Trailer pin won't come back out

Get underneath and take a picture of the inside of the pins. There’s a reason why the pin hasn’t popped back out. Usually, it’s a simple fix. If the holes are aligned, pull the handle and try shoving it back in.

 

You should be just fine, it isn’t gonna move.

 

On older trailers, it's not unusual for the pins to have grooves worn into them. Sometimes you can just hit the face of the pin with a hammer and they pop out. Other time you have to hammer/pry from the back to get the groove on the pin to release from slide rail.

As far as driving with 3 of 4 locked, you'll not have any issues unless you get on really uneven ground. Then, it is possible to get the tandems off the track. And it goes without saying the DOT won't be happy to see 3 out of 4, either; although the OOS standard is "More than 1/4 of locking pins not engaged"

You do have a copy of the CVSA OOS criteria, don't you? Every driver should know this better than the DOT does. ftp://ftp.odot.state.or.us/mcarrier/Aspen/North%20American%20Standard%20Out-Of-Service%20Criteria.pdf

 

My old trailer did that. Air slide great when it works, they get old pita. I used to beat them out, They will shut you down for 1 of 4 not engaged.

 

Lock the trailer brakes. Get in the truck and with the truck in reverse, nudge the trailer lightly. This should unseat the pins if they have grooves on them. Tho this was why I had a 3 pound landscaping hammer in the truck.

 

I can tell y’all ain’t no trailer mechanics. Don’t beat the pins with a hammer, that just makes things worse. Call your road service dept and get it fixed right.