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Messages - cobbadog

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Engines / Re: Lister LT1
« on: October 26, 2021, 05:43:31 AM »
I am with you with the electronic department, it is all something very different and tricky to get my head around. At least you are prepared to have a go at the repair with guidance. Bob should be able to help you the most and to have the ability to reverse engineer electronics is something made of nightmares in my book and comes easy to others.
I would do my best to resurrect this generator and board as the new ones are not as well designed and built to last. I look forward to following this repair and outcome, good luck with it.

Engines / Re: Lister LT1
« on: October 25, 2021, 04:14:28 AM »
Welcome to the Forum.
As suggested take the circuit board out and gently clean it up using the least damaging solvents possible. Try it on an area that wont matter if damage occurs. Clean dry soft brush first even using compressed air to aid the cleaning. Electronic stores sell aerosol cans of solvents suitable for cleaning circuit boards but still be careful using them.
The last thing to do is give up on these well made old generators nothing new stand up against them on build and quality. I know very little or less on electronics but I have been coached into attempting a fix on a circuit board on a MIG welder. I now, almost know how to identify a transistor, capacitor and diode by reading the board. I still have a long way to go to work out what the values are or mean but with time and patience I am going forward.
Freeing up the brushes in the brush holders is very important and I mean 'clean' not just so they can move in and out. Also the contact surface on the armature must also be cleaned up using some fine wet n dry paper and I dont use any water when I have done these in the past. New brushes should be readily available and if not easy to get a hold of I have bought some that were a little bit bigger than the originals and filed them down to size. Like anything the cleaner every thing is the better it works and also runs cooler.
Look forward to seeing more pics of the generator and the board.

Engines / Re: Lister SR2 fuel filter
« on: October 06, 2021, 04:32:33 AM »
Sounds fair running it with 2 filters. I have a large tropical high speed 8hp Lister that had no filters.  So I fitted a water separator and filter from a truck. This gives me the chance to see any water in the glass bowl and easily drain if I ever see any. So really any sort of fuel filter will work on these brilliant engines so long as they are replaced as required. Good luck with your repairs and let us know how you get on.

Engines / Re: Lister SR2 fuel filter
« on: October 05, 2021, 11:25:27 AM »
If the threads are in good condition no sealant is required. I have been in the situation where a sealant had to be used so I used a product calle STAG Joint paste. I applied it to the thread and tightened the joint and left it 24 hours to sure and that worked fo me.
With the banjo fittings the new soft fibre washers are what makes the seal not the thread so again with the washers no sealant required.
Some fuel lines use an olive fitting which compresses onto the fuel line when you tighten it up. If the fuel line is sitting square in the hole and the seats for the olive to sit into are clean then this should seal fairly well with a slight chance of a leak past the thread.
That was very good advise to NOT use the PTF tape it is not recomended on fuel systems.
Other products are out there and from memory the Loctite range have a very good sealant which is like a gel and use it as directed and it will work.
Is there any reason why thi engine has 2 in line fuel filters? I believe that one is enough.

Other Slow Speed Diesels / Re: Few old Bamfords
« on: September 27, 2021, 12:01:38 PM »
Beautiful engines to hear running too. Keep us up to date with the progress please

Engines / Re: Lister SR2 fuel filter
« on: September 25, 2021, 11:59:58 AM »
Now that diagram is a huge help. That is not the first time that so called professionals have stuffed up. They are not always helpful with these older engines and possibly never stripped one. I had an apprentice stuff up a simple tune up on a chain saw once. Then before leaving I had a quick inspection of it as I knew it still was not right and found a few mistakes which he denied. I gave him a piece of my mind and it was not nice for him which bought the boss out of his office and I showed him what his unsupervised apprantice had done and told him to wipe his @rse with the bill as I wont be paid.
Sorry, back to your little problem. With the metal washer it might fit onto the bolt that holds the bol to the body and the "O" ring fit between the washer and body.
For the missing spring. Fit the filter with the large hole facing up but no "O" ring ontop of it and measure from the top of the bowl to the top of the filter. This is or should be an ideal length spring you need to buy. It does not need to be very strong just enough to hold some pressure against the filter body. We have a hardware chain here that has a section of both extension and compression springs of various gauges and lengths. If you find a light spring and is too loong an angle grinder sorts that out quickly. I have just done something similar recently with a throttle return spring in a Mk2 Villiers carby. Have a close look up inside the body where the filter with the "O" ring should fit to mke sure there is not a step that will require the new spring to be shorter again.
It may also be an idea to check both of your filters to make sure they are both complete. I am not sure why you need 2 of these filter set ups so maybe one is enough for your new to you, narrow boat. Would like to see a pic of it too one day.

