I fixed my odometer a week ago. The gear on the shaft driven by the worm gear (through the odometer numbers) was not touching the worm gear. I assumed the previous owner had done this on purpose. I pushed it back into place, seemed seccure enough. The gear is not loose on the shaft. Odometer worked great, so did the trip odo.

My odometer stopped working again, same problem.

Will lubricating the worm gear keep it from pushing the shaft away?

here is a picture similar to my setup. This is not my speedo. It shows the worm gear and the geared shaft that keeps being pushed away.

Some have let capillary action suck a drop of Loctite into the interface between
the gear and shaft to lock the gear in place.

__________________
'84 300SD sold
124.128

the gears are tight, the shaft moves.

if the brass gear is moving away from the bracket, and losing contact with the worm gear, it means that the press-on collar on the other end of the shaft is slipping and allowing the shaft to move through it. Take that collar off the other end, and scuff up that other end with the flat bladed screwdriver or a pair of needlenose vice grips. Then reinstall the collar.

Kurt

__________________
- '79 240D - engine swap complete! Engine broken in! 28-31 mpg! Lovin' the ride!
- '86 190D (W201-126) - 2.5 NA engine, 5 speed, cloth interior, manual climate controls, 33-34 mpg (sold to forum member).