Edited 17 July, 20241 yr by hbkiran

 

Since the articles were scrolling, I am writing that they were deleted after editing the topic.

Hello I am using a 1994 Skoda Forman, I felt the clutch was slipping during a long journey, and I drove the last 600 kilometers of the journey like this. I bought a new clutch set, domestically produced in my country. There were slight cracks and shine on the flywheel surface. I cleaned the surface without processing and installed it. By the way, the old clutch I removed from it was not bad either. When I tested it with the new clutch set, I saw that it was slipping again. I used it like this for 50-100 km, nothing changed. I decided to fix the flywheel surface on the lathe. I disassembled it again and took the flywheel to the workshop. Some sawdust was removed from the surface. In the same way, sawdust was removed from the pressure plate connection surface. I put it back together, and the result is disappointing. It slips again. , I decided to buy a flywheel, thinking that the flywheel was not processed well, but the new one is not available in my country. I found a used flywheel. The condition looked good. The seller claimed that it was removed from a running engine. I bought it. I installed the flywheel and put it together. There was no shifting in 1st and 2nd gear, but when I suddenly pressed the gas in other gears, the tachometer needle suddenly jumped to 5000. - It reaches 6000 rpm, but the vehicle does not accelerate at all, it was holding on to the accelerator pedal slowly. I drove for 300 kilometers on a winding road with lots of hills, thinking that maybe the clutch would get used to it, but nothing changed. I can go up the steepest hills in 1st gear without any problems, but on these very steep hills I cannot accelerate and shift to 2nd gear. . I adjusted the clutch cable to the same distance as the brake pedal. What am I missing? Finally, I started to think that the clutch set is of poor quality. I ordered the SACHS brand, it has not arrived yet, I will install it when it arrives, but I am afraid that it will not be there again. I am also attaching the photos of the used flywheel and its assembly that I just bought. Is there something I did wrong? Or is the problem somewhere else? Also, when I go downhill in gear, after a few seconds, the rev needle suddenly rises, the engine noise increases, and when I lightly touch the gas pedal, the rev level returns to normal. Thanks in advance for your answers

What sort of cable is it? Does it have a self adhuster/ ratchet mechanism? You should have some fee play on the pedal. If over adjusted then the clutch may slip.

3 hours ago, hbkiran said:

When I tested it with the new clutch set,

Including new diaphragm spring?

 

Did you put in a new release bearing, something doesn't look quite right here to me

 

 

I'd also try what Blue8793841 said, and have a play with the cable adjustment, I know other people have issues with the cable after fitting a new clutch.

6 saat önce, Blue8793841 dedi ki:

Ne tür bir kablo? Kendi kendini ayarlayan/cırcır oranları var mı? Pedalın biraz düzenli olması gerekir. Aşırı ayrışmaya bağlı olarak debriyaj kayabilir.

It is just a cable that allows adjusting the pedal gap. As I tighten the screw on it, the release bearing starts to come into tighter contact with the diaphragm spring. I just let it touch and stop tightening the screw when the gap runs out.

6 hours ago, R_U_AFA said:

Yeni diyafram yayı da dahil mi?

 

Yeni bir serbest bırakma yatağı mı taktınız, burada bir şeyler bana pek doğru görünmüyor

 

 

Ayrıca Blue8793841'in söylediklerini deneyip, kablo ayarıyla oynamanızı öneririm. Yeni bir debriyaj taktıktan sonra kabloyla ilgili sorun yaşayan başkaları da olduğunu biliyorum.

The diaphragm spring and release bearing are also new, the release bearing can move smoothly. When I move the release lever after installing the gearbox, I can hear it sliding smoothly and hitting the diaphragm spring. I stop adjusting the cable when there is enough space for it to touch the bearing.

7 minutes ago, hbkiran said:

It is just a cable that allows adjusting the pedal gap. As I tighten the screw on it, the release bearing starts to come into tighter contact with the diaphragm spring. I just let it touch and stop tightening the screw when the gap runs out.

I'm having real difficulty following what you think you're doing here, and when you're doing it.

 

To adjust the clutch you should normally:-

1. Install the new parts.
2. Reassemble the gearbox etc.
3. Now, and only now, adjust the clutch cable to achieve a free play of 12 to 25mm before there is any movement of the clutch assembly.

measure clearances

I agree there should be free play but not of the magnitude stated (12-25mm) unless that was measured at the pedal which is incorrect.

 

 You say "I stop adjusting the cable when there is enough space for it to touch the bearing. "

 

The adjustment should be made to leave some clearance before the release bearing contacts the pressure plate, 5mm measured at the clutch arm cable end would be a rough and ready figure.

1 hour ago, J.R. said:

Serbest boşluk olması gerektiğine katılıyorum ancak belirtilen büyüklükte (12-25 mm) olmamalı, tabi ki pedalda ölçülmemişse bu yanlıştır.

