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As part of my I-should-know-better-but-I'm-going-too-far work on my 928, I am replacing all the PS system hoses. I have a new Porsche PS pressure hose. I have seen in numerous write-ups that people dremel off the crimp on the reservoir end of the return line and replace the rubber hose with bulk hydraulic hose.
No problem, I am going to do the same thing.
Well...tonight, I removed both line assemblies from the car. I noticed there is a short 90 degree rubber hose on the rack end of the PS return line.
What are people doing to replace this? I see that there is a coil, maybe a spring, around this short rubber hose. Could I use bulk hydraulic hose and use the coil to keep it from kinking as it bends the 90 degrees?
PS return line assembly.
Reservoir end of the PS return line assembly. This rubber hose is commonly replaced with bulk hydraulic hose.
Rack end of the PS return line assembly. Not sure if the coil is used to support the rubber hose and keep it from kinking. I would like to replace this with bulk hydraulic hose.
It has no pressure so it would be safe to use a hose clamp on and not have a large risk of leaking however you should crimp on new hose (bulk hydraulic will work perfectly) metric size is preferred.
The coil is used to prevent kinking just like on the rear brake lines.
I recently replaced this line and followed Dwayne's instructions which you may have already stumbled on.
I found getting the alternator out of the way the biggest PITA which required Fan shroud loosening and bottom radiator hose removal. Clearance to get alternator bolts out required this.
A new dremel bit is necessary to cut out the old connectors. Dwayne's write up always makes it look easy but I found this seemingly simple replacement challenging and messy(coolant, PS fluid, and sparks from cutting).
I was playing around with the length of hydraulic hose that I have for the reservoir end of the line. It had no trouble making the bends needed to reach the reservoir. As well, it had no problem making the 90 degree bend for the rack end of the line.
Most buy a $15 PS reservoir to PS pump hose and cut a section from it that fits perfectly.
Molded to the right shape and exactly the same hose.
Easy Peasy!!
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Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
I'm taking my hoses to a 'Hose Dr' and getting them to remove the old rubber sections and replace with braided lines. Cheap solution and they look cool too.
Seth, I took mine to Cline Hose in Greenville, and had them rebuilt for $64.00. They did my GT as well years ago. Roger's plan of using the reservoir line for the end of the PS return is brilliant, and if you supply it, Cline will crimp it on. I went with bulk hose, then a hose spring to keep it from kinking when making the turn. Works great. I also have extra springs if you need one.
Just as an FYI, the "spring" is not on there for anti-kinking, it's for anti-abrasion, like stones,
same on the brake lines,
I've been using the Roger's method for some time w/o any issues, main thing it to get the correct grade hose for Auto Trans fluid
Dave K
Dave I wasn't referring to the existing spring on the bottom of the line, rather the other end when using bulk hose. With bulk hose it tries to kink when you bend it downward to hook up with the mating pipe, so using an "anti-kink spring" on the hose helps to prevent this issue. That's what I've done and it works well. Pretty cheap as well, as the springs can be had for a couple of bucks.
02-15-2017, 12:09 AM
Replace rack end of PS return line
George Layton March 2014
