finally got my but in gear and fixed/upgraded my steel Kauffman trailer... been needing new hangers and its tracked right couple inches since Kauffman did warranty work 8 month after I bought it... also aligned it.. and two new springs
2 100' laser levels
plumb line and I leveled the trailer left to right with an angle finder.. and found center between the two laser dots.. Kaufman builds the running gear on a sub frame then welds the sub frame to the I-beam.. found the welded the DS 5/8" too far forward.. thrust center line was roughly 5" to the PS at the plumb line.. I didnt bother to check alignment between the two axles
someone bent a spindle at some point... was used around the farm for a while.. ive only over loaded it twice in 7 years ive owned it and it got promptly unloaded...
bought new 82/64 axle that was complete.. and stripped it for the beam, faster and cheaper than waiting for a beam to get made and shipped..
3 different styles of 4,000lb leaf springs.. middle one matched the front... top have 3/4" OD nylon bushing that don't last. bottom one came with the axle.. has a steel sleeve and rubber bushing.. doesn't match the front springs..
it tracks straight and pulls a lot nicer now