Clutch trouble?
Elder User
Joined: Apr 2003
Posts: 673
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From: Maryland
You should have it on the road in no time, always goes faster the second time 
Be careful not to introduce any grime in the pilot bearing. Might want to clean and re-lube the trans input shaft just before you put it back in. Did you lube the shaft where the throw out bearing rides? I used a light coat of the assembly lube supplied with my Luk clutch kit.
Be careful not to introduce any grime in the pilot bearing. Might want to clean and re-lube the trans input shaft just before you put it back in. Did you lube the shaft where the throw out bearing rides? I used a light coat of the assembly lube supplied with my Luk clutch kit.
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Junior User
Joined: Mar 2009
Posts: 89
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From: Archdale NC
Not yet...I had time to get the flywheel bolted back on before the rain set in...hopefully I can finish it up tomorrow..and I still have another pak of the grease you spoke of...thats one thing at least I remembered from my "old" days with my street rods. This time was easier cause I just left the tranny on it's crossmember and put the front on a concrete block with wood blocks, and slid it back out of the way.
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Junior User
Joined: Mar 2009
Posts: 89
Likes: 0
From: Archdale NC
Well...got it all back together, and same results. Just won't hook up and go. Well, it will go but slipping really bad. Unless the disc is ruined from where I didn't clean the PP the first time I'm at a loss right now. I can hear like a whirring sound in neutral with the clutch pedal out. I just pulled it down in the woods behind my dads. Gotta leave out Wed. to go to a job in Texas. Driving a Ford out there too!Big Ford..Diesel, the boss's truck. Rides like a tank but it'll get us there.
Only thing else I can figure is maybe the flywheel, it had blue burn streaks in it, and probably is the original one to boot. But I'll tear it back apart when we get back I guess..least I'm gettin good at that!
Only thing else I can figure is maybe the flywheel, it had blue burn streaks in it, and probably is the original one to boot. But I'll tear it back apart when we get back I guess..least I'm gettin good at that!
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
First off good luck on the drive to Texas, it will be an experience if nothing else.
Sorry to hear the rebuild didn`t work. IT will not be the flywheel or the failure to clean the pressure plate the first time, I would not think. It still sounds like the pressure plate is not compressing the friction disc hard enough to the flywheel, either because it is the wrong clutch assembly or it is faulty or because the throwout bearing/slave cylinder is pressing on the clutch fingers with everything bolted up.
Forget about it for now and have another look when you get back.
Sorry to hear the rebuild didn`t work. IT will not be the flywheel or the failure to clean the pressure plate the first time, I would not think. It still sounds like the pressure plate is not compressing the friction disc hard enough to the flywheel, either because it is the wrong clutch assembly or it is faulty or because the throwout bearing/slave cylinder is pressing on the clutch fingers with everything bolted up.
Forget about it for now and have another look when you get back.
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Junior User
Joined: Mar 2009
Posts: 89
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From: Archdale NC
Yep, when i take it back apart I'm gonna take the clutch back where I got it and have them give me another one. I matched both the PP and disc up with the old ones, now the release bearing was a "new" design, but it was seated the same distance as the old one. I was watching close this time as I bolted the PP on and it was "loading pressure" as I tightened the bolts. Anyways I'll just get a new one and try again. Let yuns know.
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Junior User
Joined: Mar 2009
Posts: 89
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From: Archdale NC
Hello folks, just lettin yuns know I'm back from Texas...didn't care much for it. No internet, and a dry county to boot!
I managed to get my truck backed out of the woods, but the clutch was smokin by the time I got it out. Lettin it cool off now to get it back up on the ramps and start again. I was lookin at the play in the pedal. If I push it in by hand and let it out real slow, it gets almost all the way out, then the last 1/4 in. or so sorta pulsates the last bit, plus I can grab it after it's fully released and it's got about another 1/4 in. of play in it. Course that may be the nylon bushing on the end of the rod wearing out I guess.
Wondering if I would be better off just replacing everything, slave drive and master cylinder and all? Hate to spend the money but need my truck!
I managed to get my truck backed out of the woods, but the clutch was smokin by the time I got it out. Lettin it cool off now to get it back up on the ramps and start again. I was lookin at the play in the pedal. If I push it in by hand and let it out real slow, it gets almost all the way out, then the last 1/4 in. or so sorta pulsates the last bit, plus I can grab it after it's fully released and it's got about another 1/4 in. of play in it. Course that may be the nylon bushing on the end of the rod wearing out I guess.
Wondering if I would be better off just replacing everything, slave drive and master cylinder and all? Hate to spend the money but need my truck!
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Welcome back. A clutch pedal should have about 1in of free play. However yours has 1/4in so you would think it is not the hydraulic system that is not letting the pressure plate apply full pressure to the disc. Just to be sure have a look at the clutch pedal rod that goes through the firewall to the master cylinder, with the pedal fully up is that rod tight or loose? Could it be that the 1/4in of play in the pedal is coming from a worn pivot and there is actually no play in the pedal?
Something seems to be holding the pressure plate from fully compressing the plate to the flywheel. Unlikely to be the hydraulic system but I suppose, anything is possible.
Something seems to be holding the pressure plate from fully compressing the plate to the flywheel. Unlikely to be the hydraulic system but I suppose, anything is possible.
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Junior User
Joined: Mar 2009
Posts: 89
Likes: 0
From: Archdale NC
actually there is some play in the rod, it's definitely loose. The play in the pedal is from both the rod, and the pivot where it connects cause I can even move the pedal side to side just a bit, not much but it will move. 24 yrs wear would make me do that too I guess!!
When i say play in the rod I mean where it goes into the master cylinder
When i say play in the rod I mean where it goes into the master cylinder
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Well then it would seem that the problem is not with the hydraulic system. If you want to be absolutely sure you could try opening the bleed screw, put the truck in first and start it in gear and see if the clutch still slips. If it does then the problem is wrong friction plate, wrong pressure plate or wrong concentric slave cylinder and throwout bearing.
Might be worth a try but don`t run into anything!
Might be worth a try but don`t run into anything!
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Junior User
Joined: Mar 2009
Posts: 89
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From: Archdale NC
don't think i want to try that sittin on the ramps! Sides done got the driveshaft off. I'm gonna get another new clutch anyways, and carry the old one with me. Just waitin on some chilibeans to finish right now..then I know I'll have to work outside!!
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Junior User
Joined: Mar 2009
Posts: 89
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From: Archdale NC
Takin a break, I took the new clutch and stuff back and got a new one, this time I cleaned the anti-rust compound off with brake parts cleaner, the release bearing may have been part of the problem. The one I put on first would "bottom out" right even with the sleeve that it rides on, this other one I can push in about an inch further so I'm hoping that was it. Now I'm just having a time getting the tranny and engine to line back up! That part went easy the last two times...maybe I just ain't holdin' my tongue right..
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
Takin a break, I took the new clutch and stuff back and got a new one, this time I cleaned the anti-rust compound off with brake parts cleaner, the release bearing may have been part of the problem. The one I put on first would "bottom out" right even with the sleeve that it rides on, this other one I can push in about an inch further so I'm hoping that was it. Now I'm just having a time getting the tranny and engine to line back up! That part went easy the last two times...maybe I just ain't holdin' my tongue right..
Good luck.
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Junior User
Joined: Mar 2009
Posts: 89
Likes: 0
From: Archdale NC
Hello Folks,
new clutch is in again, still the same results, actually some worse. It won't even come off the ramps now. Starting to rain so when it stops tomorrow sometime I'll try the loosening the bleeder screw and see if that does anything...if it does hook up then would that mean the slave cylinder or master cylinder? Also if no change, which might be the likely culprit?
There might be some air left in there this time but I still don't see why it won't engage. I'm tired, frustrated, aggravated, and have a job interview Thurs. and still no truck. Plus we should be leaving out again soon this time for Maryland.
Anyways something will give tomorrow.
new clutch is in again, still the same results, actually some worse. It won't even come off the ramps now. Starting to rain so when it stops tomorrow sometime I'll try the loosening the bleeder screw and see if that does anything...if it does hook up then would that mean the slave cylinder or master cylinder? Also if no change, which might be the likely culprit?
There might be some air left in there this time but I still don't see why it won't engage. I'm tired, frustrated, aggravated, and have a job interview Thurs. and still no truck. Plus we should be leaving out again soon this time for Maryland.
Anyways something will give tomorrow.
Post Fiend
Joined: Jan 2005
Posts: 8,402
Likes: 10
I am astonished and disappointed. I felt sure the new clutch would work.
Look, a clutch is fairly simple. You have a flywheel bolted to the engine so it has to turn with the engine. You have a friction disc with a splined center thru which the transmission splined input shaft goes. The friction disc is pressed hard against the flywheel by the pressure plate and its springs which is bolted to the flywheel. So while the pressure is held on the disc everything must turn with the engine. It has to.
Could a build up of fluid pressure in the hydraulic system be holding the clutch release bearing in and so causing the clutch to slip? Well I suppose anything is possible. Probably worth checking. If that is the case then as you have fitted a new slave cylinder, the problem would be in either the flexi hose, a kinked or crushed hard line or the master cyl.
If opening the bleed screw makes no difference then I think it will have to be assumed the clutch is OK.
Very, very disappointing.
Look, a clutch is fairly simple. You have a flywheel bolted to the engine so it has to turn with the engine. You have a friction disc with a splined center thru which the transmission splined input shaft goes. The friction disc is pressed hard against the flywheel by the pressure plate and its springs which is bolted to the flywheel. So while the pressure is held on the disc everything must turn with the engine. It has to.
Could a build up of fluid pressure in the hydraulic system be holding the clutch release bearing in and so causing the clutch to slip? Well I suppose anything is possible. Probably worth checking. If that is the case then as you have fitted a new slave cylinder, the problem would be in either the flexi hose, a kinked or crushed hard line or the master cyl.
If opening the bleed screw makes no difference then I think it will have to be assumed the clutch is OK.
Very, very disappointing.