Sudden lost power steering after fluid drain - PeachParts Mercedes-Benz Forum

lsmalley · #1 06-29-2016, 02:43 AM

Replaced the power steering pump and problem is now resolved. Though, I am not sure how the pump failed. It does not look like much can go wrong with it since its mechanical. When I disassembled it everything was moving freely inside and no binding of any sort. I'm puzzled.

Zulfiqar · #2 06-29-2016, 12:08 PM

Quote:

Originally Posted by lsmalley

Replaced the power steering pump and problem is now resolved. Though, I am not sure how the pump failed. It does not look like much can go wrong with it since its mechanical. When I disassembled it everything was moving freely inside and no binding of any sort. I'm puzzled.

was the pump rotor not fully seated when you took it apart? I learned that while resealing saginaw pumps, the rotor needed to be driven down hard in the cavity otherwise the pump relief port would just short circuit internally.

lsmalley · #3 07-07-2016, 03:37 AM

Quote:

Originally Posted by Zulfiqar

was the pump rotor not fully seated when you took it apart? I learned that while resealing saginaw pumps, the rotor needed to be driven down hard in the cavity otherwise the pump relief port would just short circuit internally.

Not sure, I just put on an entirely new pump.

lsmalley · #4 08-18-2016, 12:59 AM

Quote:

Originally Posted by Zulfiqar

was the pump rotor not fully seated when you took it apart? I learned that while resealing saginaw pumps, the rotor needed to be driven down hard in the cavity otherwise the pump relief port would just short circuit internally.

Actually, I believe the metal ring was placed in incorrectly. There is the large metal oblong ring that fits over the vanes, I believe it was placed in the wrong position as there is a small arrow next to it that should line up with the front.