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post #1 of (permalink) Old 07-25-2002, 12:29 PM
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Transmission noise - 85 CJ7 T176/Dana300

Hi all,

I have a grinding noise when the clutch pedal is NOT pressed. When I engage the clutch the sound goes away. Could this be a throughout bearing? If it is the throughout bearing I guess I would have to drop the tranny, correct?

Any help would be greatly appreciated.

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post #2 of (permalink) Old 07-25-2002, 07:02 PM
I Might Just Know What I'm Talking About
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Re: Transmission noise - 85 CJ7 T176/Dana300

Well... that's a pretty vague question. But I'd say your diagnosis is correct. Throwout bearing.. needs thrown out. And yes, you'll have to drop the tranny. But prepare to replace clutch and pressure plate while you are there. It's a real pain to drop that tranny, you don't want to do it again if you don't have to.

There are other things that create a noise when the clutch pedal is OUT. But that bearing is most likely the culprit.
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post #3 of (permalink) Old 07-25-2002, 07:09 PM
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Re: Transmission noise - 85 CJ7 T176/Dana300

NO, it most likely can't be the throwout bearing, that only makes noise when the pedal is depressed. Sure, there is the chance of a totally dry bearing making noise when it is just sitting there, but not a very loud noise. Noise with partial pedal, say an inch or so means pilot bushing. But, I'd say from experience with a noise like that that what you have is input shaft bearing going out in the trans, the load is taken off of it when you disengage the clutch.
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post #4 of (permalink) Old 07-25-2002, 07:18 PM
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Re: Transmission noise - 85 CJ7 T176/Dana300

Input shaft bearing. I bet you can hear it in every gear but fourth. Had the same problem with mine too.

The only time a throwout bearing makes noise is while the clutch is being depressed/released and when the clutch is disengaged. When the clutch is engaged, the throwout bearing is idle.
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