Hydro assist plumbing question?!

xraidedj · Jan 24, 2009

Heres the questions...I am doing my hydro assist on my MJ and I am installing a Power steering cooler(tranny cooler) and I have a new radiator also with the ports that would normally be used for tranny fluid...Can I plumb the lower pressure hose from the box to cooler, than from the cooler to the top radiator fitting and then from the lower fitting back to the pump? Is that ok or is the power steering fluid corrosive more than ATF of any other problems? or will it cause the steering to become warmer than if I bypassed the radiator all together and went from the cooler straight to the pump? I just figure that its not being used and would act as a fluid resevoir allowing more fluid to the system thus keeping the whole thing cooler?

One more question....can I use a 99 power steering pump from an XJ on my 89 4.0?they look similar...is there anything Im missing?

zukkev · Jan 24, 2009

The cooler(s) should be plumbed on the return side of the system-not the PSI side....I know it doesn't pertain to your ?, but just thought Id let ya know....:awesomework:

xraidedj · Jan 24, 2009

zukkev said:
The cooler(s) should be plumbed on the return side of the system-not the PSI side....I know it doesn't pertain to your ?, but just thought Id let ya know....:awesomework:

even though I knew that, good info for someone...thanks, I think im gonna skip the radiator first...thanks.

lojones · Jan 25, 2009

I would be worried that the radiator cooler would cause too much cavitation.

xraidedj · Jan 25, 2009

even if the entire system was blead? im finding that hard to do after this evening.

xraidedj · Jan 26, 2009

Im having issues bleeding the whole system all the way...ideas? tricks? hook it up...

nevada · Jan 26, 2009

just keep turning it.
sometimes they take a LONG time to bleed.
especially when ur starting with a dry system.

let it sit for awhile(10 min), so the air bubbles can all float to the top, then try again.