Throwout Bearing??? Or other problem ? - JeepForum.com
 
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post #1 of 13 Old 05-19-2013, 05:52 AM Thread Starter
jmm1982m
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Throwout Bearing??? Or other problem ?

My Jeep is an 83 Scrambler with a 360 and a T176 behind it. Only has about a thousand miles since i built it. When i push clutch down and put it in gear it makes a whirling sound when i let up about an inch. It goes away when clutch is not applied and also if i put tranny back in neutral...it was a new throwout bearing when we built this. Clutch linkage is still on body although thinking of moving it to frame. Any thoughts ?

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post #2 of 13 Old 05-19-2013, 05:55 AM Thread Starter
jmm1982m
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Also i do wheel the heck out of it and problem started during a jeep jamboree. Was fine for the first 400 miles atleast. It wouldn't surprise me if the frame does have a tweak to it.
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post #3 of 13 Old 05-19-2013, 06:45 AM
melancholy35
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Could be the input shaft bearing on the t176.
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post #4 of 13 Old 05-19-2013, 07:03 AM
attworth
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I recently had one go out at ~500 miles. Just a bad part I think. If it was the throw out though, I'm pretty sure itd still whine with the clutch in and trans in neutral. I'd be looking at input/ouput bearings. Maybe have a brave soul crawl under and see if they can hear where its coming from.

79/82/84/92 CJ-7 - 258/T-150: always a work in progress
1993 ZJ - 4.0L/AX-15: new daily/cheap fixer-up
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post #5 of 13 Old 05-19-2013, 07:17 AM Thread Starter
jmm1982m
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That's my thought on the no whining in neutral...even my friend who is our in house jeep god is somewhat baffled. The last thing i want to do is find out i need to rebuild the tranny...
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post #6 of 13 Old 05-19-2013, 07:21 AM Thread Starter
jmm1982m
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Obviously after its pulled...but how difficult to replace an input bearing? does that require a complete tear down
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post #7 of 13 Old 05-19-2013, 07:28 AM
243
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I would put money on a throwout bearing, it's not spinning in neutral or with the clutch disengaged but spinning and noisy with the clutch engaged. What a PIA too, sorry to hear that you have to dick with this after a rebuild.

The input bearing on my T177 was trashed and it was noisy in neutral.

1978 Cherokee, TBI 360/T400/QT...6.0/6L80/NP241C in the works...
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post #8 of 13 Old 05-19-2013, 01:39 PM
titomars
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What you're describing sounds more like a pilot bearing/bushing problem. Did you install a new one? Pilot bearings generally make their noises upon release of the clutch.
T/O bearings generally make their noise pushing the clutch in. Trans input bearings generally make their noises when spinning so most of the time.

1981 Jeep CJ7 4.0 HO, AX-15, D300, D30, D44, SOA
1977 Chevrolet C/10 step side 454 TH400 3.73 posi
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post #9 of 13 Old 05-19-2013, 01:48 PM Thread Starter
jmm1982m
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I did and judging by the stuff i found on here i guess u can install them too far? is that true? and like i said, in neutral its mint...no noises...clutch released or let out....only in gear and clutch let out slightly and while in a gear...
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post #10 of 13 Old 05-19-2013, 09:16 PM
titomars
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Quote:
Originally Posted by jmm1982m View Post
I did and judging by the stuff i found on here i guess u can install them too far? is that true? and like i said, in neutral its mint...no noises...clutch released or let out....only in gear and clutch let out slightly and while in a gear...
you set them flush to the top of the bore. Did you use bronze bushing or bearing? if the pilot is too loose on the shaft what happens is as you left out the clutch the input shaft is moving around side to side in the bearing's bore. this is most noticeable with bronze pilot bushings. After a few hundred miles the grease disappears and the slop starts.

1981 Jeep CJ7 4.0 HO, AX-15, D300, D30, D44, SOA
1977 Chevrolet C/10 step side 454 TH400 3.73 posi
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post #11 of 13 Old 05-20-2013, 04:28 PM Thread Starter
jmm1982m
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Used the bearing. I still can't understand how it would fail so quickly...Im just not in a good shape to yank it apart....first jeep jamboree of year coming quick....
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post #12 of 13 Old 05-20-2013, 05:00 PM
palmtreejeeper
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Before my Dad and I reassmbled our 71 CJ5 we thought our throw out bearing was good. No noise and it spun without any noise. The jeep ran great but after abour putting 300 miles from the frame off restoration, the gringding noise started. It occurred when he put it into gear and stopped when out of gear. Anytime the clutch pedal was applied, the "scretching" started. We dropped the transmission out but left the bell housing on. The hole for the clutch fork and drive spindle was enough to replace it. It took us about 4 hours, we took our time becuase his 71 is completely restored and didn't want to scratch any paint. Good Luck. OIIIIIIIO
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post #13 of 13 Old 05-20-2013, 09:05 PM
titomars
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Quote:
Originally Posted by jmm1982m View Post
Used the bearing. I still can't understand how it would fail so quickly...Im just not in a good shape to yank it apart....first jeep jamboree of year coming quick....
I am not saying that the pilot is definitely the noise. I am not there listening to it. But I think it is pretty much a given you are going to have to tear it back down to find the offending part causing the noise. I think if it was me I would replace both the pilot bearing and the T/O bearing if nothing obvious stand out ...... just to be safe.

1981 Jeep CJ7 4.0 HO, AX-15, D300, D30, D44, SOA
1977 Chevrolet C/10 step side 454 TH400 3.73 posi
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