Had my clutch replaced on Thursday. When they had it out I went to the dealer to look at the parts. The new clutch is that - new. The old friction disk and pressure plate are made by Luk. The new one is made by Aisin. They look nothing alike.
Friction Disk
The Luk has 4 dampening spring sets. Each is a dual spring (inner and outer) with a free sliding spring / mass inside. The Aisin also has 4 sets, but it is a single spring with captive ends to prevent the spring from rotating. Only two of the sets had a sliding mass inside.
By the way, one of my springs on the original clutch would rotate indicating it may be out of spec (weak, short, etc.). I believe this may be the issue we have experienced.
Pressure Plate
The Luk pressure plate has 18 "fingers" on it which end up being fairly small where the throwout bearing rides against them. The Aisin has 15 fingers and looks more typical of clutches I've worked with in the past.
The clutch definitely feels more solid. I wasn't having the problem as bad as you so I want to give it a couple of weeks before I pass judgement. They did not replace my throwout bearing (I only had 5000 miles on it), and my first impression is that the clutch lets out much closer to the floor which I don't like. I'm having them check if the throwout bearing was redesigned as well and could that have an effect on the clutch engagement position. Possibly the new clutch has a different stack up longitudinally and requires a different bearing carrier length to achieve the same pedal engagement position.
Overall I think the change is going to be positive and so far it feels good. I'll keep you posted.
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2006 Indigo Ink Pearl Tacoma Double Cab 4x4
6-spd Manual
TRD Off Road
Tow Package
So I guess my dealers service manager was correct when he said it's a new clutch from a different manufacturer.
Thanks for posting the details. I also had the feeling in the first few days that the clutch lets out closer to the floor, but I am ok with that (don't feel it anymore, of course). What was important to me was that the chatter is gone, and after a few thousand miles now, I can report back that there was not a single chatter.
I am a happy Tacoma owner now. Well, after they fix my radio next week (hopefully!).
I need some more miles on the truck but I changed the seat position a little and I might be able to live with the clutch release point if they can't figure something out. Glad to see you've got some time on yours and it continues to work well.
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2006 Indigo Ink Pearl Tacoma Double Cab 4x4
6-spd Manual
TRD Off Road
Tow Package
Radio turns on and off as it pleases. I should say the volume does. When it cuts off, there is no sound and no audio controls can be changed (volume, balance, fader, ....), but the radio is "on" and radio stations can be changed.
It's the JBL with the 6 CD changer.
With the shuddering going on, it sounds like the flywheels either were machined too rough or improperly from the factory and it grabs into the friction material on the clutch disc too heavily. Could be the slave cylinder and clutch hydraulic system is not working properly.
Maybe its the friction material in the clutch disc itself, absorbs too much moisture, causing it to grab.
I'm not an engineer, just a dumb ole farm boy that has installed clutches in vehicles from John Deere tractors to Pickup trucks
Got my clutch replaced (for the second time with less than 12000 mi. on the truck!) in December and I'm happy to report that I only had problems the first week after I had it done. I had the Aisin parts installed, but the dealer didn't resurface the flywheel. I'm guessing that's the reason I had some chatter during the first week of driving on the new clutch. Since that week, nothing. It's been about 6 weeks now, so I think I can declare it fixed.
I have to say though, that my dealer claimed that Toyota has used clutches from both Luk and Aisin from the start and that they have no control over which one they get...it's a supply issue. If that's true...and if it's true of the assembly line as well, that would explain why some of us had the problem and others didn't. Just a thought...
The image with the part numbers that Steve posted is no longer available. Could someone please repost it or send it to me? TIA
In the summer I did notice a little bit of vibration a few times off the line. Not sure if it was mixture of too much gas, turning and the traction control or whatever but I definitely dont see an obvious problem like a few of you have had. Aisin makes a lot of parts for Toyota, I'm surprised they produced some faulty components.
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Roger
05 Tacoma 4x4 TRD DC Off-Road
Shrockworks Front Bumper, K&N Intake/AEM Filter, XM Satellite, Retrax Tonneau Cover and Yakima track rack system, OEM roof rack
Probably a day late and a dollar short, but the primary reason for clutch chatter is clutch disc contamination. This can either be embedded dirt or oil from the rear seal for example. Usually oil is the culprit. This is a good reason why it is important to always replace the rear engine seal when changing the cutch. It's a 5 dollar part. I read through the replies, and couldn't find one that brought out disc contamination as the reason for chatter.
Aisin makes a lot of parts for Toyota, I'm surprised they produced some faulty components.
For the record, the clutch I had a problem with was the Luk clutch. The Aisin is the replacement.
Clutchman: Did not find any contamination on the flywheel when everything was disassembled. One of the dampening springs was loose and I suspect this was the root cause of the problem.
