Clutch Release Fork - help
05-01-02, 01:01 PM
#1
Slave2TheFD
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Clutch Release Fork - help
I just finished putting my engine back into the car but I think I did the clutch fork part wrong.
The clutch and flywheel were already bolted to the engine.
I reached in through the access panel and pushed the lever toward the rear of the tranny, it clicked. Then I pushed it back and it hit the clutch.
Is this right?
Is it possible to correct with it all installed in the car?
Help!
Thanx!
-Jedon
From http://www.scuderiaciriani.com/rx7/clutch_install.html
"Reconnect the release collar to the pressure plate. Through the upper left service hole, swing the release fork end backwards. The throw-out bearing will snap in with a satisfying >click<. Check that it is firmly attached by wagging the fork back and forth. The release fork should stop no closer to the engine than the center of the inspection hole. "
The clutch and flywheel were already bolted to the engine.
I reached in through the access panel and pushed the lever toward the rear of the tranny, it clicked. Then I pushed it back and it hit the clutch.
Is this right?
Is it possible to correct with it all installed in the car?
Help!
Thanx!
-Jedon
From http://www.scuderiaciriani.com/rx7/clutch_install.html
"Reconnect the release collar to the pressure plate. Through the upper left service hole, swing the release fork end backwards. The throw-out bearing will snap in with a satisfying >click<. Check that it is firmly attached by wagging the fork back and forth. The release fork should stop no closer to the engine than the center of the inspection hole. "
05-01-02, 04:13 PM
#3
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Jedon
I think the click is the fork popping into position in against the pivot pin. The throw out bearing should be connected to the fork end and the fork will pivot on the pin so the throw out bearing will slide into the pressure plate fingers. If you look in and that is happening, you have it correct. If the throw out bearing is not attached to the fork, you need to remove the fork, align the bearing onto the fork and pop the pivot pin back in the holder again carefully.
Let us know how it looks,
Tim
PS The object is when you press the clutch pedal, the slave cylinder shaft pushes the clutch fork in. This pivots the fork and causes the throw out bearing to press against the pressure plate fingers. As the pressure increases on the fingers, the squeeze of the clutch against the flywheel decreases until it slips, then free spins. The pressure plate clutch surface pulls away from the clutch, thus disengaging the clutch from the flywheel.
I think the click is the fork popping into position in against the pivot pin. The throw out bearing should be connected to the fork end and the fork will pivot on the pin so the throw out bearing will slide into the pressure plate fingers. If you look in and that is happening, you have it correct. If the throw out bearing is not attached to the fork, you need to remove the fork, align the bearing onto the fork and pop the pivot pin back in the holder again carefully.
Let us know how it looks,
Tim
PS The object is when you press the clutch pedal, the slave cylinder shaft pushes the clutch fork in. This pivots the fork and causes the throw out bearing to press against the pressure plate fingers. As the pressure increases on the fingers, the squeeze of the clutch against the flywheel decreases until it slips, then free spins. The pressure plate clutch surface pulls away from the clutch, thus disengaging the clutch from the flywheel.
05-01-02, 04:27 PM
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and if it's not on correctly, then you'll have to pull it all out to work with it.. (After you do it a few times you can pull your exhaust and tranny in under 1.5 hours) There are only 2 bolts that hold the fork on, but there are also to guide pins to keep it in position. Have fun!
05-01-02, 05:08 PM
#5
Weird Cat Man
OK, don't fear. I bet you can fix this without pulling the engine out.
First... did you mess with the throw out bearing or the release fork? There are only two bolts, so I'm sure even if you did, you probably did this OK.
I'm guessing that the problem is that the release collar isn't snapping into the pressure plate right.
You say:
"I reached in through the access panel and pushed the lever toward the rear of the tranny, it clicked. Then I pushed it back and it hit the clutch."
This leads me to believe that you are reaching in with your hand through the wrong hole. There are 2 inspection plates. One on the bottom near the passenger's feet, and one that is up high on the side near the slave cylinder.
Start off by removing both of those. The "scuderiaciriani" instructions are speaking about having your hand in through the upper inspection hole on the driver's side near the slave cylinder.
If you reach into THIS hole, pulling toward the rear of the tranny would make the bearing hit the clutch. Pushing on the lever forwards would move the bearing/release collar away from the clutch. This is why I think you're reaching in through the other hole... your description of what happens is backwards. Heheh.
Anyhows.... lay under the car with your feet near the nose. You may want to remove the bolts holding the slave cylinder (not the hose, just the bolts holding it) and kinda move it out of the way a bit.
Remove both inspection plates.
Reach into the upper hole with your left hand, and reach into the right one with a long flathead screwdriver or something to poke at things with. Use a flashlight to help you see in through the bottom hole.
You should see that as you pull towards your body (towards the rear of the car) with your left hand, this forces the release collar into the pressure plate. When you get it all the way in, it should "click" in. If you now reverse the direction of the force with your left hand and push away from you, the release bearing/collar should partially pull back out from the pressure plate, but then it should STAY locked in there tight even if you force it by hand.
