
    > litre of lubricant through the breather hole in the head of the plug. I've
    > been frightened to let the level get too low without topping up.
    >
    > I'll see if I can follow your advice, Colin, about setting the level
    > relative to the cog.
    >
    > If it's not too big, Dennis, would it be possible to scan and pdf the
    > transmission manual to me? I'd be extremely grateful. Any information I've
    > found on-line seems to relate to more recent Hurth Vee Drives.
    >
    > Thanks for your advice about lubricant. Fortunately, the engineers who
    > reinstalled the Vee Drive with the new Beta Marine engine did change the
    > lubricant from EP 90 to red ATF. So at least I've got one thing right!!
    >
    > Thanks again,
    >
    > John
    >
    > Amaryllis
    > CN35#165
    >
    > --- In campernicholson@yahoogroups.com, "Colin Campbell-Dunlop"
    > <colinj@...> wrote:
    >>
    >> Hi John,
    >>
    >>
    >>
    >> We have a Hurth 150 V drive on our boat. Fitted 1986 and with a dipstick
    >> incorporated with the filler nut.
    >>
    >>
    >>
    >> If you do not have this and assuming that the gearbox is a similar type
    >> to
    >> ours it needs to be filled so that when you peer in to the box with a
    >> torch
    >> you can only just see the top of a cog peering out of the oil.
    >>
    >>
    >>
    >> As for lubricant, we use ATF, the red stuff although EP 90 gear oil is
    >> probably ok but I prefer the former. Avoid engine oil except in an
    >> emergency if you have nothing else. Long term it will apparently craze
    >> the
    >> clutch plates due to the additives in it.
    >>
    >>
    >>
    >> I would drop the old oil. Flush through with ATF, run it for half an
    >> hour
    >> in gear, drop it all again and top back up. Go for a motor at full speed
    >> and then check to see how warm it is getting. The gearbox gets
    >> surprisingly
    >> hot even when topped up but if it is too hot to touch then it is probably
    >> getting thirsty.
    >>
    >>
    >>
    >> You will know if you have been running with fluid too low. The fluid
    >> becomes blackened by the heat, it is too hot to touch, makes a nasty hot
    >> metal smell and whines and growls a bit. We had a problem like this
    >> cross
    >> channel this summer due to my own tardiness. I went through the process
    >> above and we have motored for 24 hours plus since then, no problems.
    >>
    >>
    >>
    >> Good luck.
    >>
    >>
    >>
    >> Rgds
    >>
    >>
    >>
    >> Colin
    >>
    >>
    >>
    >> Trutz
    >>
    >>
    >>
    >> 35/225
    >>
    >>
    >>
    >> _____
    >>
    >> From: campernicholson@yahoogroups.com
    >> [mailto:campernicholson@yahoogroups.com] On Behalf Of JOHN
    >> Sent: 18 September 2009 22:53
    >> To: campernicholson@yahoogroups.com
    >> Subject: [campernicholson] Hurth Vee Drive Lubricant Level
    >>
    >>
    >>
    >>
    >>
    >> Since I became the owner of CN35, Amaryllis, (No. 165) in 2007, I have
    >> never
    >> been sure what the correct level of lubricant should be in the Hurth Vee
    >> Drive gearbox. It has no dipstick to give an indication.
    >>
    >> The gearbox is the original, installed in the boat in 1978. I can't
    >> identify
    >> the model, but the identification plate is marked:-
    >>
    >> HBW 15-2.8RV
    >> 947.20
    >> NR: 01-1067 5
    >> Carl Hurth Munchen
    >>
    >> The engineer who serviced the engine when I bought the boat filled it
    >> with
    >> gearbox oil which was constantly thrown out, when the engine was running,
    >> making me believe that there was a leak. The advice from a Hurth rep.
    >> when
    >> the engine was replaced this year was to use transmission fluid which
    >> would
    >> find its own level by throwing excess out of the filler plug breather
    >> hole.
    >> Currently the top of the fluid is about 17cm below the lip of the filler
    >> opening, giving a level of about 4cm above the bottom of the gearbox
    >> immediately below the filling point
    >>
    >> Can anyone advise?
    >>
    >> Thanks,
    >>
    >> John
    >>
    >
    >
    >
    >
    > ------------------------------------
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