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Post by TonyDunkley on Jun 26, 2018 19:16:21 GMT
Those photo's are just what was needed, Andy, . . . couldn't be better. They've filled in my memory gaps, and everything you're going to need to get at or use for checking if the timing is out, and re-setting if necessary, is all there, . . right down to the open flywheel and the flywheel TDC pointer. Setting the injection timing by spill cut-off is no more than a few minutes work on these engines, and checking to see if it is out by much takes even less time, because everything you need to get at or undo is external and readily accessible, . . unlike the Lister 'S' and 'H' series engines which have everything internal and inaccessible. When you're ready to do the job, give me a call on 07553 294325 the day before to arrange a time that suits both of us, and then I can talk you through everything on the phone while you're doing the job next day. You'll need a jam jar or an empty tin, a bit of chalk/felt tip pen or Tippex, and a few tools to fit the injector pipes, delivery valve holders, the pump drive cover plate on the timing case, and the rocker covers.
TDC etc is clear on the flywheel....
There should be a firing/injection mark near the TDC mark on the flywheel rim as well. It'll be about a couple of fingers widths ahead of the TDC mark, going round the flywheel in the normal direction of rotation. The chalk, felt tip pen or the Tippex I mentioned earlier is for highlighting these marks if they're not easy to see.
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Post by Andyberg on Jun 26, 2018 19:18:01 GMT
TDC etc is clear on the flywheel....
There should be a firing/injection mark near the TDC mark on the flywheel rim as well. It'll be about a couple of fingers widths ahead of the TDC mark, going round the flywheel in the normal direction of rotation. Ill take a look in the morning...the TDC mark is very pronounced so I've probably never even thought or noticed the other.
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Post by Jim on Jun 26, 2018 19:54:33 GMT
Last time I was in Tarleton there was an expert mechanic, he was selling fancy underwear on the street. "Fancy pants for your Mrs. Sir, Diesel Fitter". naughtyfoxJimbo did a terrible funny A pleasure to oblige. It relieves the tedium. Though what it's got to do with the oily Finn I don't know. Actually, I enjoy the engine stuff, man of many talents, done spill timing on a Leyland FG with converted Luton Box in the past. and once handballed the lumps off the crank, fly pitched in a car park in Corwen, after a partial seizure. Flat on my back underneath, dropped the sump, con rod ends off, new shells, engineers blue and elbow grease, a small file and emery tape. It got us 80 miles home. Had to do the same a few years later with a converted ambulance commer walk through in Somerset. That got us home via Symonds Yat and the borders. Started knocking again a mile from home! Both engines were then stripped, fettled and re built. Don't try that on a boat lads, you'll get drowneded. Note to self: Avoid such disasters by changing oil and filters daily.
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Post by naughtyfox on Jun 26, 2018 21:02:19 GMT
Last time I was in Tarleton there was an expert mechanic, he was selling fancy underwear on the street. "Fancy pants for your Mrs. Sir, Diesel Fitter". naughtyfox Jimbo did a terrible funny Yes I saw. Bell ringing practice for Pirkko at Gargrave 5-6.15pm, and I was asked to go and ring at Skipton 7.30-9pm. Packing now for The Dales Way, orf to Ilkley in the morning for the start. 2 or 4 days, we'll see how it goes.
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Post by naughtyfox on Jun 26, 2018 21:07:18 GMT
A pleasure to oblige. It relieves the tedium. Though what it's got to do with the oily Finn I don't know. The tedium is your jokes.
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Post by Andyberg on Jun 27, 2018 5:16:07 GMT
TDC etc is clear on the flywheel....
There should be a firing/injection mark near the TDC mark on the flywheel rim as well. It'll be about a couple of fingers widths ahead of the TDC mark, going round the flywheel in the normal direction of rotation. The chalk, felt tip pen or the Tippex I mentioned earlier is for highlighting these marks if they're not easy to see. Markings on flywheel...1 TDC...no injector marks...
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Post by Andyberg on Jun 27, 2018 5:20:30 GMT
Then other TDC at 180' for piston 2 has injection mark, plus pic of flywheel/engine ID? So no pump timing mark on piston one but clear mark on piston two! If Monday lunchtime-ish would be ok for you Tony, that would be great for me...Ill call you Sunday if so, to arrange! Cheers.