Engines / Re: Lister SR2 fuel filter
« on: September 23, 2021, 07:50:42 AM »
Something that just came to mind about the bleed screws. Some do need an "O" ring and some do not and are a tapered fit so look closely to what you have. Some times after market replacement filters come with an assortment of gaskets, seals and "O" rings and sometime not all are needed. I know when I do an oil change on our beavertail truck that I end up with a seal and "O" ring too many for the job.

Engines / Re: Lister SR2 fuel filter
« on: September 23, 2021, 07:48:04 AM »
Do you know exactly where the fuel is leaking from. If it is leaking from the large "O" ring that sits between the housing and the bowl then it is either cracked, broken or not seated properly. If it is leaking from the fuel lines in or out then tell us what type of fittings are there. If there are olives then maybe they need to be replaced. If there is a flare joint then look for any cracks in the flare.
Finally the air bleed screws if the "O" rings if fitted are damaged or simply they are not screwed up firm enough but do not over tighten. Can't remember what the filter itself looks like but I didn't think there was a top and bottom to them. Would need a pic of what you have and of up inside where it sits to confirm.

Engines / Re: Lister D now running....but small fuel leak
« on: September 15, 2021, 06:44:50 AM »
Small generators and water pumps are common some air compressors are out there. I was going to build a 'Prony Brake' one time which was going to be a little bit involved but it demonstrates the HP of the engine and would really load it up for short periods of time.

Engines / Re: Lister D now running....but small fuel leak
« on: September 14, 2021, 12:18:10 AM »
Great news and outcome. Now go out there and make it run for hours and while that is happening find something to attach to it so it can be under load when running, they love it.

General Discussion / Re: E5 or E10 for a Lister D
« on: September 12, 2021, 12:39:15 PM »
G'day AJ,
Thankfully we dont have E5 here in Oz and I wont ever use E10 except to start a fire. With these new fuels they will quite possibly run these old engines with a little bit of fine tuning to compensate for the lesser octane but beware even with a Premium fuel there are no upper cylinder lubricants so I suggest to add some. Valve seats mill thank you for using the lubricant and will extand the life of them too.
Here they tried using E10 in the V8 race cars for a few seasons but have noticed that has been canned for a higher octane rated fuel as they had to burn far more extra fuel to maintain the HP of the engines. So while the Governments and Green tree huggers insist you go with the Ethanol based fuels you will be burning more fuel for the same outcome so dont feel it will save you money in fuel costs as it just does not meet the grade of performance.
Would be interested in hearing back if you do try it and see how you feel about it.

General Discussion / Re: Any steam engines left?
« on: September 07, 2021, 12:43:57 PM »
Love seeing steam but out here in Oz you have to have the boilers certified along with a certificate to operate a steam powered anything. We sometimes go to places just to watch these silent monsters tick over.

General Discussion / Re: 3 pin Temperature Sender
« on: September 02, 2021, 12:20:46 PM »
Chheers for the link. I think I just got a bit closer to the cave entrance.

General Discussion / Re: 3 pin Temperature Sender
« on: September 02, 2021, 06:50:09 AM »
Hi Mike,
Boy haven't I been left in the dark with improvements. I have not heard of these type of senders but I do live almost at the back of a cave here in Oz.

General Discussion / Re: 3 pin Temperature Sender
« on: September 01, 2021, 05:42:47 AM »
I would be happy with that temp. Lets hope that your Son gets a lot of enjoyment out of being on the water in a narrow boat. I spent a very short time on one many years ago in the mid 1980's, very enjoyable and relaxing.

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