390 Clutch question
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New User
Joined: Apr 2001
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From: Canada
390 Clutch question
Last year, I blew a tranny seal on my four speed. Basically, gear oil was drooling from out of the inspection plate and the clutch was chattering and slipping.
This spring I took the tranny out and replaced the seal. While in there I put a new clutch, pressure plate and release bearing. I also had the flywheel machined and the ring gear replaced.
The problem is that the clutch still chatters a bit occasionally. I haven't put much wear on it. Can I expect this to get better? Is this common for for "lever" type clutches? Is it a heating issue?
(I've pulled the cover off and everything is still dry.)
Thanks in advance.
This spring I took the tranny out and replaced the seal. While in there I put a new clutch, pressure plate and release bearing. I also had the flywheel machined and the ring gear replaced.
The problem is that the clutch still chatters a bit occasionally. I haven't put much wear on it. Can I expect this to get better? Is this common for for "lever" type clutches? Is it a heating issue?
(I've pulled the cover off and everything is still dry.)
Thanks in advance.
Thread Starter
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New User
Joined: Apr 2001
Posts: 20
Likes: 0
From: Canada
390 Clutch question
OK upon reviewing what I have done, here is what I missed:
I didn't replace the pilot. (There were no noises with clutch dis-engaged - still aren't)
I didn't replace the bearing retainer on the tranny...could be a cause.
I forgot to re-align the driveshaft..the old 90 degree rule. Does it matter on a truck that has ujoint-shaft-steady bearing-spline-ujoint-shaft-ujoint? (going from front to back.)
Any Ideas?
Like I said before, it only chatters occasionally.
I didn't replace the pilot. (There were no noises with clutch dis-engaged - still aren't)
I didn't replace the bearing retainer on the tranny...could be a cause.
I forgot to re-align the driveshaft..the old 90 degree rule. Does it matter on a truck that has ujoint-shaft-steady bearing-spline-ujoint-shaft-ujoint? (going from front to back.)
Any Ideas?
Like I said before, it only chatters occasionally.
Thread Starter
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New User
Joined: Apr 2001
Posts: 20
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From: Canada
390 Clutch question
OK doing yet even more research. I've been told that the best thing to do is to make sure the drive shafts are "in phase". I've also been told that I should make sure that they are 90 degrees out of phase. Which one is right?
Post Fiend
Joined: Apr 2002
Posts: 7,157
Likes: 1
From: Central Kali
390 Clutch question
Hi, I started using the diaphram type clutch a few years ago. was not a high dollar unit, just a standard type from a local clutch parts house. It is much less prone to chatter then a lever type. Also the effort to push in the pedal is lower. I added a stronger return spring to make it feel more like normal. I also think some shops do a better job of surfacing a flywheel then others, may be the equipment.
Your driveshaft shouldn't affect chatter. Would have to look it up but I think in-phase is correct for the u-joints. I've never had chatter get better with use. I have seen lever type pressure plates with worn levers where the bearings pushes on them.
Your driveshaft shouldn't affect chatter. Would have to look it up but I think in-phase is correct for the u-joints. I've never had chatter get better with use. I have seen lever type pressure plates with worn levers where the bearings pushes on them.
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