need help getting seal or rebuild kit for TRW power steering pump from 1966 satellite

1966 -1967 Mopars

  1. moparjon

    moparjon Member

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    i am pretty sure its a trw pump , and it's leaking from a seam in the housing/front part . i guess its probably the seals . but , i am having a hard time finding a kit for it . most of the parts places have them for the saginaw , and some like rock auto have a listing that says w/ chrysler P.S steering pump . but it does not specify if its a trw or federal . does anybody know if this would be the right or wrong kit ? or , does anybody know where to get a kit for the TRW ? i know i can get a remanufactured one . and i know i can send mine out to get rebuilt . but i would much rather replace the seals myself . it does not appear to be a difficult job , and it still works great . not to mention way cheaper . any thoughts ?
     
  2. 62 Dart Convertible

    62 Dart Convertible Well-Known Member

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    Hi Mate

    I just went through this too!

    Firstly, you need to identify your pump brand. It could be either a TRW or a Federal. See this pic -
    pump_differences.jpg
    If you have a TRW (sometimes also called Thompson) there are several sub types, distinguishable by the end of the shaft being either plain (also called small TRW), or slotted or having a hexagonal recess (and also called large TRW).

    I recently bought a kit from Rockauto for my small TRW pump on my 62 Dart. (Mine was Gates kit 350370).

    If it's leaking between the cast iron pump body and the sheetmetal housing (and NOT the shaft seal), it's likely just the body o-ring needs replacing which can be bought for a few dollars from your local bearing and seal shop. Eg - http://www.sealingdevices.com/o-ring-sizes (Mine was a 2-245 on that chart.)

    If so -
    Remove the PS pump from car. (Careful not to bend/break the return hose fitting in pulling off that old hard hose as it's only soldered into the housing. Ask me how I know?!)
    Drain it.
    Remove the mounting bracket and bolts at the back of the pump.
    Pump body can now be pulled or knocked out of reservoir. Take care not to bend the reservoir in any way!
    Dont lose gasket that is sandwiched inside between reservoir and pump that seal the bolt holes.
    Remove and replace o-ring in groove on pump body.
    Clean all and re-assemble.

    If it's leaking from the shaft seal, then you need a kit, and fitting that is a whole other bag of beans. Just removing the pulley can be a real prick without the right tool!!!!!

    Good luck, and please update as to how you get on!

    pump_differences.jpg
     
    Last edited: Feb 8, 2014
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    • themechanic

      themechanic Oklahoma is OK FBBO Gold Member

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    • 67 coronet

      67 coronet Well-Known Member

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      use a soft blow rubber hammer to seperate the pump and resevoir.do not pry it off.if you bend any part of the resevoir it is almost impossible to get it to seal again.
       
    • moparjon

      moparjon Member

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      I know its been awhile , but i finally got around to it . i have the small trw . it was leaking between the pump and housing . the original o-ring seal was very hard and so old it was almost square . it took me awhile to get a new o-ring . there was not any seal shops in my area . so i ordered one online ( actually i ordered three , just in case i messed up ) . i got the -245 bn70 , -245 is the size , bn70 is what its made from ( nitrile ) and hardness ( 70 ) ( from everything i looked at hours of research to make sure , bn70 is exactly what i needed ) thanks mr. 62 dart convertible ! the size you posted was dead on . thanks for your post , you really saved the day . the only thing i did differently from your instructions was i lubed the new o-ring seal with power steering fluid before putting it together ( which seamed to help because the fit was very tight ) and i primed and painted the pump after i put it together because the leak had removed most of the old paint . also , when i took it apart , there was not a exactly a gasket between the reservoir and pump body inside . there was a tiny rubber washer in a recess around the hole . not sure if that is what you meant , but after the paint dried i put everything back together and its great ! no leaks !

      - - - Updated - - -

      oops , i almost forgot the picture . the obvious arrow points to where the pump was leaking ( between the pump and pump housing ) . the new O-ring was all it needed . mopar sat ps pump there.JPG
       
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      • 62 Dart Convertible

        62 Dart Convertible Well-Known Member

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        Great to hear it went well, and I am glad to help mate!
         
