Post by rbturner on Mar 9, 2018 9:51:02 GMT -5
This is a story for all who love GOO
A few days ago I received a BLI fancy loco from a customer to repair. I was told it would not move but would start up and that the new gears were with it.
A quick test revealed it would make sound and the motor was running but it surely would not budge.
I pulled the lead and trailing trucks off and removed the bottom plate. I lifted the rear driver and found one of the springs missing. So, someone else has been in here before me. RED FLAG!
I pulled the next driver, it had the drive gear on it. It looked OK so I took the screws out of the main drive rods and got the driver out. I rotated it around and saw the problem. There was semi-circle moon shape ground out of the gear. I had never seen a gear torn up like this so as I looked closer I saw there was also a crack at the bottom of this damage.
So I got the puller out and pulled one wheel. Next I pulled the brass bearing off and went to the gear. I then noticed some kind of stuff on it that I had thought was grease. Not grease, it was GOO. The main gear had broken, someone took it apart losing the driver spring and then tried to fix the crack with GOO. In the process of fixing the gear they also glued one of the brass bearing to the axle. No wonder the gear was ground out. I figured sure the grinding gears were shot too but they seemed OK on inspection.
For the next 20 minutes I worked with acetone and lacquer thinner getting all of the GOO off of the axle and the bearing. Lots of fun too!
So I drilled out the center of the replacement gear to a size that was only a few thousandths of an inch smaller than the axle and put it on. I re-quartered the drivers and then took a pair NWSL suspension springs and drilled out the holes in the frame under the rear driver so they would fit.
I got it all reassembled and it ran fine during the road test.
Gimme more GOO!
A few days ago I received a BLI fancy loco from a customer to repair. I was told it would not move but would start up and that the new gears were with it.
A quick test revealed it would make sound and the motor was running but it surely would not budge.
I pulled the lead and trailing trucks off and removed the bottom plate. I lifted the rear driver and found one of the springs missing. So, someone else has been in here before me. RED FLAG!
I pulled the next driver, it had the drive gear on it. It looked OK so I took the screws out of the main drive rods and got the driver out. I rotated it around and saw the problem. There was semi-circle moon shape ground out of the gear. I had never seen a gear torn up like this so as I looked closer I saw there was also a crack at the bottom of this damage.
So I got the puller out and pulled one wheel. Next I pulled the brass bearing off and went to the gear. I then noticed some kind of stuff on it that I had thought was grease. Not grease, it was GOO. The main gear had broken, someone took it apart losing the driver spring and then tried to fix the crack with GOO. In the process of fixing the gear they also glued one of the brass bearing to the axle. No wonder the gear was ground out. I figured sure the grinding gears were shot too but they seemed OK on inspection.
For the next 20 minutes I worked with acetone and lacquer thinner getting all of the GOO off of the axle and the bearing. Lots of fun too!
So I drilled out the center of the replacement gear to a size that was only a few thousandths of an inch smaller than the axle and put it on. I re-quartered the drivers and then took a pair NWSL suspension springs and drilled out the holes in the frame under the rear driver so they would fit.
I got it all reassembled and it ran fine during the road test.
Gimme more GOO!
