[snova]

Hi All,

Today I had a strange thing happen.   I was accelerating hard going straight, and then all of the sudden my power steering was completely gone. Last December I rebuilt the PS pump seals,  reserve tank, and replaced hose from the tank to the pump.   I also replaced the banjo bolt and replaced the crush washer.   I see no obvious leaks and the PS fluid level is still at Max  in the tank as I filled it back in December. The belt to the pump is about 12 mo old and tightness is correct.

 

The only strange thing that I found was when I took off the bottom engine access panel I found a large looking rubber binding on the top side of the access panel.  Right about where PS steering pump is at.   It was not there last night when I had the engine cover off. Therefore its is likely  it correlates to the PS failure.   It has a split on one side which looks old (i.e. not recent). and a line around its outer circumfrence.   Perhaps remnants of a "zip" tie holding it on compensate of the split of the rubber on one side.  Anyone know what this is and where it goes? 

 

Perhaps whatever this was keeping air from getting into the system?  maybe somewhere near the rack?

 

What else should I look at?

Partial Post: Please Login or Register to read the full post.

[Waylander]

That looks looks its off the oil cooler pipes, and as the power steering is under pressure when running 120 bar or about 1500 psi Im sure it would leak rather than draw in air


The only thing to do now is drain it down and see if the pump shaft is broken inside the pump


Can you see the fluid moving in the tank with the engine running

Partial Post: Please Login or Register to read the full post.

[snova]

That looks looks its off the oil cooler pipes, and as the power steering is under pressure when running 120 bar or about 1500 psi Im sure it would leak rather than draw in air


The only thing to do now is drain it down and see if the pump shaft is broken inside the pump


Can you see the fluid moving in the tank with the engine running

Waylander,

ok.. I'll see if I can see any fluid moving around first.   If not, then I'll drain and open up the PS pump.  A broken shaft, wow.. I didn't know that was even possible. I guess I could take the belt off and see if the pulley will pull right out along with a the shaft. lol.  Thanks again, you are always so helpful.  

 

re: oil cooler mount.  I'll try to take a look.  Hopefully it will be obvious where on the oil pipes it used to be placed.

 

Looks like the following parts numbers:

930 207 265 00 - rubber mounting

N 020 906 3 - tie wrap 

Partial Post: Please Login or Register to read the full post.

[snova]

No movement seen in the reserve tank. Check. So might be the pump I guess. Will update on what I find.

Partial Post: Please Login or Register to read the full post.

[MCL968]

I believe Waylander, in one of his earlier posts, indicated that there is a filter in the bottom of the reservoir tank. If your filter is packed up, there would be no fluid movement. Given the unusual circumstance that would lead to a broken pump shaft, compared to the relatively common case of a packed up filter, I would go with the larger probability and easier (and cheaper) fix first.

 

Again, as I recall with Waylander's earlier post, the reservoir is also used on BMW's, and is available through their parts distribution network at a lower price.

 

Good luck! Let us know what you find.

Partial Post: Please Login or Register to read the full post.

[Waylander]

I believe Waylander, in one of his earlier posts, indicated that there is a filter in the bottom of the reservoir tank. If your filter is packed up, there would be no fluid movement. Given the unusual circumstance that would lead to a broken pump shaft, compared to the relatively common case of a packed up filter, I would go with the larger probability and easier (and cheaper) fix first.

 

Again, as I recall with Waylander's earlier post, the reservoir is also used on BMW's, and is available through their parts distribution network at a lower price.

 

Good luck! Let us know what you find.

 

be odd not to have some movement even if the filter is partially blocked,

 

But anyway further to MCL post the tanks are made by Meyle,

Part Number 314 632 0000.


Used On


E30 right through to E92, all 3,5,6,7 and Z roadsters

Partial Post: Please Login or Register to read the full post.

[snova]

I believe Waylander, in one of his earlier posts, indicated that there is a filter in the bottom of the reservoir tank. If your filter is packed up, there would be no fluid movement. Given the unusual circumstance that would lead to a broken pump shaft, compared to the relatively common case of a packed up filter, I would go with the larger probability and easier (and cheaper) fix first.

 

Again, as I recall with Waylander's earlier post, the reservoir is also used on BMW's, and is available through their parts distribution network at a lower price.

 

Good luck! Let us know what you find.

ok... I'll go check that out.  Thanks.

Partial Post: Please Login or Register to read the full post.

[snova]

Hello,

I wanted to follow up on my findings.   The snap ring holding end of the PS pump spindle shaft came off.  Eventually the spindle moved forward and off the mating gears.  No damage was found on either gears.  When the shaft moved forward it must have hit the rubber binder around the oil cooler lines and knocked the zip tie off.   All back to normal and no serious damage done minus a lost zip tie.   Thank you all for the support and ideas.

Partial Post: Please Login or Register to read the full post.

[Roboman]

Good to hear it, and a plastic zip tie is unlikely to damage metal gears ..... but may block an oil line or some such..... no idea where it is??

Partial Post: Please Login or Register to read the full post.

[Waylander]

The zip was cut by the pulley on the pas pump and fell off somewhere

Partial Post: Please Login or Register to read the full post.

[94SilverCab]

Wow! I wonder what it would have cost to have a Porsche mechanic to fix this...

 

Glad we're here to help,

 

Jay

Partial Post: Please Login or Register to read the full post.

[Waylander]

Seen this happen before, someone fitted a seal kit in the pump and over stretched the locking clip

Partial Post: Please Login or Register to read the full post.