[darko]

Next challenge is to figure out what to do with the parking pawl motor. The leaf-system won't run without it connected, AND needs it hitting a stop at something like 30 degrees rotation both directions. I eventually want to use this to hold the tractor from rolling. I'm thinking of using the, now vacant, mounting hole where the ICE starter motor went. Having the parking motor turn a lever that engages some teeth that mesh with the flywheel ring-gear.

The shaft that goes into the parking-motor has splines which means either using the shaft from the gearbox, or hopefully I can get a machinist to make something. If I can get something made I'll go that way so I can get it the length I want, etc.

Here is a first-grader drawing of what I have in mind, and picture of the starter hole it would go into:

Another thought would be something like how the starter motor worked - a spiral splined shaft that would engage a small stationary gear into the ring-gear. Unfortunately the tractor didn't come with the starter (my guess is they removed it to hide the fact that the engine was seized...) Otherwise I may have been able to use parts out of it for this.

Anyone have other thoughts on how to do this?

First I'll get a splined-shaft made and hopefully I can at least get a defeat-mechanism in place so I don't have to keep the gearbox attached just to run the system.

 

[darko]

I created a bracket to hold a shaft going into the parking pawl motor today. I created the shaft from a 1/2" bolt - using my drill press and machinist vice with a carbide cutter to shape a rectangle on the end that will fit into the splined end of the motor. The rectangle ended up being 7.44mm X 6.2mm. It had a little play, so perhaps one of those dimensions is a little small. I did a heat treatment on the end just in case the corners were not strong enough to hold shape. This little gear motor is pretty darn strong as I found out trying to hold the shaft with some vice grips.

Not sure how yet how it will mount on the tractor to hold the flywheel. But not important right now, just wanted this bracket in place to allow the VCM to to operate the motor without the gearbox.

Some pictures and a video:

Video of it operating, and my rambling about it: