How critical are worn bushings? This is a very informative post - I never knew this was an issue. I have been intimidated by leaf spring maintenance after flipping a hanger or two and witnessing the force behind a loaded spring so, does anyone have pointers on how to do this safely? Are the bushings press-fit? Just bang them in? Information please?
Thank you.
YouTube has some good videos.
Etrailer and Dexter have videos.
I just did all of ours. I used the hydraulic system to raise the rig then put blocks under the frame for safety.
I put a floor jack under the axle to support the weight. You can tell by watching the eye of the leaf spring if the weight is off. If you are just doing the bushings, do one at a time.
In my case I took the axles completely off (took coroplast off, did welding work (cross frame support repairs), seal up ALL air gaps and holes through the frame, added extra insulation around the frame and across the entire bottom.
I replaced the leaf springs. The eyes were slightly too small for the bushings to slide through. I had to use a grinding stone on a drill to open up the eyes enough for the new bushings to slide in.
DONT BEAT THEM IN. They will compress and the bolts won't go through. Tried it. Had to use a hack saw blade to cut out that bushing and do it correctly.
To put the axles back up, I tilted the spring up under the hanger then jacked it up (4") until the spring was under the hanger. Then did the same to the opposite side so the axle was level. Then jiggeled and jacked it up until I got the bolt through the hole (grease eye at 9 o'clock) and the nut on it.
Repeat on both axles.
Once one side of each axle is on I used two ratchet straps on each side of the axle and tightened them up. This brings the axles together and let's you put the Equalizer and Shackle bolts in.
When you tighten the bolts, they have splines on the shank. Put a socket over the grease zirc and tap on the head of the bolt as you tighten the nut. This will drive the bolt flush with the metal hanger.
DO NOT TIGHTEN THE HEAD. It has splines. Only tighten the nut.
Torque EVERYTHING.
Torque values are in the Dexter Axle Service Manual in the files section.