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Post by Deleted on Feb 22, 2019 20:10:33 GMT
Sorry Stabby, that’s cobblers. Part of my duties Used to include servicing Perkins engined (amongst others) standby generators housed in 20’ containers - they came into the workshop, were serviced then sent back to site were I may not see them again for up to 6 months at a time. They have toothed belts where stretch is not an issue. It’s probably best to give it up now!
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Post by Deleted on Feb 22, 2019 20:16:31 GMT
I must say I had assumed the Mrs tabby comment about cleaning the pulleys when changing alternator and or water pump belts was tongue in cheek.
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Post by Mr Stabby on Feb 22, 2019 20:24:05 GMT
I must say I had assumed the Mrs tabby comment about cleaning the pulleys when changing alternator and or water pump belts was tongue in cheek. No- it's always best practice to clean around any mechanical component when working on it or replacing parts.
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Post by Deleted on Feb 22, 2019 20:24:55 GMT
Yes but does anyone actually do it?
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Post by TonyDunkley on Feb 22, 2019 20:27:30 GMT
These can only be regarded as 'top tips' if you happen to be the proud but blissfully ignorant owner of a well worn old engine sporting unserviceable crankshaft, waterpump, and alternator pulleys, and a knackered front crankshaft/timing case oil seal. Engines with serviceable crank and ancillaries pulleys, and without front end oil leaks, don't require any such repeated or frequent adjustment, or farting about with degreasing agents to accompany the fitting of new belts. It is absolutely normal for any diesel engine, even one in good condition but particularly one in a relatively unventilated space such as a narrowboat engine hole, to cover adjacent components with a light misting of oil. I would clean this light misting of oil off when installing a new fan belt, you wouldn't. It is also absolutely normal for a new fan belt to slacken as it beds in, and so I would re-tension a new fan belt after it had been in service for a short period, you wouldn't. We'll just have to leave it to others to decide who they would rather have installing a new fan belt for them, me or you. Apart from some air-cooled Petter, Lister, and Ruston marine propulsion and auxiliary models/types, . . boat engines don't have fans, or fan belts.
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Post by peterboat on Feb 22, 2019 20:29:23 GMT
It is absolutely normal for any diesel engine, even one in good condition but particularly one in a relatively unventilated space such as a narrowboat engine hole, to cover adjacent components with a light misting of oil. I would clean this light misting of oil off when installing a new fan belt, you wouldn't. It is also absolutely normal for a new fan belt to slacken as it beds in, and so I would re-tension a new fan belt after it had been in service for a short period, you wouldn't. We'll just have to leave it to others to decide who they would rather have installing a new fan belt for them, me or you. Sorry Stabby, that’s cobblers. Part of my duties Used to include servicing Perkins engined (amongst others) standby generators housed in 20’ containers - they came into the workshop, were serviced then sent back to site were I may not see them again for up to 6 months at a time. I wouldn’t have been very popular if the alternator belt needed fucking about with using your methods - any problems were dealt with in the workshop, not on site were a failure could mean the loss of an install and a potentially huge bill (sometimes in the several £100k+ Region) I’m guessing peterboat wouldn’t make much money on you in his garage either! You and I are mechanics Gazza, I learnt a long time ago how to tension a belt, though I have to say boats are well overdue auto tensioners! As for oil mist remember what he has in his boat, its an old BMC I will lay odds its breather will be to air hence the oil mist modern diesels especially jap ones dont breath oil and in most cases dont use it
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Post by Deleted on Feb 22, 2019 20:39:23 GMT
Sorry Stabby, that’s cobblers. Part of my duties Used to include servicing Perkins engined (amongst others) standby generators housed in 20’ containers - they came into the workshop, were serviced then sent back to site were I may not see them again for up to 6 months at a time. I wouldn’t have been very popular if the alternator belt needed fucking about with using your methods - any problems were dealt with in the workshop, not on site were a failure could mean the loss of an install and a potentially huge bill (sometimes in the several £100k+ Region) I’m guessing peterboat wouldn’t make much money on you in his garage either! You and I are mechanics Gazza, I learnt a long time ago how to tension a belt, though I have to say boats are well overdue auto tensioners! As for oil mist remember what he has in his boat, its an old BMC I will lay odds its breather will be to air hence the oil mist modern diesels especially jap ones dont breath oil and in most cases dont use it You are probably right about the breather- at best it will be into a crap pancake type filter , at worst blowing into the bilge! boat builders are often no engineers! I’ve changed one belt in 9 years and 1000 hours on our 1500, it’s never needed tensioning and is regularly checked - when I fitted the rebuilt engine I fitted the air cleaner from a Hyundai Coupe, it’s only this year that I’ve fitted the catch can - mainly because of the turbo installation. As an aside I’ve got to route the crankcase breather on the 105e engined Freeman out of the engine hole, which is mostly in the cabin🧐🤦🏼♂️ the 105e had no PCV; just a tin can collector for the oil mist. There is no space for this in a freeman so it is binned off and the nasty oil vapour is allowed to blow about were it likes - not on my watch!
