Just like the one on my '78 in my avatar.

 

Might want to consider drilling a drain hole on the underside of course,near one of the ends.

 

I noticed my bumper weeping thru a small hole which obviously began on the inside. Drilled an 1/8" hole and watched it pee for a couple of minutes.

 

Condensation must be the culprit but I haven't looked at the winch mount holes to see if there's a bushing in them....doubt it.

Just like the one on my '78 in my avatar.

 

Might want to consider drilling a drain hole on the underside of course,near one of the ends.

 

I noticed my bumper weeping thru a small hole which obviously began on the inside. Drilled an 1/8" hole and watched it pee for a couple of minutes.

 

Condensation must be the culprit but I haven't looked at the winch mount holes to see if there's a bushing in them....doubt it.

 

I bet the moisture is getting in from the bottom of the winch mount holes. There is a bushing welded in to each hole, BUT they are only welded in at the top, so the bottom is somewhat open. Those bumpers are only 1/8" thick, so you might want to see if you can shoot some Rust Doctor or other rust converter in there, then weld any openings solid, so it will be completely sealed.

 

-Bill

Eesh.

 

I went over mine pretty well when I painted it... but never thought about drilling drain holes, as I assumed it was a sealed unit. :-\

 

Thanks for the heads up Paul.