The first step is to drain the hydraulic fluid. I drained most of mine. Not a bad time to replace the fluid and filter after finishing this project. Next take a good look at that parking pawl nut.
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thanks for the info, one of the washers called for a quad ring that I have been unable to locate. I have found a few other people who have used the same orings without any issues. I did though take the washer that you mentioned off and cleaned it and re-install it. Its the washer in your second picture.Okay just some info for you that may be helpful ,it may or may not make a difference. First the "nut" at its base is tapered, there is supposed to be a thin metal race or washer that goes on it to take up the taper and I believe prevent over tightening and galling of the threads. Second an o-ring is a o-ring is a .... not. These are ribbed outer or concave center o-rings originally,I agree with Ed (Husky) a square cross would be close to original ,tried to show this info in the following pics, maybe Todd (Classic Bolens) can shed some light on the subject, if he doesn't catch it here, perhaps a PM.
fantastic, how much for a quad ring?Typically when the parking pawl is engaged, the hydro fluid will soak the inner o-ring providing needed lubrication to the parking pawl and bushing. The quad ring essentially act as a back up ring or a piston to push the fluid back into the hydro unit and stopping any leakage. The idea is it allows for dynamic sealing, with limited friction. The #111 o-ring is a very close match to the original 1720312 o-ring, but I believe it is a little thicker diameter than the OEM. You may get lucky using only the o-rings. Many times the second o-ring is too tight and will pull off of the parking pawl over time and leak again. If your pawl and bushing have enough wear, it may not pose an issue. If you replace the pawl with a new one, typically using both o-rings makes the unit too tight to operate properly.
I have the 1719870 quad rings in stock if needed, as well as the new parking pawl, o-ring and seal washers.