LGB V52 Motor died?

M

matthew

Registered
Well after a successful couple of hours running tthis morning, i went to run the V52 from its siding and it wouldnt move. On closer inspection one motor was spinning fine and the other motor was not turning.

I took the loco apart and there were no loose wires, and there didnt seem to be anywhere that had wires that had burnt. im certainly no expert with loco repairs but there didnt appear to be anything out of place, so any ideas?
 
Remove the offending motor block and lash up a pair of wires from a controller to the motor. The motor wires are the outer pair of a three or four wire block.
If the motor doesn't turn take it out of the block and try again with the wires connected directly to the motor itself.
 
First thing I'd suggest is to pull out the questionable motor from its gearbox and see if it runs when power is applied directly to its terminals. What era of V52 is it, old clamshell gearboxes or newer sandwich type?
Actually, come to think of it, I don't think I've seen a V51/52 with clamshell boxes.... had the gearbox type changeover occurred before the first version of that model was released?

Jon.

Edit: Neil posted while I was still typing..... ;)
 
Thanks for that guys, don't know why i didnt think to do that while i had it apart. I will have a check over the weekend. I presume that it will require a new motor if it doesn't work when directly connected.

And Zerogee, it's only a relatively recent model, 4 years old now i think.
 
matthew said:
I presume that it will require a new motor if it doesn't work when directly connected.
Click to expand...

Not necessarily, it depends what's wrong with it.

It's a little time consuming but motors can be serviced. Sadly the details of how to appear to have been deleted from this forum.
 
matthew said:
Thanks for that guys, don't know why i didnt think to do that while i had it apart. I will have a check over the weekend. I presume that it will require a new motor if it doesn't work when directly connected.

And Zerogee, it's only a relatively recent model, 4 years old now i think.
Click to expand...

If it's that recent, is it a DCC-chipped model or an analogue one?

Jon.
 
Not trying to hijack your post Matthew but a different problem has cropped up with my V52(251).
When bought s/h about 5yrs ago it ran around curves as if it was running on a threepenny bit ie in jumps. Mike kindly remedied that and it has run perfectly ever since. Until a few weeks ago when one bogie would jump off the track even on the straight. Put it into reverse and it runs normally. I have had the 'lid' off but can see nothing amiss.
it has me stumped.
Has anyone else had this problem?
 
It's an analogue model, will have a play about with the motor this weekend and if it still doesnt want to play i shall have a delve deeper into servicing the motor..
 
I have a V52 with very similar problems. I've stripped the offending motor, cleaned the block and pickups but the issue keeps coming back. Will swap the motor blocks today to see if it is the circuit board or not. I'll let you know what I find. There wasn't any excessive grease in the motor and it draws just over 1/2 amp when both motors do operate. More than just a little frustrating.
 
interestingly enough, i seem to recall that this may have happened some time last year, where the loco died but then just began running as normal again, but i cant remember if that happened or im thinking of something else... There did seem to be at lot of excess grease in the problem motor when i took it apart.
 
Neil Robinson said:
Not necessarily, it depends what's wrong with it.

It's a little time consuming but motors can be serviced. Sadly the details of how to appear to have been deleted from this forum.
Click to expand...
What - this thread? http://www.gscalecentral.net/electric-locomotives-trams/lgb-motor-service/

or this one? http://www.gscalecentral.net/electric-locomotives-trams/lgb-motor-repair-and-testing/
 
Right, i have earlier today cleaned out the dead motor, removed plenty of excess grease and it is now operating fine again. I just seem to have made a mistake somewhere down the line...Both motors run in opposite directions. I thought this would be an easy fix by just turning the motor block around, this the makes both motors run in the same direction as they should when power is applied one set of pickup skates. But then when i place the loco on the track, with having the drive block switched this must be shorting the loco as it then wont run.

I cant work out what ive done wrong!!
 
Sounds to me that you have crossed the motor block track (and possibly motor) connections round on one motor block.
 
Mark beat me to it.. I was typing the following:

Do you have 4-pin connectors on the motor-blocks?
Do you have moulded connectors at the 'board' end, or individual push-on connectors?
Are your motor-block to board wires colour-coded, or all black?

I have found (many) of the twin motor-block LGB loco's have one block running forwards, and one backwards. - Motor-blocks all appear to be identical, so if yours have pins at (say) the inner-end of the two blocks, then one will need to be wired the other way round..
You can do this with the connector at the block end.
Then test with a meter that the skates on the same side of the loco make contact.
 
If you have removed the motor you have probably replaced it upside down. It will then go the wrong way.
 
Thanks guys...As soon as i read marks post i instantly knew what i had done wrong...Stupidly simple mistake to make.

I thus corrected the problem and for the last 40 minutes or so have let is run around the track on it's own. The same problem has now happened again, the motor has just stopped working. Having removed the motor block again, it is very hot indeed, as well as all the surrounding plastic being VERY warm too..

Any ideas where i go from here?
 
Did you clean-up the commutator / brushes at all?
Were the brushes very worn? - could be conductive 'gunk' between the windings, hence more current being drawn, and heat generated??
 
Can't seem to have much luck with this motor at all. ive just re-stripped it to give it another good clean, cleaned down the grooves on the communicator also. It's still drawing 1amp running at 10Volts whereas the other working motor runs at 0.3amps at 10 volts. i did notice a slight sparking from the communicator inside the motor when running
 
Some you win, some you loose..
I think I would now cut my losses, and buy a new motor..
 
Think that may be the best option now. Is it sometimes the case then that a motor can still run but be knackered? I just can't get the current draw down at all no matter how clean everything is.

The motor that's in there currently is the older type, 88mm long and has no ball bearings in. So i presume this is the motor i need?
http://www.dragon-gscale.co.uk/lgb-e126050-standard-motor-with-short-shaft-was-lgb-62201-5310-p.asp

Also just checked in it's service book and it states replacement motor as 62201 so that seems to be correct. Is it just a straight swap over?
 
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