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QV Water Pump

Discussion in 'Mondial' started by westyguy, Mar 22, 2012.

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  1. westyguy

    westyguy Formula Junior

    Apr 27, 2009
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    Steve
    #1 westyguy, Mar 22, 2012
    I just got my water pump back from Flying Dutchman and am ready to start installing. They included the gasket and also an O-ring. I can't find the O-ring position. I don't see the O-ring in the workshop manual, nor do I recall taking one off. Can someone enlighten me? Perhaps used on earlier or later cars than my '84?

    Thanks,
    Steve
     
  2. Wade

    Wade Three Time F1 World Champ
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    #2 Wade, Mar 22, 2012
  3. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    #3 Steve Magnusson, Mar 22, 2012
    Last edited: Mar 22, 2012
    It's not technically part of the water pump (but it was a nice courtesy for them to include it IMO). Item #25 (105196) here:

    http://www.ricambiamerica.com/parts_catalogs.php?M=FE&P=&V=diag&I=2332

    It goes between the rear water pump housing casting of the water pump (item #1) and the engine block. If you have not removed the rear water pump housing casting (item #1), you won't need it.

    (Even though they sometimes call item #38 an "o-ring", that's really the thermostat gasket, and isn't an o-ring strictly speaking -- it's sort of a "partially split" D-ring.)
     
  4. westyguy

    westyguy Formula Junior

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    #4 westyguy, Mar 22, 2012
    Thanks guys. I didn't remove the rear housing, so that explains why I didn't see it. I wasn't even looking up there for it in the diagrams. Now if the belt will get here I can put it back together!
    Steve
     
  5. adamae82

    adamae82 Karting

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    Al Peralta
    #5 adamae82, Mar 22, 2012
    Hi westguy, when I did my belt service, I also change the water pump. I need to remove the housing as the bolt for the water pump broke and was seized to the housing and remedial work is needed. Once the housing was removed, I found that the O-ring is fully compressed and for insurance I replaced the O-ring. This might fall in the "while your in there" category. If the old O-ring leaks, your new belts and tensioner bearing will be contaminated. Since you have removed all the water pump bolts, the housing will come out with the removal of 2 more clamps. Replace the O-ring and let say you have an additional insurance that everything is in order.
    Just my .02
     
  6. westyguy

    westyguy Formula Junior

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    #6 westyguy, Mar 23, 2012
    The previous owner did the belts less than a year ago. They did not change or service the water pump, and it siezed on me. I wasn't planning on going as deep as the timing belt replacement since it was just done. I'm still waiting on the water pump belt to arrive as I couldn't seem to source it locally. I agree-if the timing belt is replaced that O-ring certainly should be replaced, but in such a recent belt job, I don't think I'll go any deeper.
    Thanks,
    Steve
     
  7. godabitibi

    godabitibi F1 Veteran

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    #7 godabitibi, Mar 23, 2012
    WESTYGUY you do not have to go anywhere around the timing belt to replace that O-ring, just remove the rear pump housing. He was saying that if you don't do it and it start leaking you will THEN contaminate your belt and bearing. This is a safety procedure while you are at the pump. Very simple to do. If nothing is siezed.
     
  8. mwr4440

    mwr4440 Five Time F1 World Champ
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    #8 mwr4440, Mar 23, 2012
    Is the o-ring as big as pictured in Daniel's post or is it smaller?
     
  9. Ricambi America

    Ricambi America F1 World Champ
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    #9 Ricambi America, Mar 23, 2012
    Last edited by a moderator: Sep 7, 2017
  10. westyguy

    westyguy Formula Junior

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    #10 westyguy, Mar 23, 2012
    It is that size O-ring. It looks like to get to the rear water pump housing I have to remove the air box on the top of the engine to able to get to the hose clamps. I can't see that there is anything especially troublesome in doing that, but would appreciate any warnings on that. I was able to get to one of the hoses with the housing in place, but couldn't get to the second clamp. I initially was going to remove the pump and thermostat as a unit to service the pump, but looked as if i was going to have to go pretty deep to get those hoses off. Sounds like I'm making this more difficult than it really is.
    Steve
     
  11. mwr4440

    mwr4440 Five Time F1 World Champ
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    #11 mwr4440, Mar 23, 2012
    Daniel,

    That ALMOST looks looks like the o-ring that goes on the back of the waterpump mount, between it and the block, that also appears to be not pictured.
     
  12. Ricambi America

    Ricambi America F1 World Champ
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    #12 Ricambi America, Mar 23, 2012
    It is #25 as linked in Steve's post.
     
  13. JohnnyS

    JohnnyS F1 World Champ
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    #13 JohnnyS, Mar 23, 2012
    Is the water pump loose from the thermostat housing? If not, put the 4 bolts back in but leave about 1/4 inch of free space from the bolt head to the pump housing. Take a long handle screw driver and tap it into the top of the water pump housing where it meets the thermostat housing. Just a couple of light taps and the water pump will be free......unless someone put on gasket cement. Once loose, remove the 4 bolts and pull out the water pump. I didn't replace my O-ring for the reason you are having....not getting at the second, lower hose clamp on top of the engine. I installed my rebuilt pump, and there were no leaks. So, I'm good for another 3-5 years.
     
  14. westyguy

    westyguy Formula Junior

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    #14 westyguy, Mar 23, 2012
    The rebuilt pump is ready for installation. No problem getting it off....I did just as you said. I just am not sure the need for going deeper to replace the thermostat ring since I didn't take it off and it would have been replaced when they did the belts a year and 3K miles ago.

    I also was going to replace the radiator hoses up front, but when I pulled the upper and looked for cracks inside, it was fine, so I put the old ones back on. They are not original, but appear in great shape.

    Thanks,
    Steve
     

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