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Post by boatman on Nov 15, 2019 17:33:51 GMT
I’ve got a lister ST2 that’s seized, hasn’t run for about 6 months, previous owner didn’t bother running her up every now and again. Plan of attack, decompress cylinders then a pair of stilsons on the crank. If no good, injectors out , squirt diesel in and leave for 24hours. I used to own this boat a couple of years ago and she ran sweet. Any other ideas apart from stripping down?
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Post by TonyDunkley on Nov 15, 2019 18:00:24 GMT
I’ve got a lister ST2 that’s seized, hasn’t run for about 6 months, previous owner didn’t bother running her up every now and again. Plan of attack, decompress cylinders then a pair of stilsons on the crank. If no good, injectors out , squirt diesel in and leave for 24hours. I used to own this boat a couple of years ago and she ran sweet. Any other ideas apart from stripping down? If the engine is fitted with the standard Lister hydraulic box, make sure that there isn't anything - chunk of wood or junk - jammed in the propeller. The Lister LH150 box has an oil pressure actuated brake band for reverse and a spring loaded cone clutch for ahead, and will only go into neutral when the engine is running, . . it's a fail-safe 'get you home' system in case of a gearbox hydraulic failure.
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Post by Deleted on Nov 15, 2019 19:13:33 GMT
I’ve got a lister ST2 that’s seized, hasn’t run for about 6 months, previous owner didn’t bother running her up every now and again. Plan of attack, decompress cylinders then a pair of stilsons on the crank. If no good, injectors out , squirt diesel in and leave for 24hours. I used to own this boat a couple of years ago and she ran sweet. Any other ideas apart from stripping down? I'd go for some love juice down the bores prior to mauling the crank with the Stillsons. Not too much effort and may pay dividends - the very worst you will loose is a bit of time and effort if it is seized solid! Unusual for a period of dormancy to lock an engine up - is there anything else relevant - vertical exhaust left open to the elements? Overheated when last run that sort of thing?
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Post by boatman on Nov 15, 2019 19:19:25 GMT
Hi Gaza’s, not a lot of info at the mo, I’m going to get stuck in on Sunday. No the exhaust goes out the back.
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Post by Deleted on Nov 15, 2019 19:41:22 GMT
Hi Gaza’s, not a lot of info at the mo, I’m going to get stuck in on Sunday. No the exhaust goes out the back. That crosses off a potential cause then! Good luck with it 👍🍻
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Post by TonyDunkley on Nov 15, 2019 20:34:53 GMT
Hi Gaza’s, not a lot of info at the mo, I’m going to get stuck in on Sunday. No the exhaust goes out the back. I'm marooned on my boat in the Trent near Barton Ferry at the moment with little or nothing else to do, and although the level peaked late this afternoon - for the third time in the last 10 days - I don't expect it will have dropped enough for me to be able to get off for probably at least another 2 - 3 days, so if you would like to give me a call (07553 294325) on Sunday I'll talk you through how to go about things once you've checked to make sure that the prop hasn't got jammed up with anything either under the counter or wedged on top of the skeg.
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Post by boatman on Nov 15, 2019 20:48:47 GMT
Cheers Tony
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Post by boatman on Nov 15, 2019 21:00:09 GMT
Hi Gaza’s, not a lot of info at the mo, I’m going to get stuck in on Sunday. No the exhaust goes out the back. I'm marooned on my boat in the Trent near Barton Ferry at the moment with little or nothing else to do, and although the level peaked late this afternoon - for the third time in the last 10 days - I don't expect it will have dropped enough for me to be able to get off for probably at least another 2 - 3 days, so if you would like to give me a call (07553 294325) on Sunday I'll talk you through how to go about things once you've checked to make sure that the prop hasn't got jammed up with anything either under the counter or wedged on top of the skeg. The boat was punted across the marina last month and slipped for blacking so the prop will be clear
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Post by Deleted on Nov 15, 2019 21:24:39 GMT
Years ago I unseized a SR2 by wobbling the crank with a chain wrench. A proper Record chain wrench not an oil filter thing. The engine had spent some time under water previously.
Once free managed to get it going okay.
Obvious question is how do you know it is "seized" this implies you have already had tools on it.
Another way you can seize a ST/LR/SR type is if you get a fuel leak behind the protective cover and it tops up the lube oil enough to thin it right down then it could cause seizing in theory.
I had this on my first boat (another SR2) and the high and thin oil breached the rings and it went completely mental running on its own lube oil. Luckily it had decompressors so I was able to stop it.
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Post by boatman on Nov 15, 2019 21:34:58 GMT
Aye up magnetman, no I’ve not had hands on yet. The marina refused to try and turn the crankshaft in case they broke something and ended up liable. They tried to start it but wouldn’t crank and apparently the feed to starter motor got very hot. I’m chomping at the bit to get my hands on it.
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Post by Deleted on Nov 15, 2019 21:40:06 GMT
Maybe the starter motor pinion has not disengaged from the ring gear.
That would make sense.
Not sure what type it is but I think some of the old Bendix starters did have a habit of getting stuck. Perhaps that was why the boatyard did not want to force the issue.
Best to check the gearbox thing Tony mentioned as well before doing brute force.
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Post by Mr Stabby on Nov 15, 2019 21:44:51 GMT
Personally, I'd take the cylinder heads off, chuck some white vinegar into the bores, leave it to soak for a while and then tap the pistons using a hammer and a soft wooden drift.
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Post by TonyDunkley on Nov 15, 2019 22:09:16 GMT
I'm marooned on my boat in the Trent near Barton Ferry at the moment with little or nothing else to do, and although the level peaked late this afternoon - for the third time in the last 10 days - I don't expect it will have dropped enough for me to be able to get off for probably at least another 2 - 3 days, so if you would like to give me a call (07553 294325) on Sunday I'll talk you through how to go about things once you've checked to make sure that the prop hasn't got jammed up with anything either under the counter or wedged on top of the skeg. The boat was punted across the marina last month and slipped for blacking so the prop will be clear Whilst the boat was on the cradle was it by any chance stern on to the prevailing wind and weather and trimmed more by the head than it normally would be afloat ?
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Post by boatman on Nov 15, 2019 22:36:32 GMT
I wasn’t there Tony, but it’s Barton turns marina, so on the cradle bow first then up the ramp
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Post by TonyDunkley on Nov 15, 2019 23:23:44 GMT
I wasn’t there Tony, but it’s Barton turns marina, so on the cradle bow first then up the ramp I'm not familiar with their slipway layout, . . but is it one of those places with the slipway rails extending up onto the level once the cradle's clear of the water so the boat sits level whilst it's out ?
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