Fan clutch replacement help
My morning project is to replace the fan clutch on my '67 L71. In scoping out the job (I have not done this before and the CSM is no help) I see two fan belts on the fan pulley. A very short one from the crank pulley up, (the fan pulley and crank pulley almost touch), and the longer, adjustable one on the alternator. When I remove the fan pulley to mount the new clutch, is there enough play in the short, crank to fan pulley belt to get the fan pulley bolts back into the water pump shaft? I am just afraid of needing some special tool I don't have and getting stuck with a mess. Thanks for any help.
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Big Tanks In the High Mountains of New Mexico -
Re: Fan clutch replacement help
Isn't there a tensioner on that belt? -
Re: Fan clutch replacement help
Michael,
If all your doing is replacing the fan clutch, and not getting into things like replacing belts and cleaning up or painting the pulley or other components, you should not have to remove the pulley from underneath the clutch, and everything "should" stay in place well enough to not cause you any problems on reassembly. There are always exceptions, but this one will probably go according to plan.
LynnComment
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Re: Fan clutch replacement help
OK, thanks, I was not sure if the four bolts holding the fan clutch shft on the pulley also held the pulley onto the water pump shaft. I was hoping maybe the pulley was attached some other way to the water pump shaft and would stay in place when I remove the clutch shaft. Thanks.Big Tanks In the High Mountains of New MexicoComment
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Re: Fan clutch replacement help
There should be four grade eight bolts to remove the clutch hub from the water pump. Hold the belt and loosen all four before removing any of the bolts.
Agree with Lynn, you should not have to remove anything else, the fan and clutch should come out the top. Sometimes the fan clutch hub is difficult to get away from the water pump pilot, just be patient and keep it square.
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Re: Fan clutch replacement help
It worked fine, no problems, 5 minute job done. Now for the last of the jobs to conquer the dreaded 427 overheating at low speeds problem.Big Tanks In the High Mountains of New MexicoComment
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Re: Fan clutch replacement help
GOOD LUCK with that one. I would suggest searching the archives for some of the solutions others have come up with for this. Seems I have heard it all over the years, including somewhere where someone found a rag or something stuck in the system somewhere. I think the first thing may be to verify ALL of the seals surrounding the radiator and shroud are in place and doing there job.
LynnComment
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Re: Fan clutch replacement help
I finally fixed my overheating problem on my 427 by putting the correct fan clutch on. I first bought the replacement for $99.00 but it is the small clutch that you see on ebay and that didn't help. I finally got the correct original one from John Schell from VetteLink and that fixed the overheating problem.Jack Corso
1972 Elkhart Green LT-1 Coupe 43,200 miles
Top Flight 1994, 2018 & 2021Comment
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Re: Fan clutch replacement help
Yep, now I have finished the fixes. New VAC unit that pulls more advance at lower vacuum, $10. New fan clutch, $147. Radiator cleaned and rodded, $120. Advance idle timing to 10 degrees BTDC, $0. Check all shroud fit and seals, $0. Driving today for 3 hours in stop and go traffic and the temp stays beow 185 the whole time, PRICELESS.Big Tanks In the High Mountains of New MexicoComment
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