Fan clutch replacement (1 Viewer)

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Replaced these on the 80 before but not on 100. Any tips&tricks to making it a quicker and easier job?
 
I did mine last year and it was pretty straight forward. I did the thermostat at the same time so the lower hose was out of the way. I pulled the fan and fan clutch out as one unit then changed the clutch on my bench. I was able to get it out without removing the radiator shroud.
 
midwest2 said:
I did mine last year and it was pretty straight forward. I did the thermostat at the same time so the lower hose was out of the way. I pulled the fan and fan clutch out as one unit then changed the clutch on my bench. I was able to get it out without removing the radiator shroud.

Thanks. I just went the long route:

Remove front skid
Partially drain radiator
Remove top radiator hose
Unbolt fan clutch (pia)
Unbolt shroud and slowly remove both shroud and fan clutch while working around wiring loom and ac line.
 
I swapped in a mix of 7500 and 10000 cst silicone fluid a few years ago via post from the 80's section and all is good...saved me from $$ replacement.

When I do need to remove the fan I've found a Klein strap wrench indispensable...no other strap wrench I've found is as good/better...FWIW.
 
Any advice on how to keep the whole assembly from spinning around while trying to unbolt the fan clutch from the engine (the four 12mm bolts that hold the fan clutch to one of the pulleys on the engine.)?

When I try to turn the bolts, the whole assembly just spins (slips on the belt)... driving me nuts!
 
Any advice on how to keep the whole assembly from spinning around while trying to unbolt the fan clutch from the engine (the four 12mm bolts that hold the fan clutch to one of the pulleys on the engine.)?

When I try to turn the bolts, the whole assembly just spins (slips on the belt)... driving me nuts!

Try wedging a rag where the fan belt meets the pulley.
 
Well didn't get that to work either. Just not enough space to work from the top--not sure how you guys managed it. I'm finding this one to be a real pain in the $@!
 
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Put a second wrench on one of the other nuts to hold it in place.
 
Maybe a Klein strsp wrench like Spress posted above.

Put a second wrench on one of the other nuts to hold it in place.

I tried both of those, but still failed...

With the strap wrench, I didn't manage to get it well situated... not sure if my strap was too big (didn't even get the strap wrapped around the part--the limited access from the top was just too much of a point...)

With the 2nd wrench I didn't manage to keep the part from spinning -- didn't really have enough room to get both arms in there on those shore 12mm wrenches!

I know this is doable, as many others have clearly done so... just wish it wasn't such a pain (might be the 1st project that I will have to abandon as DIY and get someone more talented to sort it out...)
 
I feel ya I'm in the same boat with trying to get the fan clutch off. The 80's are easy I never had an issue. Oh and to top it off my nuts are stripped
 
Take the belt and wrap it around the pulley with a socket wedged in the belt. The socket will make the belt snug up between two pulleys.
 
I had to remove the fan from my 100 series LC the other week. I had my son rest a heavy steel bar upright on the top of one of the nuts while I gave a box end wrench on an opposing nut a whack in the counterclockwise direction with the end of a small sledge hammer handle. Worked well, all the nuts spun loose on the first or second whack.
 
Old thread but FWIW.. I just did my fan clutch on my '99 100, Aisin FCT-021 from Amazon. I removed plastic engine beauty cover, top half of airbox and tubing to throttle body assembly, get two 12mm box end wrenches: hold the 12mm flair nut on the clutch hub that is bolted to pulley with one wrench (for me right hand) use the other to loosen one of the other nuts. I used the box end of another wrench on the 12mm wrench for more leverage. They broke free pretty easy.. I had a 14mm on a breaker bar to release tension on the belt tension pulley so I could hand rotate the fan clutch to the next position. When you have 3 of the nuts loose, take one off and put back on backwards so the flair is outwards, wedge a long large screwdriver against that nut/stud to hold while loosening last 12mm nut. I was able to get fan/clutch assy. out without removing any shroud or hoses, just a little prying on the assy. where it met the engine/t-stat housing area and was able to walk it out. I took about 10-15 minutes to remove..

 
I have found on both occasions that getting those bolts off works better if you attempt it with a hot engine.
Long box wrench held in place and hit it with a hammer. They came right off for me. Just my 2 cents.
 

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