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Can you tell where the queaks are comming from?are they at all speeds? When you turn? Go over a bump or what?

Call KZ Customer Service…..perhaps, Matt or your dealer's tech. dept.  Ask if it's okay to grease leaf-spring linkages with high-pressure grease.  John Deere dealers carry high-pressure grease, for example.  My 14RK does not squeak, yet, bet it would be a good idea to lubricate to reduce wear.

John

Mine squeaks as the suspension is comressed past a certain point. Nothing to worry about, as every trailer I towed since 1988 has done this. Main reason is the Shackles to the frame and the front spring bolt are bushingless to the frame. Add in the steel insert on the bushings of the spring, add some moisture, and rust appears. Add in that every time the suspension moves, it's metal on metal which creates noise.

One solution is to get new bolts with grease fittings, but that will only help on 2 of the 3 points, as you have the front spring which is directly bolted in and can use lubrication, the lower rear shackle bolt which is located like the front bolt, but the top shackle bolt is just attached by sliding through a steel bracket welded to the frame, very hard to keep lubricated. Plus the bolts with grease fittings in them are drilled to push grease out 1/2 way down the bolt and get compressed between the bolt and inside of the spring bushing, something the rear top shackle mounting area doesn't have.

One word of caution when removing the bolts, on mine I had to replace one because the nut was cross threaded on the bolt when installed from the factory, also the bolts are splined 1/8″ down from the head of the bolt, to prevent them from spinning, so they will need to be removed with a hammer from the threaded end, and lastly they are shoulder bolts, to make things tougher to find. I had to go to a specialty trailer shop to get the new bolt I needed to replace.