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Fan Clutch - 11.1L Detroit Series 60

Question:
Well, now that it is colder my engine temp rarely goes over 150 so I figured out the fan was stuck on. With the key on and the engine not started you can't turn the fan plus it sounds like air is leaking out the front of the clutch hub. Anybody know if you can get the fan and clutch out without pulling the radiator ? I priced the clutch new at $500+ and went for the $100 rebuild kit instead. It might only be an "o" ring or something but the kit has instructions as to how to take this apart and get it back together and with 900k on this 1995 FLD120 it probably is worth rebuilding while I have it out.

Answer:

Rdkill I was able to get the fan clutch out of my car to rebuild it without taking the rad out. Different car though Mine is a 9200 IH. I had to take the fan off and it was tight getting my hands in there to get the fan bolts out. It took two people to lift the fan clutch and fan and mounting bracket straight up. But it can be done atleast on my model car.
M 12.7 S60

Answer:

if you need to get by for a while follow the air line to the three way switch. pinch off the incoming line with small vise grips. you have to unscrew the outgoing airline to release the air pressure from the fan. yes you can get it out without removing anything else.

Answer:

I remember getting my fan clutch rebuilt on the old car a few years ago.. (bearing failure) I was expecting a rad pull, but the mechanic told me he didn't need to pull the rad, as there was 'lots of room' on an FLD 120.
I didn't spend the entire time looking over his shoulder, but i recall he separated the fan from the clutch hub, unfastened the inner shroud, and moved things around while unbolting the clutch assembly. I also recall some cussing in the short time i took a peek. The rad wasn't pulled on my car, nor was it damaged in any way.
One thing i do remember; it cost almost as much for a rebuild kit and labor as it would have to simply bolt on a new fan clutch assembly.

Answer:

Thanks guys! I also found set of better instructions. One of my fan mounting studs is floating loose and can't be tightened or removed but I'm hoping the stud is pulled out of the hub and will come out with the fan and is not stuck into the hub. I've also experienced an intermittant loud vibration coming from up front (mostly gone now) that could be the internal bearing breaking up and that could be why the seals are trashed . If ithe bearing is gone the rebuild kit says the only fix is to replace the entire clutch. If I was having a shop do this I'd definitely go for the new clutch but as us carers work for free I thought I'd give the rebuild a try as it looked pretty easy.

Answer:

Update on my stuck fan clutch:
The fan clutch was working before the car was parked for six months. Today I went to mess with it and decided that the air leak wasn't big enough to cause it to stop working. I read in one of the manuals I have for it that the clutch can get "stuck" and tapping it with a hammer would get it loose again. I hate to play "hammer mechanic" but damned if tapping on the three back pates that hold the lining in didn't get rust powder puffing out. It didn't immediately start turning right by hand but after starting it and running down the road a bit I noticed my shifting sucked - with the fan off it takes about twice as long as before for the engine to slow down enough to catch the next gear . BIG difference on running downhill too - that fan was soaking up a lot of horsepower and now I have to use the brakes a lot more. Time to get the engine brake installed!
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