pin box adjust?

[stew]

Hello Forest River Owners,

I’m wondering if other folks' pin box Mount on their trailer is like mine.

The front of my 07 All Am Sport Fifth wheel rides high when hooked up to my 04 4x4 Chevy dually. The trailer is not level.

Here is a picture of my Trail Air pinbox Arm where it attaches to the Mount on my trailer.
pinboxArmandMount_zpse2894da3.jpg Photo by stu_2 | Photobucket

You see six well-turned bolts on this side. I put it back the way it was to begin with. That’s what’s in the picture. Still riding high.

I tried unsuccessfully all day yesterday to move the pinbox Arm further up into the pinbox Mount on the trailer. I tried to move it one set of holes, but the holes won't line up. Look at the picture. The hard corner (labeled “A”) hits the rounded part (labeled “B”) preventing to holes from lining up. It does the same thing on the other side.

Evidently I need to cut these two corner off.

Strange thing is, you’ll notice from the picture that the corner labeled “C” is already cut off. Same on other side. Was the pin box Mount installed backwards at Forest River? I ddoubt it…just asking.

Cutting those corners? I have a nice hand grinder, but I’ve never cut anything that thick. Torch?

Fairly big question: If the Mount was installed backwards, have I got any other issues to worry about? Are the holes level or at whatever angle they’re supposed to be at? This seems important.

I appreciate the advice. You guys are awesome.

Stu

[OldCoot]

It appears that the plates are on the wrong side. The corner marked C should be towards the front so that corner will miss the large washer. Rather that cut on the plates, I would just swap them side to side or just turn them over with the rounded corner to the front.

[stew]

Originally Posted by OldCoot

It appears that the plates are on the wrong side. The corner marked C should be towards the front so that corner will miss the large washer. Rather that cut on the plates, I would just swap them side to side or just turn them over with the rounded corner to the front.

Thanks Coot. Those plates are welded to the trailer. I assume from the factory. I'm calling this the "pin box mount". Are the plates backwards?

Anybody else's trailer this way?

Thank you,

Stew

[OldCoot]

Originally Posted by stew

Thanks Coot. Those plates are welded to the trailer. I assume from the factory. I'm calling this the "pin box mount". Are the plates backwards?

Anybody else's trailer this way?

Thank you,

Stew

If they are welded on the trailer, then I would measure the A corner and mark the C corner accordingly and get a few cut-off wheels for your grinder and cut the corners. Not a hard job and shouldn't take 5 minutes to cut both corners.

[stew]

Thank you Coot. That's what I'm going to do. Got 4 thin grinder wheels from lowes. I appreciate your responses, and I'm grateful for the forum. Happy trails!

Stew

[OldCoot]

Originally Posted by stew

Thank you Coot. That's what I'm going to do. Got 4 thin grinder wheels from lowes. I appreciate your responses, and I'm grateful for the forum. Happy trails!

Stew

Take some pictures after you get it done.