Zippered another tire bringing it up to 120psi from the 70psi it was at. Glad I have a remote chuck and gauge assembly to inflate large tires as that sumbitch was LOUD inside the shop when it come unglued. 2nd of five 18ply "Hankook" branded tires which I installed several years ago that have exploded with no load on.
Was hoping one of the aged Dunlop branded tires would have let go as it's a 14ply, older yet, and getting thin on tread life. These Hankook T06 tires are still at about 90% but near or better than 20 years old so no real loss due to aging.
The R-12 relay valve is replaced and brake release operation is now normal. The other valve was still dragging the rear brake axle 20 seconds after the brake, or treadle valve was released in the cab. Brake application was immediate, but release was far too slow. I had one of these in my cabinet so no problems there.
Inner "Stemco" seal leakage has saturated the brake shoes. Don't know if I can clean them up or not but certainly going to try. Mineral spirits followed by a very hot water rinse does wonders for this compromise. I had Lucas synthetic hub oil installed and man is that crap sticky to the bearings. Just like it's supposed to be I'd wager but it kept the bearings lubricated as there is no damage there I can see. The trailer has Standard Forge axles and kinda getting hard to get parts for at times. I had these shoes relined about four years ago as they had no cores to build up.
