JCR-1 wrote:
Everywhere I read that the proper way to jack up a single axle trailer is by using the chassis frame rail. They (manufacturers) and industry never recommend the axle for a jack point even if you use the spring perch. I just wonder why the end of the axle is not the best or even suitable by their recommendations. I believe these axles are cambered and to lift even by the perch may stress the curvature to a negative or flatter arc and may reset the arc unfavorably. ??????
Im not sure if this applies or not but it might be because the spring hangers could bend if they are too long?
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/24796694.cfm