Demonic Power steering box

[4thwheel]

So I pulled a leaking power steering box on my 81 FJ40 and purchased a seal kit fron $OR. It had developed a leak at the top seal input shaft. The kit did NOT include all teflon rings for the worm gear assy. The top input seal was the only power piston seal included, with the exception of the cylinder/piston bottom seal and o-ring. If the box leaks from the input shaft seal, me thinks that the two teflon valve assy seals would be the culprit. The top seal is just a dust/water seal right?

I discovered a rusted,pitted input shaft and preped it with a light emery cloth and 400 grit finish paper. Still had some pitting when i called it good. After the rebuild, I installed and drove around a bit and parked in my driveway. All well so far...upon restart the seal failed and ps fluid coated everything. Too much fun.

My question... I heard you can replace all the internals of the OEM PS box with parts from a mini truck. Can anyone fill me in on the details?

I want to purchase a new or well rebuilt mini truck box and swap out the parts.

Does Toyota still have the mini truck boxes. Parts from?

Has anyone done this?

What year and model mini?

cant send the unit to west texas offroad because of the pitted shaft.

 

[John Smith]

Landpimp did it years ago. See this thread. https://forum.ih8mud.com/40-55-series-tech/12567-40-series-oem-power-steering-install.html

You just need to get a solid axle mini ps box from a yard or someone. 85 and earlier is what you are after 4Runner or Minitruck.

 

[kbill45]

ps box

Pick up a used mini ps box on here for around $100. Takes a different mounting bracket that orangeFJ45(georg) can provide. A rebuilt mini box is going to run around $460 if you don't have a core.