Power Steering Pressure Hose

Silver MK3

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Jan 24, 2011
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Today I noticed that my 87 Supra had a slight leak on the power steering pressure hose on the rubber section that comes off of the pump. I plan on replacing it soon, and am looking into OEM vs. the driftmotion stainless steel hose. Everything else on the car is OEM, the way I like it:icon_bigg. I am not sure how the drifmotion is routed or if its fittings are any more/ less reliable that the original banjo bolts (mine held up for the last 24 years and still aren’t leaking:yikes:). I am not concerned with the appearance of stainless steel; I just don’t want it to leak at the connections. Any advice, recommendations, or tips on installation are greatly appreciated (especially if you have pictures).
Thanks in advance,
Gavyn
 

Silver MK3

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Jan 24, 2011
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When you say far superior, I assume that you are talking about reliability? Any idea on how the Dm is routed from pump to the steering gear? Is it going to rub on anything?
 

mkiiichip

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Sep 10, 2007
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There are no provisions for the "idle up" valve on the DM line. Stock is the way to go IMO.
 

Flateric

New Member
Mar 26, 2008
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The DM kit is nice, if your on a budget High pressure hydrolic line with nylon lining (I think) are really good too, cheap, tough as hell and easy to find. But then you will also need to buy the fittings for pump and rack to make it work right.
 

figgie

Supramania Contributor
Mar 30, 2005
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make sure that the hose used is for high pressure situation as the power steering pump is cranking out 1250 psi on average. That is on the verge of most hoses max operating pressure (not to be confused with burst pressure). Aeroquip, Earl, Russel stains steel braided hose fall under this category. You need the power steering hose OR high pressure hydraulic hose (usually PTFE internal).
 

Flateric

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Mar 26, 2008
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The canadian power steering hoses from princessauto are dual layer 2 wire PTFE lines and are garrenteed for life and rated at 4800PSI. Best part the hose length for the line you need will run you around $24 CDN with any end fittings you want (on top of the $24 of course) properly press fit onto your hose. So for around $30 CDN you can have exactly the hose you need with the ends you need all set up. So if you know someone up here in frozen hell it could work out for ya.
 

Silver MK3

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Jan 24, 2011
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Thanks for all of the input. I ended up buying the OEM/Powercraft from Advanced Auto, ran me $54 after the online promo code. I guess I'll be putting it on this weekend. Since I am pulling the system apart I figure that I would drain and replace with fresh ATF. Any thoughts on how to clean out the resevoir, it has alot of brown gunk built up on the sides of it?
 

mkiiichip

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Cleaning the res is not easy. There is a screen in the bottom that is not removable. Back-flushing is the key to get it as clean as possible.
The best way I have found was using one of those ultrasonic parts cleaners, but as clean as possible with carb clean works too.

jetjock;1673651 said:
Iirc the valve screws into the pump. Been a while though...

Your right, I was thinking JZ lines.
 

arknotts

formerly ark86
Jan 9, 2008
461
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Ohio
hvyman;1674897 said:
Brake cleaner. And get the screen clean as that can block oil flow.

+1. Or carb cleaner. Spray a bit in the reservoir, put the cap on, cover the inlet/outlet and shake it for a while. Rinse, repeat. I got mine pretty darn clean that way. Even got 20 year old sludge off the sides! (Don't think it was changed often enough in its past life :nono:)
 

Silver MK3

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Jan 24, 2011
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Here is a follow-up... I just wanted to close the loop and hopefully help the group. Where was all of this information a week ago :aigo:.

Here is how I changed the power steering pressure hose, with an OEM replacement from Advanced Auto. It is helpful to degrease the areas you’ll be working around, especially the steering gear.

