Screeching noise source identified

[Edward J.]

Re: Screeching noise source identified

Steve, been around cars for along time, and I agree with Mike, fan belts are cheap,Fan clutchs do a few thing when the gone, generally when the bearing fails theres a alot of play in the fan and vibrate at cruising speeds , and, when the fluid starts leaking- The cooling of the engine slows and the car overheats. can you feel any play when you try to shake the fan blade? to screech on make a metalic sound from a fan clutch I would say it would be a rare one.

[Steve D.]

Re: Screeching noise source identified

Ed

Fan is tight. Belt is new and soaped, but I will try another one before I change the clutch

[Tom L.]

Re: Screeching noise source identified

Joe answered your question about the "captive belt". About the idler pulley, I believe they were only used on A/C cars but not being an expert I could be wrong.

[Edward J.]

Re: Screeching noise source identified

Steve,Try adding alittle more tension to the alternator belt first before you head out for a new belt.

[Stuart F.]

Re: Screeching noise source identified

Thanks for the education fellows on the captive belt. My frame of reference is the late 50's and early 60's before I left for SEA (until 1971). I still, using common sense, can not imagine an application of any belt not having a means of adjustment, but then that's just me stuck with my old ideas. Guess I'll have to pay more attention to some of the newer models.

Stu Fox

[Paul Y.]

Re: Screeching noise source identified

Don't forget the solid lifter cars of that era.

[Joe L.]

Re: Screeching noise source identified

Joe answered your question about the "captive belt". About the idler pulley, I believe they were only used on A/C cars but not being an expert I could be wrong.

Lynn------


Idler pullies were used on only 2 basic groups of applications. These were 63-65 with solid lifters (plus, possibly some 65-66 with L-79) AND 1968-74 big block with C-60.