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Post by TonyDunkley on Feb 22, 2019 20:41:23 GMT
I must say I had assumed the Mrs tabby comment about cleaning the pulleys when changing alternator and or water pump belts was tongue in cheek. The only cheek Mr Shit-for-Brains tongue would have been anywhere near would be one of the two on either of his arse, which of course, he would have been talking through at the time !
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Post by Mr Stabby on Feb 22, 2019 21:23:04 GMT
Sorry Stabby, that’s cobblers. Part of my duties Used to include servicing Perkins engined (amongst others) standby generators housed in 20’ containers - they came into the workshop, were serviced then sent back to site were I may not see them again for up to 6 months at a time. I wouldn’t have been very popular if the alternator belt needed fucking about with using your methods - any problems were dealt with in the workshop, not on site were a failure could mean the loss of an install and a potentially huge bill (sometimes in the several £100k+ Region) I’m guessing peterboat wouldn’t make much money on you in his garage either! You and I are mechanics Gazza, I learnt a long time ago how to tension a belt, though I have to say boats are well overdue auto tensioners! As for oil mist remember what he has in his boat, its an old BMC I will lay odds its breather will be to air hence the oil mist modern diesels especially jap ones dont breath oil and in most cases dont use it But that's the difference between, say, working commercially on modern vehicles, and restoring a classic car. When you service two and three year old Fords and Vauxhalls, you have to turn the job around in 30 minutes. When you restore a Mk2 Jaguar you leave the nuts and bolts soaking in a vinegar dip for a week. The massive majority of boaters do not have uber-efficient euro 5+ engines in their boats.
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Post by TonyDunkley on Feb 22, 2019 21:32:04 GMT
Sorry Stabby, that’s cobblers. Part of my duties Used to include servicing Perkins engined (amongst others) standby generators housed in 20’ containers - they came into the workshop, were serviced then sent back to site were I may not see them again for up to 6 months at a time. They have toothed belts where stretch is not an issue. As you were wittering on about 'teeth' on Donkey's alternator belt on some earlier page in this thread, I very much doubt you have even the remotest idea what 'tooth' belts are, or what they're used for.
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Post by Mr Stabby on Feb 22, 2019 21:43:08 GMT
They have toothed belts where stretch is not an issue. As you were wittering on about 'teeth' on Donkey's alternator belt on some earlier page in this thread, I very much doubt you have even the remotest idea what 'tooth' belts are, or what they're used for. I will try to explain this in very simple language, in the kind of way one does for simple folk. Generally speaking, there are two types of auxilliary drive belts, V belts and serpentine belts. Serpentine belts have tensioners, V belts don't. V belts generally benefit from being re-tensioned after being fitted. Hope this helps. Incidentally, I cannot find one single reference on Google to the impressive company mentioned in your signature. Are you sure it is actually a thing?
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Post by TonyDunkley on Feb 22, 2019 21:44:30 GMT
You and I are mechanics Gazza, I learnt a long time ago how to tension a belt, though I have to say boats are well overdue auto tensioners! As for oil mist remember what he has in his boat, its an old BMC I will lay odds its breather will be to air hence the oil mist modern diesels especially jap ones dont breath oil and in most cases dont use it The massive majority of boaters do not have uber-efficient euro 5+ engines in their boats. The 'massive majority' of boaters are also able to get their boats through 185' wide bridge arches on the Thames without clouting one of the bridge piers.
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Post by Deleted on Feb 22, 2019 21:46:06 GMT
Toothed belts are used on electric skateboards.
I have been considering employing a toothed belt for an electric canoe conversion where I want the motor to remain outside the vessel but above the waterline. Like a miniature outboard motor.
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Post by Mr Stabby on Feb 22, 2019 21:48:06 GMT
The massive majority of boaters do not have uber-efficient euro 5+ engines in their boats. The 'massive majority' of boaters are also able to get their boats through 185' wide bridge arches on the Thames without clouting one of the bridge piers. The "massive majority" of marine engineers wouldn't say "Oh, your engine won't start? Best you take it out of the boat then so we can see why it won't start".
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Post by Deleted on Feb 22, 2019 21:48:44 GMT
A "serpentine belt" is technically a poly vee belt as it has multiple "v" profiles side by side.
A "toothed belt" has teeth across it because it is used in situations where the drive sprocket rotation must be exactly geared to the driven sprocket. Like timing belts.
There are vee belts which are made with the impression of having "teeth" but they do not perform the same function as the true teeth on a toothed belt.
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