plosey93es

Hello All,

I'm trying to determine which hoses are which and how to flush the system the best, considering it has the hydraulic fan. Looking at the PS reservoir, it appears to have two feed lines and two return lines, am I wrong?

Is it right to thing that there are basically two different hydraulic systems here? One for the power steering and another for the cooling fan. Any advice, tips, links, vids would help very much.

I'm trying to fix a fluid leak which then caused my car to overheat...

-P

LeX2K

Ideally you'd remove one of the return lines from the reservoir but given the age of the car you could end up cracking it. Use a siphon or turkey baster and suck out the fluid from the reservoir then top off, do this 6-7 times and you're good.

You could say there are two hydraulic systems but they share fluid. The PS pump is really two pumps in one.

plosey93es

Right. They share fluid but the systems are split. So since I had a leak and my car started overheating, I had a leak in the cooling side of the hydraulic system. That sound right? My steering felt fine the whole time.

Guess I'll just have to follow hoses to see which hose runs which system. Unless someone knows of a diagram....

LeX2K

When I had my 1993 Camry V6 (same drivetrain as your car) this hose failed.
Was a bit tricky to get the fitting loose on the pump, check Rockauto if you don't want to spend the $$$ for OEM. Don't drive your car until you get the leak solved the 3VZ-FE engine does not tolerate overheating well. For diagrams see here
http://www.japan-parts.eu/lexus/us/1...et/2?pnn=16927

plosey93es

Yes, the diagram is very helpful. I almost positive that exact hose has already been replaced. Bolt directly to the top of the fan motor and runs to the PS pump, correct? I think I have a leak elsewhere which I have to locate. I did have to drive it some while hot but haven't driven it since. Gonna flush it right now and hopefully I can locate the leak. Thanks so much for the help.

LeX2K

Yes. The diagram makes it seem like the line is quite short but it's not it runs from the pump around the back of the engine and to fan motor. If that is not your leak source then the pressure line for the steering rack is the next likely culprit. But given the age of the car it could be any of the lines.

edit - here's the PS system diagram
http://www.japan-parts.eu/lexus/us/1...-steering-tube

44411 tends to go bad this is a problematic hose because the vacuum idle up is threaded into the top it can be very difficult to remove without destroying.