Clutch feels better every day. They didn't resurface my flywheel either, just ran a scotch brite pad over it. Pedal release feels better too now that I've driven it for a couple of weeks. I'm definitely pleased.
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2006 Indigo Ink Pearl Tacoma Double Cab 4x4
6-spd Manual
TRD Off Road
Tow Package
Thank you so much!!! I have my second appointment with the dealer tomorrow for the exact same problem. Last time the service advisor told me it's normal and to never apply the accellerator when engaging the clutch..."with today's new clutch materials and all"...yeah right. I requested a different service advisor for tomorrow's appt.
My truck jumps like crazy with anything more than a granny start in 1st or Reverse - especially when cold. I don't think that it's moisture related because my vehicle (06 prerunner, v6, 6sp, trd offroad) is always garaged and the problem occurs in wet or dry weather. I sometimes hate driving the truck because of this problem. Thank you for posting your solution!
I will post the results of tomorrow's appt. Other issues: constant suspension-related squeek and center wheel caps that fall off.
Service guy can't duplicate the problem with the clutch chatter. The problem is much worse when the vehicle is cold, so I left it there overnight so they could try it again in the morning. I don't have much confidence in them.
My Tacoma's other problem is a constant squeek (or high pitched rattle as the ASM called it) as I drive - worse on bumpy roads, but it pretty much does it all of the time. Service guy first said he couldn't hear it, then said it was normal differential shift sound, and there's nothing they can do about it. I am embarrassed to drive this thing down the road. The truck looks great but it sounds like '64 Rambler with all the rattling, creaking sounds it makes (no offense to Rambler owners).
I guess that the next step is to try another dealership or call the area rep.
I will update the group if service can acknowledge the clutch chatter tomorrow.
M.Paul
Service guy can't duplicate the problem with the clutch chatter. The problem is much worse when the vehicle is cold, so I left it there overnight so they could try it again in the morning. I don't have much confidence in them.
My Tacoma's other problem is a constant squeek (or high pitched rattle as the ASM called it) as I drive - worse on bumpy roads, but it pretty much does it all of the time. Service guy first said he couldn't hear it, then said it was normal differential shift sound, and there's nothing they can do about it. I am embarrassed to drive this thing down the road. The truck looks great but it sounds like '64 Rambler with all the rattling, creaking sounds it makes (no offense to Rambler owners).
I guess that the next step is to try another dealership or call the area rep.
I will update the group if service can acknowledge the clutch chatter tomorrow.
M.Paul
There is a TSB out for a rear suspension noise. if that is the problem I suggest you print out a copy of it, slam it down on their service counter and tell them to get off their arsches and fix the problem. Too many times those guys blow smoke just to get out of having to do warranty work.
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Roger
05 Tacoma 4x4 TRD DC Off-Road
Shrockworks Front Bumper, K&N Intake/AEM Filter, XM Satellite, Retrax Tonneau Cover and Yakima track rack system, OEM roof rack
There is a TSB out for a rear suspension noise. if that is the problem I suggest you print out a copy of it, slam it down on their service counter and tell them to get off their arsches and fix the problem. Too many times those guys blow smoke just to get out of having to do warranty work.
I saw a TSB for the rear suspension noise, but it only applies to 2005 models. Does anybody know different. Rather than fork down the money for all of the TSB's if anyone can post just the TSB number, description, and affected vehicles, that would be great.
I don't know why the dealership wouldn't want to do the warranty work??? Doesn't Toyota pay them for this? What is their incentive to play dumb? My clutch chatter is so bad that it takes a lot of effort to avoid it, yet I can tell they are doing their best to NOT make it happen during the test drive.
I wonder if other nearby dealerships will play the same game? Will the area rep also turn their heads? It's very frustrating. I paid a lot of money for my truck and it's frustrating and embarrassing to drive.
mpaul, I'd leave the truck overnight (mine was also worse with a cold engine). Then, show up the next morning, and take a friend (who gave you the ride?) as whitness. Have them take the truck to an uphill slope, and tell them to start in second gear.
That most likely will amplify the problem. Of course, they'll have to slip the clutch a bit, but that should not cause it to chatter and vibrate like crazy. Watch the mechanics nose: I actually saw bookers flying out from the shake, LOL!!!!
Really, occasionally, my chatter was so bad that I thought the engine will drop out of that thing. Even my 4 year old would make a scared face and ask what the heck that was.
After the fix, there is nothing. Clutch works as smooth as it gets, and my dealer told me that this also fixed it on another truck. Get 'em to do it, be nice but persistant!
Re: 06 Tacoma clutch problem
Re: 06 Tacoma clutch problem
Linear Mode