I have a picture at home of what you should see when you have done this right, but I can't access it right now... will post later on.
To test your setup, put the bolts for the slave back in snug (don't need to tighten down yet) and then go to the cockpit and push on the pedal. the clutch should operate normally. If you hear a loud bang/pop noise, the release collar wasn't wedged in there right and it popped out. Try again. If this happens over and over, it might be that the snap ring on the release collar isn't quite the right diameter to "grab". You can fix this if you're patient by using some screwdrivers in through the holes to expand your snap ring a little bit and trying again.
See:
https://www.rx7club.com/forum/showth...ight=snap+ring
Good luck, don't feel bad, I got this messed up the first time I tried it too!
Brian
First... did you mess with the throw out bearing or the release fork? There are only two bolts, so I'm sure even if you did, you probably did this OK.
I'm guessing that the problem is that the release collar isn't snapping into the pressure plate right.
You say:
"I reached in through the access panel and pushed the lever toward the rear of the tranny, it clicked. Then I pushed it back and it hit the clutch."
This leads me to believe that you are reaching in with your hand through the wrong hole. There are 2 inspection plates. One on the bottom near the passenger's feet, and one that is up high on the side near the slave cylinder.
Start off by removing both of those. The "scuderiaciriani" instructions are speaking about having your hand in through the upper inspection hole on the driver's side near the slave cylinder.
If you reach into THIS hole, pulling toward the rear of the tranny would make the bearing hit the clutch. Pushing on the lever forwards would move the bearing/release collar away from the clutch. This is why I think you're reaching in through the other hole... your description of what happens is backwards. Heheh.
Anyhows.... lay under the car with your feet near the nose. You may want to remove the bolts holding the slave cylinder (not the hose, just the bolts holding it) and kinda move it out of the way a bit.
Remove both inspection plates.
Reach into the upper hole with your left hand, and reach into the right one with a long flathead screwdriver or something to poke at things with. Use a flashlight to help you see in through the bottom hole.
You should see that as you pull towards your body (towards the rear of the car) with your left hand, this forces the release collar into the pressure plate. When you get it all the way in, it should "click" in. If you now reverse the direction of the force with your left hand and push away from you, the release bearing/collar should partially pull back out from the pressure plate, but then it should STAY locked in there tight even if you force it by hand.
I have a picture at home of what you should see when you have done this right, but I can't access it right now... will post later on.
To test your setup, put the bolts for the slave back in snug (don't need to tighten down yet) and then go to the cockpit and push on the pedal. the clutch should operate normally. If you hear a loud bang/pop noise, the release collar wasn't wedged in there right and it popped out. Try again. If this happens over and over, it might be that the snap ring on the release collar isn't quite the right diameter to "grab". You can fix this if you're patient by using some screwdrivers in through the holes to expand your snap ring a little bit and trying again.
See:
https://www.rx7club.com/forum/showth...ight=snap+ring
Good luck, don't feel bad, I got this messed up the first time I tried it too!
Brian
Last edited by Wargasm; 05-01-02 at 05:11 PM.
05-01-02, 05:35 PM
#6
Slave2TheFD
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Great thanx guys!
I did not do anything to the release collar, I was just moving the lever back and forth, I think it is for the backup sensor?
Is the slave cylinder the thing with two bolts that attaches above the starter and has a flex arm on it?
-Jedon
I did not do anything to the release collar, I was just moving the lever back and forth, I think it is for the backup sensor?
Is the slave cylinder the thing with two bolts that attaches above the starter and has a flex arm on it?
-Jedon
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05-01-02, 08:59 PM
#9
Weird Cat Man
Here is the picture I referred to in my previous post. Sorry the flash washed out the details so much.
This is what you see when lying on the floor as I described above looking in through the lower inspection hole. The key part to look at is in the middle. See the release collar? You can see that it's partially pulled out away from the pressure plate, but not popping all the way out. This is good. The release bearing is above it in the picture ....
Anyhow, you push the release collar/tip of bearing through the pressure plate hole, then when it springs back, it should 'catch' and be like this....
Ugh... damn pull type clutches!
Hehe
Brian
This is what you see when lying on the floor as I described above looking in through the lower inspection hole. The key part to look at is in the middle. See the release collar? You can see that it's partially pulled out away from the pressure plate, but not popping all the way out. This is good. The release bearing is above it in the picture ....
Anyhow, you push the release collar/tip of bearing through the pressure plate hole, then when it springs back, it should 'catch' and be like this....
Ugh... damn pull type clutches!
Hehe
Brian
05-01-02, 09:59 PM
#10
Slave2TheFD
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Thank you so much, after much prying and swearing I was able to get it like in your picture, although I did it before looking at your picture so did not know it was correct, just that the fork seemed to act the way it was supposed to so I figured that must be it.
Whew sure glad I did not have to pull it again!!
-Jedon
Whew sure glad I did not have to pull it again!!
-Jedon
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