How to adjust "set screw" in Lionel motor?

Dave45681 posted:

I think you need a small (sorry, don't know size off the top of my head) Allen key or jewelers screwdriver with a similar hexagonal head.

-Dave

That is correct. Once removed you can put a drop of oil in the hole. Usually after inserting the screw, screw till bottoms out then back off. The amount varies but 1/4 to 1/2 turn may do it. You should be able to spin the wheels with your thumb when correct. This is how I adjusted the armature play on the 1980’s SD 40’s. 

Rod Miller

Why is this set screw used on some motors and not on others ?   

Dan Padova

 

"In the course of my life I have had to eat my words, and I must confess it was a wholesome diet"..........Winston Churchill

                                                                                                                                        

So there's no need to have any adjustment screw in the motors that have the brass tongue and oil wick ?

Dan Padova

 

"In the course of my life I have had to eat my words, and I must confess it was a wholesome diet"..........Winston Churchill

                                                                                                                                        

The purpose is to stop armature bounce . It shouldn't be tight, but rather just barely not making contact. i.e., touching, then backed off till the armature spins free. How you stop the bounce; by shim or screw really makes little difference.

"Still trying to not shoot my eye out"

 

"Nursing insomnia one railcar at a time"

My aroma therapy? Smoke Pellets.

 





Dan Padova posted:

So there's no need to have any adjustment screw in the motors that have the brass tongue and oil wick ?

The motors which lack a set screw have a pair of ball thrust bearings between the worm gear and the armature, one one each side of the bronze sleeve motor bearing. The F3/GP motor is of this design as is the GG1/cast-frame-NW2.

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