C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1990 Throw out bearing

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Old Apr 19, 2007 | 04:22 PM
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Default 1990 Throw out bearing

Does anyone have a diagram of how this thing goes in? I have two different ones, and one looks pretty simple, but the other looks very complicated. Is it just a typical install with the bearing going into the fork and resting on the pivot ball (the fork i mean)? Is there a part i'm missing? i have a 6 speed! Was there a 5 speed in this car for this year? The lady at the parts counter at chevy said there was, but i don't know enough about them. Thanks!!
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Old Apr 20, 2007 | 11:24 AM
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help!
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Old Apr 20, 2007 | 11:27 AM
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The 91 TOB slides into the clutch fork and is held into the Clutch Pressure Plate with a wire ring.

Looks like this

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Old Apr 20, 2007 | 11:33 AM
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Originally Posted by daniel0213
Does anyone have a diagram of how this thing goes in? I have two different ones, and one looks pretty simple, but the other looks very complicated. Is it just a typical install with the bearing going into the fork and resting on the pivot ball (the fork i mean)? Is there a part i'm missing? i have a 6 speed! Was there a 5 speed in this car for this year? The lady at the parts counter at chevy said there was, but i don't know enough about them. Thanks!!
I know this doesnt answer your question, but....

Im assuming you are doing a clutch change. If so, heed my advice.

You may be better off re-using your OEM throwout bearing.

ACDelco has contracted these out to CHINA and the new ones are much sloppier (wobbling in its sleeve) and more prone to breakage than the ones that GM installed in our car.
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Old Apr 20, 2007 | 11:35 AM
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Pretty typical, except the bearing pulls on the pressure plate instead of pushing.

T/O bearing slips in from the frontside of the pressure plate spring and the clip goes on the back to hold it in.
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Old Apr 20, 2007 | 11:38 AM
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Originally Posted by daniel0213
Does anyone have a diagram of how this thing goes in? Thanks!!

The square part is what the fork holds onto, so it points toward the rear of the car
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Old Apr 20, 2007 | 11:38 AM
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Originally Posted by dizwiz24
I know this doesnt answer your question, but....

Im assuming you are doing a clutch change. If so, heed my advice.

You may be better off re-using your OEM throwout bearing.

ACDelco has contracted these out to CHINA and the new ones are much sloppier (wobbling in its sleeve) and more prone to breakage than the ones that GM installed in our car.
At the very least, inspect the thin flange on the t/o bearing for cracks from manufacture.
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Old Apr 23, 2007 | 10:04 AM
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perfect! Thank you guys very much. I'm originally a ford guy, so i appreciate your patience!!
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