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1998 GMC Jimmy Question: how to remove big nut on clutch/ fan to remove water pump, & is it a reverse

 

Question

diggerdog, Waterford, MI, July 20, 2012, 14:02
 Rookie

treaded ? Book says hold pump pulley then remove ,but how?
thanks for HELP!!!

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  • Answer #1

    July 20, 2012, 16:20
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     Master

    " Long" rod 1/2"dia.or so,& hammer.Fan threads right hand,place rod or punch
    or chisel on large nut so as to turn to your left (counter ciock) &strike with hammer.
    Works every time. Works a lot better with belt installled!! Now,there are tools
    just for this but the tools i mentioned befor work really well.

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    diggerdog, July 20, 2012, 22:28
     Rookie

    Thx for quick response i fixem, I'll give it a try this Sunday& let u know if successful!!!

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    pushrod, July 21, 2012, 01:35
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     Master

    If you have access to an air chisel with long attachment even better than a hammer. Don't try to cut the big hex nut,
    angle as to turn it cc. Install the fan the opposite way but it doesent take a lot of torque!! Just 2or3 licks will do as it will try to
    tighten itself when engine starts.
    Old school.

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    diggerdog, July 22, 2012, 11:37
     Rookie

    I thought it was a reverse nut? If I'm facing front of car wouldn't I turn it clock wise to loosen ? So
    I hit chisel clock wise that would loosen it, right ? cc (right to left )would tighten the nut? I'm ready to work on pump but now I'm not sure which way to turn nut. Shouldn't I place chissel on right side of nut ? Sorry I'm not understanding u

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    pushrod, July 22, 2012, 11:47
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     Master

    Standing in front of car turn nut to your LEFT standard threads on fan ciutch !!.

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    pushrod, July 22, 2012, 11:52
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     Master

    Standing in front of car turn nut to your LEFT standard threads on fan ciutch !!.
    Turning nut to your left IS counter clock!!!! Works a lot better with belt
    installed!!!!

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    miketrishgr, February 01, 2013, 01:42
     Rookie

    In the same boat how do I brace the fan brackets and pullys are out and don't know how to brace and no wrench jus monkey wrench and sockets screw drivers hammers.....

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    pushrod, February 01, 2013, 02:24
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     Master

    Are you going to replace the water pump? If so dont worry about it if you damage the pulley on pump, wedge something between pulley and pump body to keep pulley from turning then use method above to remove fan.
    Now is this the 4.3L?

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