ferrispeterchris
Well-Known Member
How do you stop this type of diesel engine?Someone told me to turn off fuel,pump and use the decompression lever,others say do not touch the lever!
Volvo Penta MD1B How do you stop it?
- Thread starter ferrispeterchris
- Start date
rjp
Well-Known Member
Diesel engines in general are stopped by cutting the fuel supply. There is normally a cable operated control specifically for this purpose. The MD1B which I had several years ago had this. It is also possible of course to have a more sophisticated electric operated system, but unlikely this would apply to an MD1B.
Mirelle
N/A
On the early MDs, the throttle will go past the "idle" position to a "stop" position, i.e. a position in which no fuel is being delivered. Nothing could be simpler!
Steve_N
Well-Known Member
The brass-colour lever in the centre of this picture is the stop lever on an MD1B, viewed from aft over the reverse gear. It should have a cable attached: follow it to see what you need to pull..
dog
Well-Known Member
My father had the MD1B in his Contessa 26- and yes to stop the engine you push the throttle way back past idle and the engine will eventually stop. You would be amazed at how slow we could get it to 'tick over' before it would finally die!! Are you aware of the cold start button on top of the engine too?
Mirelle
N/A
It depends on whether you have single lever control or not.
I've got an MD2. It has the old type gearbox so it has a separate throttle lever, which can be pushed all the way to "no fuel".
The engine that Steve illustrates has single lever control so there is a separate stop lever. As Steve says, follow the cable...
(if there were no separate stop lever the engine would stop each time you went from ahead to astern and vice versa!)
Its actually a question of the gearbox which decides how the engine is stopped!
I've got an MD2. It has the old type gearbox so it has a separate throttle lever, which can be pushed all the way to "no fuel".
The engine that Steve illustrates has single lever control so there is a separate stop lever. As Steve says, follow the cable...
(if there were no separate stop lever the engine would stop each time you went from ahead to astern and vice versa!)
Its actually a question of the gearbox which decides how the engine is stopped!
ferrispeterchris
Well-Known Member
Re: It depends on whether you have single lever control or not.
Dog,I am totally unaware of a cold start button,tell me more. Thanks everyone, Peter.
Dog,I am totally unaware of a cold start button,tell me more. Thanks everyone, Peter.
ferrispeterchris
Well-Known Member
Re: It depends on whether you have single lever control or not.
Mirelle and dog.Won't be at boat till tomorrow to check against photo.What do you mean by single lever control?How can you throttle back beyond the back stop screw to stop engine? Peter.
Mirelle and dog.Won't be at boat till tomorrow to check against photo.What do you mean by single lever control?How can you throttle back beyond the back stop screw to stop engine? Peter.
DavidGrieves
Well-Known Member
Hi
There is some info on the MD1 here http://www.boten.nl/motoren/motoren_pdf/volvo_penta_md1.pdf
The file is 1MB so it will take some time to download, once you've got it save a copy of it to a folder of your choice.
Dave
There is some info on the MD1 here http://www.boten.nl/motoren/motoren_pdf/volvo_penta_md1.pdf
The file is 1MB so it will take some time to download, once you've got it save a copy of it to a folder of your choice.
Dave
dog
Well-Known Member
Re: It depends on whether you have single lever control or not.
Long time ago now, but on the engine we had there was a little metal button on top of the engine (dont ask exactly where, but easy to find).I remember the start procedure as- raise the decompression lever to vertical position with cold start button depressed, crank engine over- then drop the lever. With any luck the thumper should then be ticking over nicely!!
Hope this helps!!
Brian
Long time ago now, but on the engine we had there was a little metal button on top of the engine (dont ask exactly where, but easy to find).I remember the start procedure as- raise the decompression lever to vertical position with cold start button depressed, crank engine over- then drop the lever. With any luck the thumper should then be ticking over nicely!!
Hope this helps!!
Brian
cliff
Well-Known Member
I thought the usual question regarding these engines was how to start them - not how to stop them /forums/images/graemlins/wink.gif
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"Artificial intelligence is no match for natural stupidity"
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Mirelle
N/A
Brilliant! Thanks!
The handbook is getting hard to come by! And my copy is in separate pages and oil stained!
The handbook is getting hard to come by! And my copy is in separate pages and oil stained!
Mirelle
N/A
Re: It depends on whether you have single lever control or not.
