Have not made pinbox adjustments but have looked into height adjustment issues.Been advised by several dealers that 6" clearance between the pickup box siderails and underside of fifth wheel nose is the desired dimension.
On the internet, there are some photo sequences on changing pin box height. Some support pin box in hitch when unbolted as they are quite heavy.Otherwise, definitely a two man job. Besidesbasic tools, the only specialty tool was atapered"drift" punchto align bolt holes whenremounting. Once secured with a couple bolts, a heavy hammer and block of woodto"tunk" the bolt holes into alignment may serve the samepurpose.
One concern if you have a tonneau cover. As you raise pinbox, the trailer and the frame flanges to which the pinbox is bolted are lowered.With many tonneau covers, thesiderailsfor the tonneau cover are mounted inside the P/U siderails. The lowered frame flangescould impact the tonneau siderails when making tight turns.
|