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Transmission bell housing clutch Fork Noise. Help

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Old 03-09-2013, 07:07 AM   #1
Jeff3004x4 [OP] Jeff3004x4 is offline
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Transmission bell housing clutch Fork Noise. Help

I know that this is a common topic on this site and problem for Tacoma owners in general. I too have an annoying clutch noise but I think my noise is different than what most people experience. I have diagnosed my noise to be coming from the clutch bell housing area, where the slave cylinder contacts the clutch fork. I hear the noise coming from the transmission bell housing when the clutch pedal is depressed for 80% of the pedal travel. Last weekend I sprayed white lithium grease into the square boot coming out of the transmission and the noise went away for a few days. I have searched multiple times and cannot find a solid answer on this. I called my dealer today and they told me "ALL clutch related components are wear items only covered by the BASE warranty", which I am beyond. I work on cars and can fix this myself, basically I am posting this to see if anyone else has had this specific problem with a 5 speed manual transmission and has fixed the problem. Any information will be appreciated, thank you in advance.
Truck:
2010 Tacoma 4x4 4cly 5spd 39,000 miles
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Old 03-09-2013, 07:56 AM   #2
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First suggestion, do not spray any grease into the bell housing area at all. That grease can get caught up in your clutch plate. Not that is always will, but it is a risk.

I have seen a lot of these over the past year where the ball socket for the clutch fork gets dry, and begins to runs. Unfortunately once it starts to get rusty, lubrication of that spot is short lived. Unfortunately the only way to be sure to get rid of that noise (Assuming of course that the noise is 100% the fork pivot point) is to remove the transmission, pull the clutch fork, and unbolt the pivot ball, then clean it or replace it (Not sure if the 2010 has a removable ball or not) and then apply a generous amount of wheel bearing grease to the ball and fork contact point. I really think Toyota, as well as many others that I have seen over the years, dropped the ball on this one. A teflon ball socket cover is very inexpensive, and should have been included on every manual transmission out there. Short of throw out bearing noise, this is the most common noise complaint I have ever had come into any shop I have ever been in, as far as a manual transmission.
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Old 03-09-2013, 08:18 AM   #3
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Based on the noise I am hearing and the fact that I sprayed grease in the area and it went away I think you are correct. If it was the throw out bearing I would expect it to make noise when the truck is running and go away when the clutch pedal is pushed down. I am capable of performing the repair to fix the problem, it just doesn't seem right. Anything that requires me to remove my transmission should be covered under the drive train warranty. Also me removing my transmission should void my drive train warranty (assuming Toyota call tell I removed it). Anyway, thank you for the info, I'm going to research this and tackle the project when the snow melts and I can get the truck on my buddy's lift.
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Old 03-09-2013, 10:42 PM   #4
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A bad TOB is not necessarily only found when the clutch is pushed down. Many TOBs actually make the noise when the pedal is pressed down, due to that is when the TOB bearings are under the most stress. I feel for you on the warranty issue. Just because you remove your own transmission though, will not void your warranty. They cannot void your warranty for repairing your own vehicle. Also they cannot void your warranty due to someone else working on it, unless the part replaced by said shop is what failed. If you removed your transmission and replaced the pivot piece, or repaired it, and then say a gear went out in the transmission, or a short fork, they can't void your warranty. The dealership can CLAIM that they can, but they cant. I believe it falls under the Moss-Ferguson Act.
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Old 03-10-2013, 09:36 AM   #5
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I was getting a squeaking noise from the pivot ball exactly like Bama said, every time I disengaged the clutch. Using a mirror and bamboo skewer with a dab of teflon grease on the end, I was able to pull the fork forward enough to get some grease in the area. Afterward I pumped the clutch pedal several times, and repeated the procedure. I haven't heard any more squeaking since then, about 9 months ago.

Keep in mind that I had to remove the slave cylinder from the bell housing. I just let it hang as it only needed to be moved about a quarter of an inch to pull the fork forward.

Hope this helps.
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