If the ahead and astern gear and the throttle are both controlled by a single lever, you have single lever control, and the back of your engine will look like the picture.
If the ahead and astern gears are controlled by a big gear lever, with a separate throttle control, you have an RB gearbox and the back of the engine will have a horzontal quadrant with a spring which tends to hold it closed, wrapped round which is the end of a wire from a Bowden cable leading to the throttle.
On the latter type, you stop the engine by closing the throttle.
On the former type, you pull the stop button.
In both cases, the cold start lever is adjacent to the fitting on the engine and is a brass button about half an inch in diameter, which you push down before cranking the engine in cold weather (it increases the supply of fuel to the engine).
If the ahead and astern gear and the throttle are both controlled by a single lever, you have single lever control, and the back of your engine will look like the picture.
If the ahead and astern gears are controlled by a big gear lever, with a separate throttle control, you have an RB gearbox and the back of the engine will have a horzontal quadrant with a spring which tends to hold it closed, wrapped round which is the end of a wire from a Bowden cable leading to the throttle.
On the latter type, you stop the engine by closing the throttle.
On the former type, you pull the stop button.
In both cases, the cold start lever is adjacent to the fitting on the engine and is a brass button about half an inch in diameter, which you push down before cranking the engine in cold weather (it increases the supply of fuel to the engine).
Bilgediver
Well-Known Member
LOL...No it is NOT the stop lever....This is the de lux remote cold start arrangement for setting the cold start without getting sleeves etc all oily from reaching over the engine.
Regards JOHN
Regards JOHN
ferrispeterchris
Well-Known Member
Re: It depends on whether you have single lever control or not.
I have looked at the engine and there is no cut off lever.I have changed the control to Teleflex single lever working from the original (seized) double which still leaves me with the stopping problem. Peter.
I have looked at the engine and there is no cut off lever.I have changed the control to Teleflex single lever working from the original (seized) double which still leaves me with the stopping problem. Peter.
Steve_N
Well-Known Member
Are you LOLing at me! Fair enough /forums/images/graemlins/smile.gif
I have to admit that my MD1B knowledge comes only from when I considered buying a boat so equipped, and took that photo. I ran the engine several times and always stopped it by pulling the T handle on the end of the cable attached to that lever on the injection pump, as in the picture.
In the manual under 'Stopping' it says: "..or turn the lever at the fuel injection pump clockwise. This actuates the pump in such a way that the fuel feed is cut off", which is what pulling the T handle on the end of that cable would do. So I don't know..
I have to admit that my MD1B knowledge comes only from when I considered buying a boat so equipped, and took that photo. I ran the engine several times and always stopped it by pulling the T handle on the end of the cable attached to that lever on the injection pump, as in the picture.
In the manual under 'Stopping' it says: "..or turn the lever at the fuel injection pump clockwise. This actuates the pump in such a way that the fuel feed is cut off", which is what pulling the T handle on the end of that cable would do. So I don't know..
scottie
Well-Known Member
if you are trying to use a single lever control on a RB gearbox which has a 1/2" selecter lever dont as it will not work end of story
if you look at the photo you will sea that there is a wire poking through the connection for the gov
the end fitting for the gov has a spring loaded cube
to stop the engine you put it in neutral and compress the spring this will apply which ever gearbox is fitted the quadrant throttle was only fitted to the MDI ps if you have changed the gearbox from RB to MS then youhave to cgange the bolt in the end of the crankshaft as the RB has an oil feed there
if you look at the photo you will sea that there is a wire poking through the connection for the gov
the end fitting for the gov has a spring loaded cube
to stop the engine you put it in neutral and compress the spring this will apply which ever gearbox is fitted the quadrant throttle was only fitted to the MDI ps if you have changed the gearbox from RB to MS then youhave to cgange the bolt in the end of the crankshaft as the RB has an oil feed there
Mirelle
N/A
Absolutely right
The MS gearbox is quite hard to come by, there are more old engines than old gearboxes around as some engines were fitted to saildrives. My engine is an MD2 (with RB gearbox) so I wrongly assumed that some B's had the quadrant throttle.
The MS gearbox is quite hard to come by, there are more old engines than old gearboxes around as some engines were fitted to saildrives. My engine is an MD2 (with RB gearbox) so I wrongly assumed that some B's had the quadrant throttle.