Hornady LNL AP press primer feeder cam PROBLEM

[Mentiroso]

So, I am reloading and have become frustrated by the primer feeder cam (the rod the guides the feeding of primers) keeps falling off. I thought it was not tight enough, so I tightened it but it keeps falling off at the bottom where the spring is. Could it be a loose/worn spring that holds it in place?

[DougMurray]

That lower spring is pretty strong. If I'm guessing right, the rod keeps popping off toward the shell plate and not the other direction, right? If so, the problem is due to something restricting the primer shuttle from moving back to pick up another primer as the ram is raised. This has happened to me several times and each time it was due to powder getting under the primer seating pin and keeping it from dropping down to its resting position when the ram begins to raise. As a result, the pin sticks up a bit and catches the shuttle preventing it from moving back as it is supposed to. That pops the rod loose from the spring and is a safety measure that keeps the situation from damaging the press.

Pull out your primer seating punch (#26 in your LnL parts list) and blow it clean with some compressed air. Make sure it is free of any debris and moves smoothly. Reassemble and I'll bet your problem goes away.

The plastic arm that holds the top of the rod can break if you don't properly address this problem. Ask me how I know this. :-(

[chevy95]

Guys

Below is a link to highboy76's instructional vids on the Hornady priming system. Check it out it may help - if it does please let me know. When I get the bucks to get a Hornady LNL, I'm going to review his vids.

https://www.youtube.com/watch?v=w6BfPn5QaiA

[JagerDog]

Are you talking about the axle/roller that follows the cam/guide wire? I superglued the axle in.

[Jmoreno88]

as stated i would give it a good cleaning. I had that issue once and ended up breaking the little black plastic mount on the top but I guess that's why they send you 2 ha. I had debris on the track throwing it off

Sent from my SM-G928V using Tapatalk

[Mentiroso]

That lower spring is pretty strong. If I'm guessing right, the rod keeps popping off toward the shell plate and not the other direction, right? If so, the problem is due to something restricting the primer shuttle from moving back to pick up another primer as the ram is raised. This has happened to me several times and each time it was due to powder getting under the primer seating pin and keeping it from dropping down to its resting position when the ram begins to raise. As a result, the pin sticks up a bit and catches the shuttle preventing it from moving back as it is supposed to. That pops the rod loose from the spring and is a safety measure that keeps the situation from damaging the press.

Pull out your primer seating punch (#26 in your LnL parts list) and blow it clean with some compressed air. Make sure it is free of any debris and moves smoothly. Reassemble and I'll bet your problem goes away.

The plastic arm that holds the top of the rod can break if you don't properly address this problem. Ask me how I know this. :-(

Doug, you nailed it. I did have powder spill when the press did not pickup a primer. This probably the source of my frustration. Fortunately, the press is boiled down. I almost went incredible hulk on it.

[Kmai24]

I know this defeats the purpose of progressive loading but I've moved onto priming off press (I have a LNL as well). I only load on the weekends so during the week I hand prime any where between 3-500 cases. Since I've moved on to hand priming I haven't missed a case without a primer and the initial "reloading" goes fairly quick and smooth without much tweaking if any. If you have time or strapped for time and have to break down your reloading into sessions, look into hand priming.

[Michael in California]

Also, Hornady has a new primer punch design that is less prone to fouling with powder. Call them up and they will send you one or two if you don't have the newer design already.

[Mentiroso]

Below is a link to highboy76's instructional vids on the Hornady priming system. Check it out it may help - if it does please let me know. When I get the bucks to get a Hornady LNL, I'm going to review his vids.


https://www.youtube.com/watch?v=w6BfPn5QaiA

I have watched the video, it is very good and worth watching. Whoever, it does not address the problem I am having.

[Mentiroso]

I know this defeats the purpose of progressive loading but I've moved onto priming off press (I have a LNL as well). I only load on the weekends so during the week I hand prime any where between 3-500 cases. Since I've moved on to hand priming I haven't missed a case without a primer and the initial "reloading" goes fairly quick and smooth without much tweaking if any. If you have time or strapped for time and have to break down your reloading into sessions, look into hand priming.

I do hand prone with my rock chucker. The problem I found is that primer depth is inconsistent. I do not like that and thought the press would solve that.

[Mentiroso]

Also, Hornady has a new primer punch design that is less prone to fouling with powder. Call them up and they will send you one or two if you don't have the newer design already.

Michael, I will. Thanks!

[stilly]

How does anyone get powderspill using a LNL or Uniflow drum type of dropper?

In 6500 rds I had it happen ONCE when I fought with the indexing and double charged a 9mm on the loadmaster.

[Mentiroso]

How does anyone get powderspill using a LNL or Uniflow drum type of dropper?

In 6500 rds I had it happen ONCE when I fought with the indexing and double charged a 9mm on the loadmaster.

The shuttle did not pick up a primer, so as I cycled the press powder as spilling out the primer hole.

[Mentiroso]

That lower spring is pretty strong. If I'm guessing right, the rod keeps popping off toward the shell plate and not the other direction, right? If so, the problem is due to something restricting the primer shuttle from moving back to pick up another primer as the ram is raised. This has happened to me several times and each time it was due to powder getting under the primer seating pin and keeping it from dropping down to its resting position when the ram begins to raise. As a result, the pin sticks up a bit and catches the shuttle preventing it from moving back as it is supposed to. That pops the rod loose from the spring and is a safety measure that keeps the situation from damaging the press.

Pull out your primer seating punch (#26 in your LnL parts list) and blow it clean with some compressed air. Make sure it is free of any debris and moves smoothly. Reassemble and I'll bet your problem goes away.

The plastic arm that holds the top of the rod can break if you don't properly address this problem. Ask me how I know this. :-(

So, I took my press apart. The primer shuttle is worn at the end from striking the primer arm. When the handle is up in the stowed position not activating the primer press, the primer arm sticks out high enough that the primer shuttle strikes it moving forward and catches it when trying to travel rearward. I wonder if the spring that counters the weight of the handle (the one under the plate is worn). Can I adjust the height of the primer arm? I remember now that it can be unscrewed. Maybe when I cleaned it I installed it too loose/tight causing it to stick out further than it should.

[Michael in California]

You need to clean it. It should not be proud of the surrounding surface. The punch is not returning to its proper position.

Post pictures.