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Post by TonyDunkley on Jun 27, 2018 8:01:42 GMT
There should be a firing/injection mark near the TDC mark on the flywheel rim as well. It'll be about a couple of fingers widths ahead of the TDC mark, going round the flywheel in the normal direction of rotation. The chalk, felt tip pen or the Tippex I mentioned earlier is for highlighting these marks if they're not easy to see. Markings on flywheel...1 TDC...no injector marks... Have you got any bumpf about the engine - handbook or manual - giving static injection timing in degrees BTDC, or is there any info stamped anywhere on the injection pump body or plate ? Once we've got a figure for firing/injection in degrees, we can easily convert that into inches on the flywheel rim.
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Post by TonyDunkley on Jun 27, 2018 8:14:53 GMT
Then other TDC at 180' for piston 2 has injection mark, plus pic of flywheel/engine ID? So no pump timing mark on piston one but clear mark on piston two! If Monday lunchtime-ish would be ok for you Tony, that would be great for me...Ill call you Sunday if so, to arrange! Cheers. Yes, . . . looks like a static injection timing mark to the left of the TDC marks in those photo's. When the engine's running is the rotation anti-clockwise looking from the flywheel end ? One slightly odd thing about what looks like a part number stamped on the flywheel rim is that a '4YC' is a 4-cylinder water-cooled Ruston engine with the same bore and stroke as a YDA but slightly different pistons ! I wonder if what you've got there is an ex-standby generator fixed speed engine that's been converted to variable speed with a different injector pump (complete with built-in governor) and a lighter flywheel. Do you know anything about it's history, and do you know what off-load rpm it's governed to now ? Engines from the same range but with differing numbers of cylinders, speed ranges and maximum rpm settings usually require differing static injection timing settings.
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Post by Telemachus on Jun 27, 2018 8:17:09 GMT
Presumably the timing can’t be set individually for each cylinder so surely the one timing mark is adequate?
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Post by TonyDunkley on Jun 27, 2018 8:56:08 GMT
Presumably the timing can’t be set individually for each cylinder so surely the one timing mark is adequate? I know what you're getting at , . . but you haven't phrased the question very well. One flywheel injection mark, whichever cylinder it relates to, is certainly all you need to time the type of injection pump that Andy's got correctly, provided of course, that you're relating it to spill cut-off at the corresponding pump element. Injection timing is invariably set individually for each cylinder on every diesel engine , . . it has to be, and it's called pump 'phasing'. In an integral cam, multi-element pump such as is fitted to Ruston YDA series engines the 'phasing' is adjusted and set when the pump is being tested and calibrated after assembly, on engines such as the Lister 2 and 3 cyinder 'H' series and the JW and JA 6's with single element injector pumps the timing, and therefore the phasing included in the same operation, and pump delivery/stroke calibration have to be adjusted and set for each individual cylinder on the engine itself.
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Post by thebfg on Jun 27, 2018 9:48:54 GMT
it always amazes me how people know so much.
only because I struggle to remember.
I can strip an engine but bugger if I can remember what I did to help other people after wards.
hope you get it sorted.
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Post by Telemachus on Jun 27, 2018 12:14:40 GMT
Presumably the timing can’t be set individually for each cylinder so surely the one timing mark is adequate? I know what you're getting at , . . but you haven't phrased the question very well. One flywheel injection mark, whichever cylinder it relates to, is certainly all you need to time the type of injection pump that Andy's got correctly, provided of course, that you're relating it to spill cut-off at the corresponding pump element. Injection timing is invariably set individually for each cylinder on every diesel engine , . . it has to be, and it's called pump 'phasing'. In an integral cam, multi-element pump such as is fitted to Ruston YDA series engines the 'phasing' is adjusted and set when the pump is being tested and calibrated after assembly, on engines such as the Lister 2 and 3 cyinder 'H' series and the JW and JA 6's with single element injector pumps the timing, and therefore the phasing included in the same operation, and pump delivery/stroke calibration have to be adjusted and set for each individual cylinder on the engine itself. Yes granted. I meant “doesn’t need to be /can’t easily be set individually by the user” Out of interest how far out does injector timing have to be before it won’t fire at all? I would have thought quite a bit for an otherwise healthy engine. presumably it’s a 180degree crank for balancing (sounds like it) as otherwise only 1 timing mark would be needed for both cylinders, each firing near alternate TDCs
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Post by Deleted on Jun 27, 2018 13:33:03 GMT
I had another look at the photos and it looks to me like number 2 exhaust valve has broken off.
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Post by Deleted on Jun 27, 2018 17:13:52 GMT
Last time I was in Tarleton there was an expert mechanic, he was selling fancy underwear on the street. "Fancy pants for your Mrs. Sir, Diesel Fitter". naughtyfoxJimbo did a terrible funny Diesel fitter. "These will fit her" Its great.
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