1. The air intake needs to be removed to be able to get to the hose where it connects to the pump.
2. Then the two brackets that hold the return and pressure hoses to the frame need to be taken off. There is a small bolt that holds the top half of the clamp (8mm).
3. Separate the banjo bolt (22mm), from the Pressure Port Union on the pump (27mm). Fluid will pour out so be ready. On mine the Pressure port union also backed out of the pump with the banjo bolt attached, so I had to separate them once the whole line was off. Be careful there is an O-ring that goes between the union and pump.
4. Next the return line on the driver’s side (17mm) needs to be separated from the gear housing to get a socket onto the pressure line banjo bolt (22mm) which also has to be removed from the gear housing. I had to access the return line from above, and the banjo bolt from below.
5. Then the steering rack needs to be separated so the old hose can be pulled out and the new one can be put in. There are two bolts (17mm) on the top of the rack on the passenger side, and one on top on the driver side, and one that is accessed through a hole in the bottom side of the frame on the driver’s side. Unbolting the steering rack also let me turn it slightly so I could get the sockets on the steering gear banjo bolt easier.
6. Once I had the old pressure line out, I removed the return and suction line on the reservoir and the three mounting bolts (10mm) so I could remove the reservoir and clean the inside of it with carb cleaner and brake cleaner. Mine was really nasty on the inside and had to keep working it to get all of the grime off of the screen by rinsing it at the right angle so the dirt ran out of the return line port. It didn’t come out perfect, but it is a lot better than when I started.
7. I remounted the reservoir, and reattached the lines to it.
8. I had to reattach the pressure port union to the pump (51ft-lbs) (27mm). Be careful as you finger tighten it so the O-ring doesn’t get pinched.
9. Route the new pressure hose by lifting up on the steering rack to get enough clearance to feed the pump end of the hose up above the rack. Just get it close to how it originally was routed for now.
10. Reattach the banjo bolt to the Pressure Port Union, now on the pump. Use the new copper washers that came with the new hose. As you finger tighten the banjo bolt, slightly wiggle the end of the hose to make sure that the copper crush washers seat flat on the fitting. Tighten to 36 ft lbs (22 mm). Clearance can be kind-of tricky.
11. Reattach the banjo bolt on the driver’s side to the steering gear. This will be angled slightly toward the driver’s side wheel. The key on the end of the hose has to go to the left (as you are looking from the front). Again as you finger tighten the banjo bolt with new copper washers, you’ll want to wiggle the end of the line to get everything to seat flat. I actually even turned the end of the hose slightly extra towards the driver’s side to make sure everything seated properly. Tighten to 36 ft lbs (22 mm), and as with the other side, clearance is a pain because of the A/C lines directly above it. This is where I slightly twisted the steering rack to get the right angle for the torque wrench.
12. Reattach the return line to the steering gear housing (17 mm). Supposed to be torqued to 33 ft lbs, but there was no way I was going to get my torque wrench to fit down inside of there. I just snugged it up because it looked like soft metal.
13. Reattach the rack to the frame. The driver’s side clamp has a tab on the back side that needs to fit into a slotted “ear” on the top side of the frame. Make sure the rack is sitting flat and proper, and torque the four bolts to 56 ft lbs (17mm).
14. Reattach the pressure and return lines to the two mounting brackets, make sure you have the small rubber isolators in place and put the top of the clamps back on and tighten (8mm). The replacement one fits fine, but not exactly like the original.
15. Reattach the air intake, and vacuum lines on it.
16. Fill the reservoir with ATF ( I used Dexron III). When you start the car, it will drink it quickly. As I topped it off with the car running it spit a little bit out of the top of the reservoir, and made some whining and gurgling as it forced the air out of the system. To bleed it, just turn you wheels from full left to full right a bunch of times with the car running, and have somebody keeping the reservoir at its proper level so you don’t overfill it and you don’t let it suck air back into the lines. I did notice as it cycled through that it was a little foamy at first, but it is good now.
17. Pray to the banjo bolt gods and check for leaks—following these steps, I didn’t have any.

Even though I didn’t take step by step photos, between the instructions above and the photos below, you should be able to get the job done.

Slide1.JPGSlide2.JPGSlide3.JPGSlide4.JPGSlide5.JPG
 

jerry12345

Jerry
Jan 24, 2007
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Elk Grove CA
This is great info! Are you a tech writer by any chance? In any case I think you have saved me a lot of grief. Looking the job over, the only problem I might see is the removal of the pump pulley. Can't see any other way to get a wrench straight on that 27mm. Did you have that problem? Anyway, many thanks again.
 

Silver MK3

New Member
Jan 24, 2011
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Madison, AL
jerry12345;1843280 said:
This is great info! Are you a tech writer by any chance? In any case I think you have saved me a lot of grief. Looking the job over, the only problem I might see is the removal of the pump pulley. Can't see any other way to get a wrench straight on that 27mm. Did you have that problem? Anyway, many thanks again.

Thanks. No, I am not a tech writer, but I figured that if I can post this hear and help out others, then it would be good. I know halfway through, I had to go and get larger tools, because I had nothing that big, and I didn't know before hand what sizes I would need. I didn't take off the bracket or pulley. I'm pretty sure that I just used a large rachet and a 27mm socket to take it off. I'm glad I was able to help someone out with this. Good luck with changing yours.