In Reply to: Re: Ford 8N tractor starter won't disengage, Positive Drive type posted by Tim Daley(MI) on March 09, 2020 at 03:15:13:
Thank you for your reply.
1. Front mount distributor.
2. 12 volt converted system.
I agree throwing money and parts at tractor is not the best way to get repair results.
Checking wiring to eliminate electrical (for example, stuck starter solenoid could cause "starter does not disengage") as the cause, so far everything checks out.
Using search of forums "starter Bendix not retracting" has yielded results of other folks facing the same difficulties, good to find remedies from other's experiences.
Presently pursuing removing Bendix from starter shaft, meticulously disassembling/cleaning (especially spiral grooves), using dry silicon lubricant (spiral grooves must be spotlessly clean as per "Dell", with no lubricants to attract dirt into spiral grooves), and checking condition of springs (if springs have lost strength, alignment/position or integrity, it is enough to throw inertia off to where Bendix may not retract)
Some manner of added friction in the wrong place (spiral grooves), and loss of friction (Springs, etc) could adversely effect inertial operation, causing some "tail chasing" and head-scratching.