Wes1707822506 Posted July 10, 2021 Share Posted July 10, 2021 Train suddenly stopped after running perfectly for 15 mins, tried the 9v battery technique, minimal movement, a mm or two every time you touch the wheels with the battery, any experts know what it could be? Link to comment Share on other sites More sharing options...
JJ73 Posted July 10, 2021 Share Posted July 10, 2021 Is it Brand new or 2nd hand - if it is brand new - send it back to the place where you got it from!!! if is is 2nd hand or old then check it for hairs or clogged up with old oil!!! 🤔🚂🚂🚂 Link to comment Share on other sites More sharing options...
Going Spare Posted July 10, 2021 Share Posted July 10, 2021 If you can quote the catalogue Rxxxx number for the locomotive or its running number, name and livery and whether it is loco- or tender-driven, it will help those who may be able to give suggestions as to what the problem might be and how to get it going again. Link to comment Share on other sites More sharing options...
ColinB Posted July 10, 2021 Share Posted July 10, 2021 It could be a hundred and one things but my favourite for this is the valve gear has got locked. Check that the valve gear screws have not come loose, again the favourite is the centre ones which allows the "keyed" connecting rod to the valve gear to rotate when it shouldn't. Also for some reason on mine the ones on the front wheels come loose and move out to again jam the gear. Finally check the wheels are not moving on the axles. If not any of these, then check the pickups. After this it is body off and start checking the transmission. From what you say to me it sounds like "jammed" valve gear as it was working ok. Link to comment Share on other sites More sharing options...
Wes1707822506 Posted July 10, 2021 Author Share Posted July 10, 2021 2nd hand, 46237, R2553, valve gears seem okay to me, I took it apart last night and cleaned some old nasty gunk and oil, but couldn't see anything blocking the motor Link to comment Share on other sites More sharing options...
Wes1707822506 Posted July 10, 2021 Author Share Posted July 10, 2021 When spinning the gold part of the motor by hand everything spins and wheels move as they should, seems to be a dead motor or power not being delivered? Sorry for my poor terminology (New to the hobby) Link to comment Share on other sites More sharing options...
Going Spare Posted July 10, 2021 Share Posted July 10, 2021 So, is it a tender-drive loco that you have? Can you identify the model please. There have been three major versions of the Coronation: the first had its motor in the locomotive, the second had it in the tender and the most recent reverted to being in the loco, but that used an enclosed motor with no visible working parts so yours is evidently not one of those. Link to comment Share on other sites More sharing options...
atom3624 Posted July 10, 2021 Share Posted July 10, 2021 OK, 'the gold part' I presume is the brass worm drive on the motor shaft?This implies it's locomotive drive (not tender).If you've got that far, you've obviously got the body off - be very careful.Couple of things, but firstly, NEVER forget there are a lot of tiny, very fragile parts - plastic and metal, and never force a screw - you can easily cross thread them / snap the heads off - we've all got the t-shirt - I certainly have!After all that, as Colin mentioned, check the little coupling / piston rod screws - are any of them jamming?Is the motor trying to turn - is it humming? Is it totally 'dead' - no power?Can you see any loose wires?If you place the chassis on the track, no power required, and you ROLL it, and the wheels turn, but the motor doesn't, or do the wheels just stay motionless, and slide as you push?A little YT video of the chassis and scan around the chassis, above, below, and the rods on both sides, with power on, off, could help.Al. Link to comment Share on other sites More sharing options...
Wes1707822506 Posted July 10, 2021 Author Share Posted July 10, 2021 Sorry, I tried posting a reply with images and numbers, but seemed to fail.Its a loco drive R.2553!When placed on the rails under power there is a faint hum, but no motor movement of any kind, with no power and pushing the loco, the wheels stay locked and just slide along the track.Wiring wise, it seems to be DCC enabled? That would be my guess from the chip inside it, and there is one purple wire connected to the loose larger board and not connect to the smaller chip? (Seems strange) the rest of the wires seem fine.Piston rods seem to be fine as when power is applied via 9 vault battery if I apply a slight force to the wheels they will slip a few mm, and I checked and will go all the way round without catching or jamming (This process takes about a minute because it really is a few mm every few seconds I can get them to move)If after this a short video going round the loco with the body removed would still be helpful, just let me know and i'll try and shoot one ASAP.Cheers guys! Link to comment Share on other sites More sharing options...
ColinB Posted July 10, 2021 Share Posted July 10, 2021 After my experiences today, it could be the motor. I have been fitted a Britannia chassis into my old Morning Star. Worked perfectly ok until I resoldered the wires on the motor. It appears that the motor has a loose connection internally and it is not the first one that has failed on me. I was fixing a City of Sheffield for someone and the motor was duff on that one as well. What I normally do with a fault like yours is remove the valve gear but leave the conrods connected and see if it runs. Alternatively disconnect the motor from the gears and first check if it runs ok and then move the wheels by moving them on a flat surface to see if they run smoothly without the motor attached. Link to comment Share on other sites More sharing options...
Going Spare Posted July 10, 2021 Share Posted July 10, 2021 Or a decoder fault ? Link to comment Share on other sites More sharing options...
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