Originally Posted by wayne.yl
There are mysterious cracks in the ends caps of my 1992 34ft trailer.
The cracks are located where the face of the oak cabinets join the end cap at both the front and back of trailer. Could this be a result of excessive vibration from worn out axles? I have checked the axles and they still show some life according to the axle test recommended by inland rv. When jacked up the wheels drop 2-3 inches before coming off the ground. I have replaced the tires on the trailer as well. Just don't want to buy 3 new axles unless I need to but don't want to lose the oak cabinets either.
Two things can cause those cracks.
The first is a very hot climate.
The second is vibration.
Sources of vibration are one or more of the following.
Excessive rated tow vehicle.
Excessive rated hitch bars.
Out of round tires.
Unbalanced or improperly balanced running gear.
Any torsion type axle can cause bottoming out issues. If the drop is 3 inches as you tested, then check the torsion arm or trailing arm for proper position, when the trailer is loaded for travel. If it's correct, then the axles are not a part of the problem.
Excessive rated tow vehicles and/or torsion arms, would also usually cause shearing of rivets, both inside and out.