Trip ODO repairs
Posted: Tue Sep 04, 2018 11:13 pm
Nothing here is meant as a slight to Jeff or odometergears.com, he's a good guy and from all I hear produces an excellent product. But sometimes you just want to repair what's there and can.
I first did this on my first E21 when it didn't work with a mere 197K on it. I repaired the gear and last I saw of the car it was dead in a parking lot with 385K on it, suggesting at times this can be a long lasting repair although I lost track of the car when the kids sold it at ~350K. That was the early 90s and to the best of my knowledge there were no replacement gears available then. Anyway, this works if there is a simple crack or split, but not if there is a missing tooth as there sometimes is.
I make a reinforcing ring, I use 1/16 welding rod, a little smaller than the hub size, force it on, then glue it with a drop of superglue. Both sides. Then often it's not tight enough on the shaft so I have to score the shaft with a wire cutters. Pics show the crack and score mark. Plus a close up of my fingers.
I first did this on my first E21 when it didn't work with a mere 197K on it. I repaired the gear and last I saw of the car it was dead in a parking lot with 385K on it, suggesting at times this can be a long lasting repair although I lost track of the car when the kids sold it at ~350K. That was the early 90s and to the best of my knowledge there were no replacement gears available then. Anyway, this works if there is a simple crack or split, but not if there is a missing tooth as there sometimes is.
I make a reinforcing ring, I use 1/16 welding rod, a little smaller than the hub size, force it on, then glue it with a drop of superglue. Both sides. Then often it's not tight enough on the shaft so I have to score the shaft with a wire cutters. Pics show the crack and score mark. Plus a close up of my fingers.
