pilot vs throwout bearing

[p24-1953]

what are the symptoms of the two failing? i have got it messed up in my mind.

if i have a sound when the clutch is in ... it is the throw out failing

if the noise is when the clutch is in and the car in neutral then it would be the pilot bearing going out correct?

[Plymouthy Adams]

I had a whine in my car and it turned out to be the wife..turned up the radio and the noise went away..

a pilot bearing/bushing will squeal with the car running in neutral and the clutch pedal released..(input shaft stationary)

the input bearing noise is relevant when the input shaft is put into motion by the clutch..

Edited October 8, 2010 by Tim Adams

[Merle Coggins]

A throwout bearing will make noise when the clutch is depressed. However, it will begin as soon as all free play is taken up, even before the clutch is fully disengaged. The pilot bearing wouldn't make any noise until the clutch is fully disengaged and the shaft and flywheel are turning at different speeds. That's how you can differentiate between the throwout and pilot bearing noise.

Also, from my experience, you can sometimes feel a bad throwout bearing when you step on the clutch pedal. The pedal will have a different feel than normal.

Merle

[greg g]

also with the clutch partially depressed sometime a failing throwout will transfer some vibration through the linkage to the clutch pedal.

While driving with the flywheel and input shaft turning at the same speed any pilot bearing /bushing noisese should deminish or dissappear. my experience has been that in most cases noises eminating from the clutch assembly is the throw out.

[TodFitch]

A throwout bearing will make noise when the clutch is depressed. However, it will begin as soon as all free play is taken up, even before the clutch is fully disengaged. The pilot bearing wouldn't make any noise until the clutch is fully disengaged and the shaft and flywheel are turning at different speeds. That's how you can differentiate between the throwout and pilot bearing noise.

Also, from my experience, you can sometimes feel a bad throwout bearing when you step on the clutch pedal. The pedal will have a different feel than normal.

Merle

True for most vehicles. I had a 1982 Plymouth TC3 that was equipped with a self-adjusting cable on the clutch and it had the throw out bearing continuously touching the pressure plate fingers. Net result was the bearing failed pretty regularly and when it first started going out it would make noise until you stepped on the clutch. You wanted to fix that pretty quickly as when it totally failed the clutch would not disengage (duh) but worse all the bits and pieces of the throw out bearing would be sure to damage the pressure plate, disc and flywheel.

I also had issues with the hydraulic clutch on a 1992 Jeep Cherokee. My feeling is that sometime between the 1960s and the 1980s Detroit forgot how to build a manual transmission car.

[Young Ed]

I also had issues with the hydraulic clutch on a 1992 Jeep Cherokee. My feeling is that sometime between the 1960s and the 1980s Detroit forgot how to build a manual transmission car.

My 94 dakota has 194K on the original clutch setup. Never been touched. So they can still get it right on occasion.