Fan Clutch?
04-06-2012, 02:33 AM
#41
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Lots of misinformation about the fan clutch getting tossed around ....
It will have a good bit of resistance when cold, but loosen up after a couple of minutes driving. It SHOULD have little resistance at normal temps until the heat comes up, WHEN IT WILL ENGAGE AS IT WAS DESIGNED TO. Anything else means it has or will fail soon.
Double check the bearings in the fan pulley assembly while you're in there. They can wear over time & disintegrate. I lay mine on it's face & pour a tiny bit of motor oil into the bearing crack whenever I have it out for any reason. It takes an hour or two for it to soak in.
Still going smooth at 270,000 miles~
It will have a good bit of resistance when cold, but loosen up after a couple of minutes driving. It SHOULD have little resistance at normal temps until the heat comes up, WHEN IT WILL ENGAGE AS IT WAS DESIGNED TO. Anything else means it has or will fail soon.
Double check the bearings in the fan pulley assembly while you're in there. They can wear over time & disintegrate. I lay mine on it's face & pour a tiny bit of motor oil into the bearing crack whenever I have it out for any reason. It takes an hour or two for it to soak in.
Still going smooth at 270,000 miles~
03-25-2013, 04:12 PM
#42
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I recently went through this thread and checked my fan out. Thought the repair manual procedure may be of use to someone one day...
1) With engine off and ignition key removed, rock the fan back and forth by hand and check for excessive bearing play. Visually inspect for substantial fluid leakage. Either problem calls for replacement of the clutch assembly.
2) With the engine fully warmed up, shut off the engine and remove the key for safety. Turn the fan by hand. Some drag should be evident. If the fan freewheels to easily or is completely locked up, replace the fan clutch.
1) With engine off and ignition key removed, rock the fan back and forth by hand and check for excessive bearing play. Visually inspect for substantial fluid leakage. Either problem calls for replacement of the clutch assembly.
2) With the engine fully warmed up, shut off the engine and remove the key for safety. Turn the fan by hand. Some drag should be evident. If the fan freewheels to easily or is completely locked up, replace the fan clutch.
05-02-2013, 12:40 AM
#43
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Hey everyone, glad there's a discussion about this. I'll have to check out my fan clutch and see if I need a new one. I'm rebuilding my 22re and I'll most likely get a new Aisin one. I'm fairly new to the 22re world and have been curious, is it the fluid inside that thickens, or is there a mechanism that engages when the fan clutch heats up?
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