Clutch chatter with new clutch

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J

JacobsBarn80

Joined
Aug 3, 2024
Threads
7
Messages
50
Location
Australia
Hey all,

Ive just finished a rebuild which is in another thread ill update soon to finish it off. Everything is going well with the engine exept the clutch is shuddering. Does it when taking off, down shifting and reverse.

Its got a new 4terrain clutch, throwout, pressure plate, pilot bearing and the flywheel was machined.

I think ive missaligned it when installing, my engine crane was around 5cm to short so had to pull them together that little bit at the end, when doing so i heard a little ping. Was thinking i bent a finger but doesnt make any noise or anything when pushing the clutch in...

Only thing thats giving me a little bit of hope is that i moved it back and forward like 5 meteres when i first startes the car and it didnt happen then... following that i bled the clutch (by myself by raising the hose and bottle higher than the slave) and changed engine and trans mounts

Either way ive got an enderscope coming to peek inside it to see if i can spot anything... dreading taking the trans out.... let me know what you all think!!!
 
My first thought was engine mounts, but you've covered that.

Biggest concern I'd have would be the pilot bearing, given the wonky alignment. How much force were you applying when you heard the 'ping'? Problem with the pilot of course is a bore scope won't see it.

In all likelihood, you've got nothing to worry about yet. You may hsve a bit of oil on the flywheel or plate. I'd put a few hundred kilometres on it and see whether the chatter disappears before I spent too much time looking into it.
 
My first thought re chatter is always oil on a surface though there can be many other causes. If it doesn't seem to be doing damage you may be best served to live with it for a bit to see if it starts to improve with time and give yourself time to recover from the big job and also make plans for the best way to address the chatter, should it persist for a while. I've not often had luck with clutch chatter resolving itself but it has happened a few times...
 
Chamba said:
My first thought was engine mounts, but you've covered that.

Biggest concern I'd have would be the pilot bearing, given the wonky alignment. How much force were you applying when you heard the 'ping'? Problem with the pilot of course is a bore scope won't see it.

In all likelihood, you've got nothing to worry about yet. You may hsve a bit of oil on the flywheel or plate. I'd put a few hundred kilometres on it and see whether the chatter disappears before I spent too much time looking into it.
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Thanks for the insight, i might sanity check the mounts just to make sure haha. Wasnt much force i did nees to pull together with bolt, did it in a crossing pattern and changed bots if i felt resistance. Done around 400km on it atm but ill leave it alone for a bit longer.
 
jpoole said:
My first thought re chatter is always oil on a surface though there can be many other causes. If it doesn't seem to be doing damage you may be best served to live with it for a bit to see if it starts to improve with time and give yourself time to recover from the big job and also make plans for the best way to address the chatter, should it persist for a while. I've not often had luck with clutch chatter resolving itself but it has happened a few times...
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Hey jpoole!

I did clean the flywheel and pressure plate pretty well.. not the clutch disc itself if that matters. Whats your thoughts on master and slave cylinders/ air in lines. Did a good amount of forum searching and found a couple cases of that causing chatter... might be best to replace anyway
 
How did you "pull them together" when the crane was a little short?
It is very possible that you bent the clutch splines doing the above method. I did something similar. Read about it below. Post 378

logicbyondreaso

Build Post in thread '1998 HDJ80 with 1HDT - Refresh'

We all get distracted and make mistakes.... well here is my story:

When I finished the engine work I mated the transmission to the engine in the garage and then installed them together. Once everything was installed and I took it for the first drive. I pulled over about 5 miles down the road to check for leaks and noticed transmission fluid started to flow from the bell housing. No fluid trail behind the vehicle so it just started to happen or something else was going on. I turned the engine off and got towed back to the shop.

I started to think about what I could have done wrong and...
  • Like
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JacobsBarn80 said:
Whats your thoughts on master and slave cylinders/ air in lines
Click to expand...
As background, I've dealt with hydraulic clutch issues a handful of times and don't recall them ever causing chatter. What I think though is that I'd try anything relatively easy before committing the pulling things apart to replace/repair things inside the bellhousing. I'd use this as a case to check things out and to test drive it enough to get a good feel for what it's doing and when (as long as it's not risking damage).

Another easy thing to check are simply that all is snug as I've seen chatter-like behaviors caused by slop in engine/tranny mounts, loose bell housing to engine bolts, etc. where things can move around under torque.

I've also taken things apart prematurely only to find afterwards that the issue(s) could have been resolved with far less work. An issue with the clutch seems somewhat likely in your case but I'm just trying to encourage patience and mental work before physical work and long tasks.
 
logicbyondreaso said:
How did you "pull them together" when the crane was a little short?
It is very possible that you bent the clutch splines doing the above method. I did something similar. Read about it below. Post 378

logicbyondreaso

Build Post in thread '1998 HDJ80 with 1HDT - Refresh'

We all get distracted and make mistakes.... well here is my story:

When I finished the engine work I mated the transmission to the engine in the garage and then installed them together. Once everything was installed and I took it for the first drive. I pulled over about 5 miles down the road to check for leaks and noticed transmission fluid started to flow from the bell housing. No fluid trail behind the vehicle so it just started to happen or something else was going on. I turned the engine off and got towed back to the shop.

I started to think about what I could have done wrong and...
  • Like
  • Sad
Click to expand...
This is exactly what im hoping i didnt do.... though does seem possible. Ill let you know how it goes once i get that camera, this is exactly the thread i was looking for tho!
 
Mag71k5 said:
Post a video of the noise if you can! Im experiencing some noise after my h152f install, and maybe have to pull it.
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Ill see if i can get some time before chistmas to post something. Mine is more of a shuddering when going taking off more than that chatter.
 
BIt of an update, still having the issues. Potentially looks like one of the fingers might be bent inwards which could be causing it. Anyone know a good tansmission jack avaliable in AUS cant seem to find many
 
JacobsBarn80 said:
BIt of an update, still having the issues. Potentially looks like one of the fingers might be bent inwards which could be causing it. Anyone know a good tansmission jack avaliable in AUS cant seem to find many
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Looking forward to hearing what you find when you drop it.
 
Hey mate, little further down the track but what did ya end up finding, ive got litterally the exact same issue aswell after a brand new clutch install and its doing my head in haha, cheers
 
NzVXCruiser said:
Hey mate, little further down the track but what did ya end up finding, ive got litterally the exact same issue aswell after a brand new clutch install and its doing my head in haha
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Sorry for the late reply, still having the issue. I've just been putting it off and it hasn't gotten better. Currently my plan is to replace the master and slave cylinder, though technically they shouldn't cause it, I know my master isn't the best so might as well.... otherwise ill need to buy a transmission jack which is a but pricey!! Did you get you flywheel skimmed? Also did you have any alignment issues when putting it back in?
 
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