Lynch Pins Coming Off

[CausticUrbanCoast]

There are several posts about this but not many recently so a new day means new ideas. When I brush hog a different lynch pin falls off nearly every time. I've brush hogged five times in the last two months and have lost four lynch pins.

Facts: I do have a lot of overgrown weeds and saplings and I do use the HD black lynch pins.

My question is how do I keep them from coming off? I don't care about losing them so much as I do about tearing up my equipment. Chaining them to somewhere on the tractor just keeps me from losing the pin but it doesn't stop the inevitable damage from the pin coming out. Is there a better more secure pin out there other than a bolt and nut? Duct tape? Key rings? Thanks in advance for any and all suggestions.

How much play are you allowing in your arms? And are your pins the largest that will fit?

Edit: and which direction are your pin holes set? Have not lost any on mine in 3 years.
View attachment 703187

 

[the old grind]

I use this type often. They stay on quite well when I'm mowing in the rough.

 

[LD1]

ITs a common issue when mowing brush.

Best thing to do is get a quick hitch.....if all your implements are compatible. Then you never need to remove lynch pins and you can simply use bolts/nylocks instead for the QH pins.

 

[Thomas]

Yet to have problem with snap over type.

 

[CausticUrbanCoast]

Me neither, have worn out a few sets of hairpins on my 3 point though.

 

[joecdeere]

I used to lose a lot of them mowing, started using large “R” pins pushed all the way through so they’re just hanging, haven’t lost one since

 

[CalG]

I use this type often. They stay on quite well when I'm mowing in the rough.

View attachment 703215

The pins for the three point lift arms ball ends really need to offer a flat face to the thrust loads.

Pins configured as in the attached image are not designed for maximum benefit. They do offer Length, which can be useful.

I've lost a few too many pins off the lift arms myself. A fella can sure tear up a bunch of steel if the loss isn't noticed right away.

 

[m7040]

Lost lynch pins on the bucket for the excavator when using it for brush clean up a few times. The Lynch pin on the excavator is significantly stronger than then the regular 3 point Lynch pins. They will fit a regular 3 point if you want to try it. In my case I changed it to bolts with double nuts. No more problems

 

[pmsmechanic]

I used to lose a lot of these on the crazy wheels of my tph mower. If you backed under the evergreen branches to mow the grass, the branch could hook the lynch pin and it was gone. My crazy wheels turn on a 1" shaft so I took a 1" large washer, larger od than a lynch pin. I welded a 1" high piece of muffler pipe to the od of the washer. I then ground a partial circle or V of metal out of the top of the muffler pipe just in one spot. You grind out just enough to be able to slide the lynch pin through the hole in the shaft. Install the lynch pin and give the washer a turn and the lynch pin stays put. I haven't lost one since and I don't need to fool around with greasy wrenches to remove a bolt.

 

[MUDONTHETIRES]

Black tape

Thank you!