 

 "Kablonun yatağa değecek kadar boşluk olduğunda ayarlamayı bırakıyorum" diyorsunuz.

 

Ayarlama, debriyaj rulmanının baskı plakasına temas etmesinden önce bir miktar boşluk bırakacak şekilde yapılmalıdır; debriyaj kolu kablosu ucunda ölçülen 5 mm, kabaca bir rakam olacaktır.

I may be expressing it incorrectly because I use Google translate. I attach the cable exactly as you said. When the bearing almost or slightly touches the pressure plate, I stop tightening the nut at the end of the cable. When the clutch does not shift at low speed, I slowly press the clutch pedal. It is almost separated in the middle. If I had brought the bearing too close to the pressure plate, I think it should have separated as soon as I lightly pressed the pedal.

Are you sure the new parts are correct and any chance you have put the friction disc in the wrong way?

9 hours ago, Blue8793841 said:

Yeni parçaların doğru olduğundan emin misiniz ve sürtünme diskini yanlış takmış olma ihtimaliniz var mı?

The new clutch was sold as a set and the code on it confirms that it belongs to this vehicle. There is no way to install the friction disc upside down, I tried it, the middle protrusion part touches the flywheel bolts and you cannot replace the pressure plate in this way, it is immediately obvious that something is wrong. I am about to receive the Sacsh brand clutch set. I will replace all of them again this weekend. The friction disc, pressure plate and pressure bearing. I hope it will not slip this time. I have a travel plan of approximately 2500 km. If it slips, I have to go uphill in 1st and 2nd gear. Fuel consumption also increases considerably.

Any news? 

On 28.07.2024 at 14:32, Thefeliciahacker said:

Haber var mı? 

Hello,
I installed the new clutch pad set and now I went on a long journey. I traveled 1200 km. The clutch slips again while driving. 1.2. The gears accelerate without shifting unless the road is too steep. 3.4.5. In gears, it slips when you give sudden gas on slight hills, but when you press the gas pedal slowly, the slip decreases. When I first set out on the road, I was hoping that the brake pad would get used to the flywheel after 1200 km, but it did not happen. I hope the pad gets used to the flywheel on the return of the same road. By the way, there is a situation that I cannot understand, for example, when going downhill in 5th gear without pressing the accelerator pedal, the revs go up to 5000-6000, with a slight touch of the accelerator pedal, it reaches 3000 revs, while it continues like this for a while, the revs go up to 5000-6000 again, by pressing the brake, the revs decrease. I want to see it, but it doesn't decrease proportionally with the braking, it decreases very late. I wonder if I should look for the clutch slipping somewhere else. I think there might be a problem in the gearbox. I can't find out how the gearbox could cause this. As I mentioned above, when going downhill, I think the increase in speed may be due to the ignition system malfunction, but in normal driving, everything is normal. I hope I can get a solution as soon as possible.

Is there any chance you have got grease or oil on the flywheel, centre friction disc or clutch cover? Too much grease on the splines flung off and contaminated the system?

What sort of actuator does it use? The diamond sort of shaped piece with a ball on one end? Maybe that is bent not fully disengaging the clutch.

3 hours ago, Blue8793841 said:

Volan, merkez sürtünme diski veya debriyaj kapağında gres veya yağ olma ihtimali var mı? Dişlilerdeki çok fazla gres fırlayıp sistemi kirletti mi?

I am absolutely sure that there is no oil because I have disassembled the gearbox 4 times and it looks clean every time.

The fork has to be bent. 

3 hours ago, Blue8793841 said:

Ne tür bir aktüatör kullanıyor? Bir ucunda top bulunan elmas şeklindeki parça mı? Belki de bu, kavramayı tam olarak devre dışı bırakmayan bükülmüş bir parçadır.

clutch release system as seen in the picture, after installing everything, when I move the iron to which the rope is attached with my hand, I feel that the bearing is in contact with the pressure spring, when I install the rope in its place, I only tighten it to close the gap, I do not do extra tension

Can you adjust the fork? Looks misaligned on photo but it's hard to tell.

The sleeve in which the release bearing slides on also looks damaged?

1 minute ago, Blue8793841 said:

Çatalı ayarlayabilir misin? Fotoğrafta hizasız görünüyor ama söylemek zor.

There is no adjustment mechanism on the fork. When the bearing is not installed, it slides down a little as in the photo, but when it is installed on the bearing, it aligns anyway. When you check it in neutral without installing the gearbox, the bearing moves easily onto the socket pole shaft without getting stuck at all.

Does the bolt on the fork just screw into a hole in the rod? Are there bushings missing from the rod?

Everything you have mentioned previously seems to be correct, have we also went through the centre plate being backwards?