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Power steering pressure line o-ring size?

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Cubey, Nov 21, 2019.

  1. Cubey

    Cubey Full Access Member

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    I'm starting to get tired of buying oil ($4/qt) and refilling my RV power steering pretty often.

    I already replaced the return line that was just clamped at both ends, so I suspect the leak is from the pressure line at the pump. There is a small o-ring at that end where it connects to the pump:

    s-l1600 (1).jpg

    Has anyone just replaced that little o-ring? If so, what size was it?

    The hose is about $18-25 but if a 50 cent o-ring fixes the leak, I don't see much point in replacing what isn't broken. Of course, the hose is probably the original from 1985 so it's probably due for routine replacement.

    This is the style of pump I have with the reservoir as part of it:

    ps pump.jpg
     
  2. 79jasper

    79jasper Chickenhawk

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    Take the old one off, then take it in to the parts store.

    Sent from my SM-N960U using Tapatalk
     
  3. Thewespaul

    Thewespaul Supporting Vendor Supporting Member

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    Dealership stocks them, they are a white o ring.
     
  4. SLC97SR5

    SLC97SR5 Full Access Member

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    If you are referring to what looks like a small black O-ring, I'm not any help. My hose does not have that.

    It does however have a small white teflon seal that rides in the top groove near the hex flats.

    Here is the package, they are stocked at our Napa and Amazon.

    Screenshot_20191015-090805_Chrome.jpg

    The nut will snug down but the line will still wobble in the pump, that's normal.
     

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