back story is im finished with my build but dont have power steering.
first. i completed everything and put it together with no luck (zero assist from the pump)
second, rebuilt my OE pump and in the interim bought a reman unit which is overly difficult to find. reman pump yielded same result.
third and current step, i pulled the reman unit last night and will try my OE one that has been refreshed.
though this is the odd part.. ive noticed my reman pump and OE one arent exactly the same, casting is similar enough 110 bar vs 100. but (see pic) mine had a clear opening and reman has some sort of blockage on the outlet.
I have a later pump on the shelf and found both ports to be wide open for flow. No check valve no obstruction.
The obstruction you have will clearly prevent fluid flow. If it is in the inlet side (larger port) there is no way gravity flow will open the port and allow fluid into the pump and if it is on the outlet side - pressure will force the obstruction into the port and continue to block it.
Have you tried to have the old pump rebuilt? Kits are available for some of the PS pumps and JCS has experience with the rebuilds. Best of luck.
Ralph
Edit: BTW - Your car (with all 6 ITBs) is awesome!! Question on your other thread forthcoming.
Last edited by Ralph in Socal on Sun Aug 24, 2014 5:56 pm, edited 1 time in total.
There is a very fine line between "Hobby" and Mental Illness.
85 635csi Zinno Auto
84 528i Euro
83 635 Euro Arktik
81 528i Kastanien 5-speed
88 528e Bronzit (Granpa Car)
86 535i Auto (For Sale)
81 633 csi (retired)
Ralph in Socal wrote:I have a later pump on the shelf and found both ports to be wide open for flow. No check valve no obstruction.
The obstruction you have will clearly prevent fluid flow. If it is in the inlet side (larger port) there is no way gravity flow will open the port and allow fluid into the pump and if it is on the outlet side pressure will force the obstruction into the port and continue to block it.
Have you tried to have the old pump rebuilt? Kits are available for some of the PS pumps and JCS has experience with the rebuilds. Best of luck.
Ralph
its on the lower port (pressure out)
just got finished installing the oe rebuild and filling it. will report
Rockauto also has seal kits as follows:
Edelmann #8841 $20.79
Gates #348424 $29.79
Don't know if it includes a shaft seal which is as follows:
National #7013S $4.86
SKF #7475 $9.62
This is for my 1984 633Csi which should have the same or similar pumps, but at least you can check Rockauto for your car.
I've seen a post somewhere about rebuilding the pumps.
sansouci wrote:Rockauto also has seal kits as follows:
Edelmann #8841 $20.79
Gates #348424 $29.79
Don't know if it includes a shaft seal which is as follows:
National #7013S $4.86
SKF #7475 $9.62
This is for my 1984 633Csi which should have the same or similar pumps, but at least you can check Rockauto for your car.
I've seen a post somewhere about rebuilding the pumps.
Carlp336 wrote:ok the latest is that the seal in the res is letting fluid out.. oh boy ...
-in which case the pump may also be drawing in air when the engine is running, and 'froth' does not make for a working PAS system.
if you look inside the reservoir when the engine is running (have an assistant work the steering perhaps) then you may see frothy fluid coming back down the return pipe into the reservoir.
Carlp336 wrote:ok the latest is that the seal in the res is letting fluid out.. oh boy ...
-in which case the pump may also be drawing in air when the engine is running, and 'froth' does not make for a working PAS system.
if you look inside the reservoir when the engine is running (have an assistant work the steering perhaps) then you may see frothy fluid coming back down the return pipe into the reservoir.
cheers
a little update. the rebuild (by me pump is back on the car) with no luck. thursday i swapped the steering box! yup the whole box. still same result.... no assisted steering. what am i missing. ???
Carlp336 wrote:ok the latest is that the seal in the res is letting fluid out.. oh boy ...
-in which case the pump may also be drawing in air when the engine is running, and 'froth' does not make for a working PAS system.
if you look inside the reservoir when the engine is running (have an assistant work the steering perhaps) then you may see frothy fluid coming back down the return pipe into the reservoir.
cheers
a little update. the rebuild (by me pump is back on the car) with no luck. thursday i swapped the steering box! yup the whole box. still same result.... no assisted steering. what am i missing. ???
Bummer! Wish I could help but I do admire your dedication.
Carlp336 wrote:ok the latest is that the seal in the res is letting fluid out.. oh boy ...
-in which case the pump may also be drawing in air when the engine is running, and 'froth' does not make for a working PAS system.
if you look inside the reservoir when the engine is running (have an assistant work the steering perhaps) then you may see frothy fluid coming back down the return pipe into the reservoir.
Brucey wrote:
-in which case the pump may also be drawing in air when the engine is running, and 'froth' does not make for a working PAS system.
if you look inside the reservoir when the engine is running (have an assistant work the steering perhaps) then you may see frothy fluid coming back down the return pipe into the reservoir.
cheers
a little update. the rebuild (by me pump is back on the car) with no luck. thursday i swapped the steering box! yup the whole box. still same result.... no assisted steering. what am i missing. ???
Bummer! Wish I could help but I do admire your dedication.
If the car he's working on now is the same one that's on his website, I'd be dedicated too! Damn what a fine engine bay. I'll have to revisit his project.
Sorry I can't help Carl, other than suggest a collapsed hose, possibly intermittent, like when there's pressure... ain't no magic on things mechanical like this.
Bill
PS... may also explain the new seal leaking.
'87 635csi, 5sp man, dk blu on pearl beige
'88 635csi, auto, black on grey
'63 BMW Isetta
'75 XJ6C, 2dr, warm 350
'86 XJ6, th700r4
'75TR6
'64 Olds 88 conv
"68 T120 Bonneville
A. original setup. oe pump / oe gearbox. failed
B. REMAN pump / oe gearbox. failed
C. Rebuilt oe pump / oe gearbox. failed
D. Rebuilt oe pump / gearbox #2. failed
each scenario was bled and with clean fluid each time. i have no frame of reference as to what it should feel like, but i know it should feel different running vs. off.
