Interesting thread ...have learned a lot may have to try the padlock idea on the lift pins at some point.
Have had both lynch pins and R-style cotter pins come out before and in places where I don't need to change it I've gone with safety wire. The lynch pin was on top of caster on my finish mower; fortunately it was one of the rear ones so when the caster fell out it didn't go through the mower. Talked to the dealer to get suggestions and found out that some had the same thing happen, but it went through the mower.... and that some even had bolts with double nuts come off.
That's when it hit me to combine the practice of safety wiring things from aviation to tractors .... and bought this kit:
Safety Wire Twister Kit Kit containes: 04-134SR - Safety Wire Twister, 04-134SR6 - Safety Wire Twister - Mini, 43-020 - Stainless Steel Aircraft Safety Wire
www.aircraftspruce.com
Which makes wiring things shut really simple since wire twisting pliers can make some pretty decent/consist twists in wire.
The R-style cotter pin that came out was on the pin holding hydraulic cylinder to the grapple lid .... pretty sure it was pulled out by a branch. Luckily I found the main pin back (though not the cotter pin) .... and that's when wired the cotter pin closed and onto the main pin.
I figure if the wire can be used to keep the bolts holding airplane propellers in place, then it'd probably work for keeping lynch pins in place on a finish mower. I probably went a bit overboard with the wiring the lynch pins shut on the finish mower (4yrs ago), but I haven't had them come off since. :cool
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