I was given a 736 Berkshire loco with a 2046W tender. Got them cleaned and lubed, but had to replace the rollers because they were deeply grooved. I put on new sintered-iron rollers made sure they had freerotation. When I tested the loco the front roller seems to spark more than it should and the rear roller is not sparking, not sure why front sparks and rear does not but help is needed.
Maybe check the spring tension on the arms pushing the rollers down to the rail to see if they are the same and clean the drive wheels so they get good current flow. Al
Oh, and I forgot to say, congrats on a great gift of an engine, the Berkshire loco is one of the best. Love the gear drive linkage on them. Great pullers and lookers.</
Thanks KRM and Firelock76, I looked at the roller and collector arm took it off and cleaned the brass contact, wheels and cleaned track again. The 736 did spark less so I think it is a matter of crud. I did replace the rollers because of the deep grooves, thought that was a bad thing I still have them so I could put them back on. I also have a question about motor servicing. I could not find anything on what lubes to use and where to lube. I am used to AF loco and know them well. The Lionel motor is a little different and I do not want to mess it up. Is the motor suppose to have an oil felt on the brush end of the armature and what is the hole for above the armature shaft on the other end?