QUOTE: Originally posted by marxalot Thanks for the direction to Portlines. I received the upper and lower finger assembly for the reversing relay, installed them, and the old AF 300 is running fine! If I understood the parts listing, this unit was made in 1946 as it has the brush assembly matching that year. So this unit is 60 years old! With its new contact fingers, brushes, a good cleaning and lube I'd say it is ready for another 60! It looks a little rough but the owner justed wanted it operating again. I'm glad to have helped him...............with your help. Thanks again. Jim
QUOTE: Originally posted by puttlagger Try Fred Jester at Fred's Train Parts. His email is: fredstrainparts@aol.com Also, Vince Amato at Hobby Surplus Sales: http://www.hobbysurplus.com/trainrepairparts.asp Good luck.
QUOTE: Originally posted by Sturgeon-Phish The help is on track. Check brush length and spring length. Brushes at least 3/16"; springs 3/4" max. Commutator should be bright and shiney with out heavy scratches. They can be cleaned up with very fine emory cloth and the ensure the segments are clean. If an excessive amount of oil was applied to the oil wick that will prevent the motor from operating properly. If the commutator end is oily clean it and clean the bru***ubes as well. Also check the motor end bushing for proper seating. It has orientation grooves that if not inserted correctly will raise the bearing surface and cause a problem. Doug at Port Lines is great to do business with. Let us know how the 300 comes along. Jim
QUOTE: The 293 does not smoke in neutral, the drive piston comes off the drive gear.
QUOTE: Also have the old Talking Station, but don't want to wear the record out. Joe
QUOTE: One thing I've found helpful is using the small pen-like applicator of WD-40. (About $2.50)
QUOTE: Originally posted by marxalot Thanks for the info on the parts as I might need more than I first thought! Please read this and see if you can direct me. Okay, I took the 300 apart. The unit would not run at all. When I looked into the gearbox I found where all the old grease had dried up and turned into something like parafin! So I spent about an hour digging this stuff out. I then applied a little oil and then power and got the unit to turn, roughly but it turned. Both in forward and reverse. Good I thought, more cleaning and we should be getting better. I spent more time cleaning the direction relay, gears, etc. Okay I apply power and all I get is the direction relay to operate, the motor will not turn. Well I start looking around and cannot find anything obvious that would be preventing the unit from running. I checked all wiring to see if something has come loose, wiggled the wires when powered up to see if any connection was poor but all seemed fine. I put an ohmeter across the coil on top of the frame (field??) and have continuity. I just don't know what happened here. There was a lot of sparking at the brushes when the unit was operating and it ran a lot slower in reverse but I'm stumped at the moment...
Bob Nelson
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