How to remove the Fan blade on a 97 Chevy?

How to remove the Fan blade on a 97 Chevy?

Postby mr singh [OP] » February 28th 2011, 11:15pm

Guys i'm going to be working on putting my third alternator in soon, but the fan blade gets in my way..

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How do I remove it? :confused:

Thanks!
Am
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Re: How to remove the Fan blade on a 97 Chevy?

Postby chevymaherchevymaher is online! » February 28th 2011, 11:20pm

Disconnect the negative battery cable for safety.


Loosen the clamp, then remove the air cleaner assembly.
Remove the upper fan shroud retaining bolts, then remove the upper shroud from the vehicle.
Remove the fan and clutch assembly retainers using J-41240, or an equivalent fan clutch wrench.
If necessary, remove the 4 bolts holding the fan blade to the clutch, then separate the fan from the clutch assembly.

Exploded view of the fan and clutch assembly
engine fan.JPG
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To install:
Installation is the reverse of the removal procedure. Tighten the components to the following specifications:
If removed, tighten the fan-to-clutch bolts to 24 ft. lbs. (33 Nm).
Install the fan blade and clutch assembly to the engine using J-41240 and tighten the retainers to 41 ft. lbs. (56 Nm).
Connect the negative battery cable. Start the engine and check operation.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby mr singh [OP] » February 28th 2011, 11:50pm

So its just held on via a stud/bolt.. and a pair of big *** spanners is all it really needs?
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Re: How to remove the Fan blade on a 97 Chevy?

Postby GaryZ » March 1st 2011, 1:40am

mr singh wrote:So its just held on via a stud/bolt.. and a pair of big *** spanners is all it really needs?


My '98 has the same big-ass nut on the back of the fan. It threads on the snout of the water pump.

I use a very scientific method for removing this beast;
Clamp very large adjustable wrench (mine is 18") onto the nut with the wrench standing at 12 o'clock.
Plant both feet firmly and hit the wrench sharply with a big hammer from right-to-left.
The nut should come loose and twist the rest of the way off by hand.

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Re: How to remove the Fan blade on a 97 Chevy?

Postby redfury » March 1st 2011, 2:44am

It's a 32mm wrench if you want to spend the 40 bucks on one like I did. Then, you'll need a 20 dollar strap wrench to hold the pulley so it won't move on you. Lowes has a really nice one ( it's red ) for like 15 bucks. I just replaced mine as it was broken.
A temporary fix usually becomes a permanent solution, therefore it does not exist.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby cowboydan » March 1st 2011, 2:55am

in the steering forum i poset a sticky: 97 astro steering pump on the ground in less than an hr/less. check out the pics for the fastest/ easiest way. hope it helps
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Re: How to remove the Fan blade on a 97 Chevy?

Postby Mr_Bowtie » March 1st 2011, 2:55am

Autozone rents the fan wrenches if you need one. After you take it off once its easier to remove the next time.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby mr singh [OP] » March 2nd 2011, 11:51pm

Thanks fellas! I'm in the UK so somewhere limited to some of your array of auto mobilier tools stores :(
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Re: How to remove the Fan blade on a 97 Chevy?

Postby Mr_Bowtie » March 3rd 2011, 1:33am

Oh that sucks. Just get a big cresent wrench at the store that will work. I have one in my garage I bought for like $10 that fit on there. Then a big hammer like someone mentioned! :banana:
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Re: How to remove the Fan blade on a 97 Chevy?

Postby mr singh [OP] » March 17th 2011, 6:30pm

Sorry to up this again.

I got a 32mm adjustable spanner.. but how the hell do I stop the fan from spinning, tried wedging something in to stop it spinning and tried a little spanner on the bolts around the pulley and that didn't work.

Any ideas?

Thanks!!
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Re: How to remove the Fan blade on a 97 Chevy?

Postby GaryZ » March 17th 2011, 7:02pm

mr singh wrote:Sorry to up this again.

I got a 32mm adjustable spanner.. but how the hell do I stop the fan from spinning, tried wedging something in to stop it spinning and tried a little spanner on the bolts around the pulley and that didn't work.

Any ideas?

Thanks!!


You are beginning to understand the need of a "big hammer".
The fan belt needs to be installed.
Place the spanner on the nut with the handle at 12 o'clock.
Smack the handle with a "big hammer" to loosen.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby ihatemybike » March 17th 2011, 7:05pm

I use the box end of a bigger combo wrench. Put the box end over one of the four pulley bolts, rotate clockwise till the handle come in contact with the center shaft/32mm nut, then use the 32mm wrench and work the two wrenches opposite each other.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby Gus_Mahn » March 18th 2011, 3:48am

Some shop guys use an air chisel with a dull bit. You hit it just off the edge of the flat on the loosen side of the nut. The nut will break loose and can be turned by hand or with a pair of channel locks. It can be tightened with the opposite method. Sorry I don't recall which direction is loosen. On my own Safari during a water pump replacement, I just pulled the plate off the back and jammed a screw driver between the housing and impeller.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby redfury » March 18th 2011, 4:50am

You can't go wrong with this. You have to remove the belt anyway. Cost me $14 at Lowes, works like a charm...stay away from the cheap ones from Harbor freight, they just use a thick rubber band....this uses a reinforced rubber belt so it won't stretch.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby mr singh [OP] » March 18th 2011, 6:56pm

OK folks, going to try out some of these ideas tomorrow or Monday.. will update you all :)
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Re: How to remove the Fan blade on a 97 Chevy?

Postby Leeann_93 » March 19th 2011, 12:11am

^^ I used the same method on the '93 ;)

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Re: How to remove the Fan blade on a 97 Chevy?

Postby redfury » March 19th 2011, 3:11am

BTW, a 32mm wrench can be had for as little as $10. I overspent by going to NAPA for mine instead of Northern Tool and Hydraulic. The quality of that wrench didn't have to be a $40 ticket.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby webcat » March 19th 2011, 3:55am

nice pictures!
Here's the fan part.
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Re: How to remove the Fan blade on a 97 Chevy?

Postby mr singh [OP] » April 30th 2011, 11:49pm

Been busy as hell.. getting back to work on this beast.

Used air chisel and few hits with a 18" adjustable wrench and came off :)
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Re: How to remove the Fan blade on a 97 Chevy?

Postby redfury » May 1st 2011, 1:54am

redfury wrote:BTW, a 32mm wrench can be had for as little as $10. I overspent by going to NAPA for mine instead of Northern Tool and Hydraulic. The quality of that wrench didn't have to be a $40 ticket.



Actually, my mistake, it' s a 36mm wrench for those that care.
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