Gear for lionel model 2055

Check with  Traintender at  www.ttender.com  about parts for the 2055.

I have a 2065 with the same problem.  I purchased the "correct" pinion per the Greenberg Lionel book, but the teeth were far too course to mesh with the idler gear.  I ended up picking up a used motor from ebay (complete with drive wheels) which finally solved the problem.

I have not yet tried it, but I think a pinion puller for RC cars would be very useful in pulling the pinion (that was what I was going to do before discovering I had the wrong, new pinion).

Thank you for you reply. I have a feeling that I'll be faced with a simular fate. "EBay".

Look in the for sale forum, CHRISTOPHER2035 had or has a complete drop in whole chassis trucks and all for 50 bucks ....That’d be the easiest fix of all for yours....pinion gear swapping can be a real PITA JOB....Check it out, I just saw it there....it’s a few pages back, so keep digging........Pat

The armature with the gear is #675-50 and is available here, here and here.

Removing the gear needs a pinion gear puller, and replacing it needs a press with the proper attachments so as not to damage either the armature or the shaft. Replacement is easier.

Larry

In looking at the service manual there may be room for confusion on this pinion. The early 675 with the 675-40 armature uses the 1668E-43 pinion.  In about 1950 Lionel changes their gear designs from the 12.5 degree pressure angle to the 20 degree pressure angle. The 675-50 armature should have a later pinion, the 2035-132 or the 2035-186.  All these pinions should had an outside diameter of 0.292", the number of teeth is 12, and a diametral pitch of 48.  The only significant difference is the pressure angle on the earlier design and a built in flange of the latest design. 

A couple of quick questions about this loco:

(1) For the benefit of the original poster... can the whole armature be removed without pulling wheels?  If so, this would be much easier than a new chassis OR replacing the pinion gear on the existing armature shaft.

(2) @David Johnston very interesting!  Which pressure angle would you say is "better?"  I.e. which will give the best slow-speed performance, transmit the most torque, etc.?  Why do you suppose Lionel changed it??

I believe the wheels have to be pulled to remove the armature; also try to lubricate the armature shaft at the brush plate; if the noise reduces with the lube, the brush plate armature hole may be  worn and cause the grinding noise; the lube only helps for awhile; a new brushplate eliminates the racket.  The pinion gear can cause noise if the crowns are extremely worn; but not very common.  Falcon70

The change from the 14.5 degree pressure angle to the 20 degree pressure occurred industry wide in the middle of the 20th century. The 20 degree pressure angle gears have a stronger tooth, but are noisier.  The important thing is that mixing gears with the two different pressure angles probably will not work well.  Today if you order a gear, it should be supplied with the 20 degree pressure angle unless something else is specified. 

A model train, slot car or RC car gear/wheel puller would be able to remove the pinion.  The trick is to re-install- NOT by using a sledge hammer (I tried that as a kid) - but to reinstall the pinion straight w/o bending the armature shaft.  Try a C-Clamp.  You can even drill holes (one the OD of the pinion and one the size of the shaft at the non-pinion end) to help. 

INSTCHUCK , just checked mine to make sure but unfortunately the armature does not have the room to come out by itself unlike some other older Lionels.

Did replace the gear on a prewar electric as armature easily came out without removing wheels, cut off the gear on the end carefully with a dremel in several spots and pried it gently right off and used a small socket to gently hammer new one on and works as it should.

One has to be careful though because the shaft running through armature could move and thats not good i was lucky it stayed in place when i put new gear on.

Thank you for your reply. Great information. I was able to remove the armature. I was able to remove one back wheel opposite the gear side and removal was complete. That's as far as I have gone with. I have another answer member that sent me a picture of the device to remove gear. My local Hobby shop is pretty sure they have the necessary tools for removal and reinstall the wheel. Time will now.