Attn: Bighorn 3750FL Owners. Structural Flaw?

[dieseldogsdad]

I have a 2015 BH 3750FL and right under both rear slides in the corners the walls are delaminating. One side has actually started to crack the fiberglass. This seems to have progressively gotten worse over the past couple years. I have only ever crossed paths with one other owner of this model and his was a couple years newer, but his looked like it was starting to delaminate in the same area. I have always inspected the caulking. Last summer removed all the old caulk and recaulked the entire rig with Lexel. It doesn't appear to be a water intrusion issue and if it is I have no idea where it would be coming from. The crack really makes me thinkit may be a structural flaw since there is very little wall structure due to slide and storage compartment cut outs. Are any other 3750FL owners experiencing this?

 

[danemayer]

I'd hazard a guess that when water runs down the seal, some is going inside in those corners.

 

[Garypowell]

We don’t have your model but have had frame flex on our 2013 3010 RE. Heartland stepped up both times and fixed it.....no new problems.

we had to prove to them via pictures and a video the problem existed.

I could be wrong but I think the real proof comes from watching these cracks (and other areas too) as you hook an unhook the truck. If there is differential movement you have a frame problem.

if you see no movement it is probably water intrusion damage....and I don’t think HL will help....but it would not hurt to call them.

 

[Fox]

I have that (2017) model Bighorn; I haven't given it a serious eye-balling but I haven't noticed anything similar.

 

[Ram3500Longhorn]

I have a 2015 BH 3750FL and right under both rear slides in the corners the walls are delaminating. One side has actually started to crack the fiberglass. This seems to have progressively gotten worse over the past couple years. I have only ever crossed paths with one other owner of this model and his was a couple years newer, but his looked like it was starting to delaminate in the same area. I have always inspected the caulking. Last summer removed all the old caulk and recaulked the entire rig with Lexel. It doesn't appear to be a water intrusion issue and if it is I have no idea where it would be coming from. The crack really makes me thinkit may be a structural flaw since there is very little wall structure due to slide and storage compartment cut outs. Are any other 3750FL owners experiencing this?

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Dieseldogsdad I am wondering if you got anywhere further with this issue?? I am about to buy a used 2015 bighorn 3750FL and the passenger side has a 4” long crack in the same spot the forward corner of the rear slide should I steer clear of this rig? Or is it a minor issue? Thanks

 

[bh3585]

RUN!!!!!!

 

[rhodies1]

DON”T touch it..get your feet in gear and run

 

[sengli]

To me that looks as if the aluminum structure in the laminated wall, supporting that heavy slide is failing under the fiberglass skin. If it were just delam going on I wouldnt expect to see the wall cracking like that.