I will preface this by saying thanks for all the info that i am going to be receiving.
My trouble is , i purchased a Lionel 671 and 671w and it is in visually great shape.
But when power is applied it want’s to bind up with an irritating Grinding sound and i can them firmly push the train and it will engage and go for a ride. It does it in both directions.
I have checked to see that nothing was loose inside and it all seems good… Just to let you know my theory is the worm gear is fling the axle to one side or another and causing the binding…But that theary sounds to easy and the remedy seems Far from easy.
I will hate to give up on this loco but i have limited knowledge on Repair.
Take the body off, remove the square metal plate at the base of the motor and inspect the gear. I would not run it till the problem is found as more damage could be done. Remove the old dry grease and redo.
an old fix for too much side to side is to find or make a C clip and snap it on the axle between the wheel and the frame to remove the side to side play.
welcome to the site! the 671 (and all the postwar steamers are pretty easy to fix. lots of good info here. My Turbine had the side to side wheel ovement, so I pulled the drivers off, and used some small washers. a touch of super glue holds the drivers in place of needed, and will still pull off if needed.
Kevin, you didn’t say so, but I assume you lubed everything when you had the loco apart. I always suggest people use 5W-20 motor oil rather than grease as the motor oil won’t get gummy and have to be cleaned out in 20 years.
I oiled all points in as outlined in the Manual and did clean out the 60 year old grease from the grease pit near the worm gear and axle. i manufactured shims to fill the play on either side of the axle gear to remedy the side to side play,and also had to shim the motor,Where it mounts to the chassis(it seems that the motor housing was slightly banana shaped due to age causing a rocking motion)I shimmed up the rear of the housing and this action allowed the worm drive to mesh with the Axle gear. I am very pleased with the way this Turbine is running,this is a very nice engine …NOW!!
just got my new/old turbine running, weirdest thing, received it 3 weeks ago and it wouldnt run, every time i applied power it would short out my transformer, took it apart cleaned and oiled it and it still wouldnt run, just short out the transformer, fast forward a week later and i decide to work on it again, apply power and whammo, a perfectly running engine, no idea what i did lol, but i will not question it ,cheers
My 671 is doing something similar. Very jerky and makes kind of a grinding noise. With motor removed, wheels turn freely and so does armature on the motor. Also, checked the puffer and it is not binding at all and neither are the drive rods. Train has been completely cleaned with all old grease removed and fresh grease applied. Seemed to be running good at first, especially before I disassembled and cleaned. Also seems like this problem has gotten worse from the last time I tried troubleshooting it. Anyway, with the motor in place I can not turn the wheels, however I can turn the armature and the everything moves freely. My axle does have some slop.
Can somebody post a pic of the fix they put together for the axle slop? My guess is that this is a good place to start.
One other thing, I did run the motor by itself grounded to the side of the chassis (may not have been a great ground) Seemed to run pretty good although it did make a slight noise intermittently, This may very well have been my very crude grounding though not making a good circuit.
Just replaced the brushes this morning, no improvement. It’s an eBay engine that I really got a good price on, very good cosmetics and came with a Pennsy 2046 tender. It has the more modern style motor that the 681 has. May be a 671 RR, but the box didn’t say that (assuming it is the original box for this particular engine). Doesn’t have much wear on the rollers so it may not have seen a lot if use over it’s life.
Olsen’s Lionel Train Parts has schematics, for different 671 engines and the # 6200, boiler front decal.
Your video, music, layout and 671 heading the freight cars, are all great.
Yes, I oiled it with Lionel oil as I was putting it back together the first time, spun very freely, motor looks great, too. I’ve never had a post war engine that I couldn’t easily turn the wheels on in both directions.