HappiJac 4150 Problem
So much for "HappiJac's Acme Screw Jack is the first acme screw jack with a redundant safety check system" One of my rear jacks failed, has no ability to raise/lower or hold up the camper, just sli...
Forum Discussion
Jfet wrote:HMS Beagle wrote:
Bronze ACME nuts are used for lead screws on machine tools, sometimes these things are run 16 hours a day for decades.
I never leave my cnc milling machine or lathe out in the snow and rain for months though...
Me neither, but that won't bother the bronze and he said the screw was shiny.
But for RAM TC - are you saying that the front jacks were 4150 ACME screw jacks on your camper? Which in your profile is listed as an AF 990? That seems like way too much for those jacks. My little Bigfoot had the 4500 jacks on the front (which carry a lot more of the weight) and 4150 on the back, it was listed by Bigfoot at 2200 lbs. My bigger Bigfoot is listed at 3000 lbs, 4500 on all corners. I think an AF 990 quite a bit more? Maybe AF under spec'd those...
Shop around the internet for those replacement jacks - prices vary a lot.
