Water Pump Removal 73 Scout II

Discussion in 'General IH Tech' started by sl600, Dec 1, 2019.


  1. sl600

    sl600 Farmall Cub

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    I have a 73 Scout II without a fan clutch. To remove and replace the water pump I figure I have to:
    1. remove fan shroud
    2. remove the 4 bolts that hold the old water pump
    3. remove the water pump/fan/pulley assembly
    4. swap over the new pump and new gasket

    Am I missing anything or is that pretty much what needs to be done? Thanks for your help out there!
     
  2. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    Drain the coolant. Loosen any belts that engage the WP pully. Once the shroud is separated from the radiator, it can be shoved back onto the engine far enough to gain access to the fan bolts. If clearance is adequate between the radiator and fan, the fan can be removed, which allows easier access to the WP bolts. A piece of cardboard can be used to shield the radiator from damage.
     
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  3. mallen

    mallen High Wheeler

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    Personally, I'd just remove the radiator. Far less agrivation. You have to drain the coolant anyway.
     
  4. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    With the euro-tilt hood, radiator removal becomes it's own aggravation, although not impossible. I'd look it over from both sides and determine if there's enough clearance to do the job with the radiator in place. With the fixed fan, there should be enough.
     
  5. sl600

    sl600 Farmall Cub

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    So are you saying that the Fan+pulley+water pump assembly cannot be removed as one unit without removing the radiator and that I would have to remove the fan before I am able to pull out the pulley + WP assembly?
     
  6. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    No. What I'm saying is, if you can get the fan off first, you might want to do that.
     
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  7. RinTX

    RinTX High Wheeler

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    I’d try to get the fan off first. Be sure to put cardboard against the radiator and protect it
     
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  8. 1975IH200

    1975IH200 High Wheeler

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    You will want to break loose the fan retaining bolts prior to loosening the fan belts.
     
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  9. mallen

    mallen High Wheeler

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    If the clearance isn't to bad. But beware spending 4 hours wrestling with with a water pump with marginal clearance to save a half hour removing the radiator. Once the radiator is out, your talking literally minutes to swap the water pump without scraped arms or skinned knuckles.
     
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  10. scoutboy74

    scoutboy74 Lives in an IH Dealership

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    Pulling a SII radiator isn't the same as a D-series. The hood is in the way and it doesn't tilt to a 90. You need to have a really good reason to pull a SII radiator and in my experience, a water pump swap isn't reason enough. It can be done with the rad in place.
     
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  11. Patrick Morris

    Patrick Morris Lives in an IH Dealership

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    You don't have to completely drain all the coolant. Just take out enough so the level in the radiator is below the WP. And by "take out" I mean siphon the coolant out into a clean 5-gal bucket, using a half-inch length of clear vinyl tubing. This is way less messy that draining out the bottom. And assuming you weren't planning a flush and replacement right now, you can pour that coolant back into the radiator when you're all done.

    I've done the above process many times. The bucket only seems to fill about halfway up. I've changed the radiator doing this and the WP. Good technique also even if you only want to change the thermostat or the heater hoses without making a mess in the engine bay.
     
  12. sl600

    sl600 Farmall Cub

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    Did you remove the fan and WP as one assembly or did you remove the fan first?
     
  13. jeff campbell

    jeff campbell Lives in an IH Dealership

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    Fan 1st.
     
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  14. Patrick Morris

    Patrick Morris Lives in an IH Dealership

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    Yeah definitely remove the fan first. It’ll give you a lot more room to work in.
     
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