      • kiltedrunner

        kiltedrunner Well-Known Member

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        My pump is leaking from the shaft so I need to replace the seal. Hopefully I can find a replacement.

        What part do you hit to separate the casting from the resevoir?
         
      • kiltedrunner

        kiltedrunner Well-Known Member

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        I removed the reservoir off without too much trouble at all - just a light tap on the folded part of the reservoir and off it came from the casting.

        Now to figure out what parts I need to rebuild it...
         
      • 62 Dart Convertible

        62 Dart Convertible Well-Known Member

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        Be sure to identify your pump type in order to get the right kit!
         
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        • kiltedrunner

          kiltedrunner Well-Known Member

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          Well I managed to get my pump rebuilt, but now it seems to be puking the fluid all over the place and runs REALLY hot - even when just idling the motor.

          Whats the normal operating temperature of a power steering pump?
           
        • 62 Dart Convertible

          62 Dart Convertible Well-Known Member

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          They will get warm but not crazy hot. Is it spewing fluid from the filler neck? Are you running the correct PS fluid?
           
        • kiltedrunner

          kiltedrunner Well-Known Member

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          I'm running ATF fluid in the pump, so that shouldn't be a problem. I found a manual online (http://www.mymopar.com/index.php?pid=109) last night and read about how to rebuild the pump... wish I found this earlier in my searches.

          The fellow who rebuilt the pump for me pulled apart the pressure-relief-valve... which could be causing me some issues.


          Does anyone have a heat gauge that they could measure their pump while the engine is idling?
           
        • Dave L

          Dave L Well-Known Member

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          Hello,I think you have your vanes in backwards
           
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          • kiltedrunner

            kiltedrunner Well-Known Member

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            Well that is possible. I do have positive steering now, but it's a little heavier than what I remember.

            Do you think that the pump would still function with the vanes in backwards?
             
          • kiltedrunner

            kiltedrunner Well-Known Member

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            Just pulled it apart and found that the valve was in backwards!!! That will cause some heat issues I'm sure.

            He also pulled apart the pressure relieve valve apart for some unknown reason too and I see in the manual it says:.

            Pressure Relief Valve
            The pressure relief valve should be replaced as an​
            assembly if pressure test indicates it is incorrectly set​
            or leaking. The valve screws out of pump body after​
            brackets and reservoir are removed. Do not attempt
            to readjust this valve.

            Thompson Power Steering Pump.jpg

            Now I'll have to guess where this valve was set originally!!!

            Thoughts?
             
          • kiltedrunner

            kiltedrunner Well-Known Member

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            Got it!!

            With the parts in correctly it runs - fancy that!

            As for the pressure relieve valve, I adjusted to eye.... not sure how to test it without a proper pressure gauge.
             
          • Johnny Bag O Donuts

            Johnny Bag O Donuts New Member

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            Hi, guys, looks like this thread is a couple years old, but I am currently in the same situation: Small TRW pump leaking from reservoir.

            I have the new reservoir o-ring in hand ready to install, and already removed the reservoir housing, but I am curious if anyone has info for replacing the seal that goes between the pump and reservoir housing (top bolt hole in the pic below). Do I need to replace it? What's the part number and supplier? It seems old and MAYBE brittle. I'd hate to not replace it only to have a new leak associated with this part when I re-install the pump!

            Highlighting the part I am talking about, MoparJon wrote above on May 27,2014: "when i took it apart , there was not a exactly a gasket between the reservoir and pump body inside . there was a tiny rubber washer in a recess around the hole ."

            Thanks to any and all who can help!

            pump internal seal.jpg
             
            Last edited: Sep 2, 2017
          • Johnny Bag O Donuts

            Johnny Bag O Donuts New Member

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            Oh, on top of what I asked earlier, anybody know a part number for the shaft seal as well? Might also need some TLC for this as well.
            Thanks again!
             
          • dieseldazzle

            dieseldazzle Well-Known Member

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            I posted it on here before
             
          • dieseldazzle

            dieseldazzle Well-Known Member

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            Pretty sure this is it

            IMG_2088.PNG
             
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