Author Topic: clutch/trans noise diagnosis.  (Read 568 times)

Online Mr. Easy

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clutch/trans noise diagnosis.
« on: October 15, 2017, 07:08:43 PM »
On the Sunday run at RF I started to notice that when idling in neutral with the clutch engaged there was a rattling/grinding noise from the front of the trans. As soon as the clutch pedal was pressed down about 1 inch the noise would go away. When pressing the clutch pedal there seemed to be a little more resistance in the pedal than normal.

I pulled the trans out, the throw out and pilot bearings, clutch and pressure plate all appear fine. I don't see an excessive amount of play in the input shaft.  I'm not sure if it's the input shaft bearing of something in the clutch components.

Thoughts on what the most likely issue is?
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Offline Mr. Clean

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Re: clutch/trans noise diagnosis.
« Reply #1 on: October 15, 2017, 07:18:32 PM »
Just a thought, the throwout bearing may seem fine with no load but with pressure it still might be bad... same with the pilot bearing... when my defective throwout bearing came out, it spun fine but boy did it make a hell of a noise in the jeep using it to drive around.... may not be the culprit but worth looking at since its out....
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Online A new level

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Re: clutch/trans noise diagnosis.
« Reply #2 on: October 15, 2017, 07:49:06 PM »
Definitely sounds like throwout bearing to me
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Offline YJScrounge

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Re: clutch/trans noise diagnosis.
« Reply #3 on: October 16, 2017, 05:37:28 AM »
I would replace the throw-out and pilot and see what happens.
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Offline RedJeepster1

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Re: clutch/trans noise diagnosis.
« Reply #4 on: October 16, 2017, 06:13:31 AM »
What Pat said, you have it out right now, do the new pilot and throw-out bearing. It sounds like a throw-out bearing to me, but I wouldn't put it back together without changing the pilot bearing out too, just in case.
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Re: clutch/trans noise diagnosis.
« Reply #5 on: October 16, 2017, 06:42:23 AM »
That makes sense. I have a spare trans so worst case I pull it apart and change the trans.
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Offline Right Wing Curmudgeon!!!

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Re: clutch/trans noise diagnosis.
« Reply #6 on: October 16, 2017, 07:15:14 AM »
TO Bearing.  Nothing wrong with your trans.  Mine has been making noise since 3 months old.
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Online A new level

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Re: clutch/trans noise diagnosis.
« Reply #7 on: October 16, 2017, 10:07:51 AM »
I had a truck with a bad TO bearing. Never fixed it. Everyone called it Chewbacca  :rotflmao:
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Offline MattG

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Re: clutch/trans noise diagnosis.
« Reply #8 on: October 16, 2017, 01:33:20 PM »
The throwout bearing mine does that all the time I replaced it three or four times they just go bad so fast
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Offline Space Shuttle Commander

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Re: clutch/trans noise diagnosis.
« Reply #9 on: October 16, 2017, 02:02:45 PM »
is it a gargaling noise....

most trannies make that noise
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Re: clutch/trans noise diagnosis.
« Reply #10 on: October 16, 2017, 02:17:40 PM »
It's a new noise fwiw
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Offline markus68

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Re: clutch/trans noise diagnosis.
« Reply #11 on: October 16, 2017, 02:52:28 PM »
I have the same noise now....winter project....jackstands and a creeper (can't wait) lol
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Re: clutch/trans noise diagnosis.
« Reply #12 on: October 22, 2017, 05:52:51 PM »
So a new to bearing fixed the issue. Bad news was once I got everything buttoned up the clutch wouldn't disengage. I pulled it all apart and reassembled, not rushing so much and everything is bueno. I must have misaligned the clutch or pressure plate. Good news is i can do the whole jiob solo in 3 hours
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Offline MattG

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Re: clutch/trans noise diagnosis.
« Reply #13 on: October 22, 2017, 06:21:35 PM »
Told ya it was a TO
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Offline King of the Hill

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Re: clutch/trans noise diagnosis.
« Reply #14 on: October 23, 2017, 06:24:09 AM »
So a new to bearing fixed the issue. Bad news was once I got everything buttoned up the clutch wouldn't disengage. I pulled it all apart and reassembled, not rushing so much and everything is bueno. I must have misaligned the clutch or pressure plate. Good news is i can do the whole jiob solo in 3 hours


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Offline Right Wing Curmudgeon!!!

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Re: clutch/trans noise diagnosis.
« Reply #15 on: October 23, 2017, 07:48:43 AM »
Check back in a month or so and let us know how it sounds! :mrgreen:
03 Rubicon, 4 inch Clayton Short Arm Lift, Rokmen TT and Gas Tank Skids, TW DS front and Rear, 1 inch Daystar BL, 35x12.5-15 Cooper STTs, Warn 9.5ti winch.

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Offline Mr. Clean

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Re: clutch/trans noise diagnosis.
« Reply #16 on: October 23, 2017, 08:09:00 PM »
Glad it worked out...
I have no idea what I'm doing... but I did stay at a Holiday Inn Express last night.