Question 1

What role does the Clutch Disc play in the key components and functions of a manual transaxle clutch system, and how can one diagnose clutch system failures on Volkswagen Jetta?

Accepted Answer

All models that use a manual transaxle are designed to use either a Sachs or LuK single dry plate, either diaphragm spring type of clutch, which has a splined hub clutch disc sliding on the input shaft of the transaxle. The diaphragm in the pressure plate ensures that the clutch and pressure plate are kept in contact through spring pressure. The hydraulically driven clutch release system consists of the clutch pedal, clutch master cylinder, clutch release cylinder and the hydraulic line between the master and release cylinders with the release cylinder and bearing being integrated in 6-speed transaxes. The act of pressing the clutch pedal causes the master cylinder to open the release cylinder and open the action of pivoting the release lever that action of opening the release bearing, causing the release plate of the clutch to separate. The terminology may be different depending on the component part, i.e. the clutch release cylinder can be called a slave cylinder, the driven plate can be called a clutch plate or disc, the pressure plate assembly can be called a clutch cover, and the release bearing can be referred to as a throw-out bearing. The preliminary tests used to diagnose failures of the clutch system should be performed beyond replacing visibly damaged parts, such as, making sure the spin down time of the engine is within normal limits by tasking the engine with no load in the Neutral position with the transaxle in the Neutral position, and ensuring that the engine does not grind when the engine is shifted into Neutral after disengagement of the clutch. Also, it is possible to test complete clutch release by pressing the pedal a little higher than the floor and shifting between 1 st gear and Reverse where smooth shifts are a good indication of functionality. It is also necessary to inspect the clutch pivot visually to determine whether it can stick or wear out and evaluate whether it has hydraulic line leakage at the master and release cylinders, and the system may need to be bled in case of any problems.

Question 2

What role does the Clutch Disc play in the key components and functions of a manual transaxle clutch system on Volkswagen Passat?

Accepted Answer

Each model having a manual transaxle uses one dry plate, diaphragm spring type clutch with a splined hub which enables it to slide along the splines of the input shaft of the transaxle. The spring pressure of the diaphragm of the pressure plate provides contact between the clutch and pressure plate. The clutch release system is hydraulic and it consists of the following; the clutch pedal, master-cylinder, release-cylinder, hydraulic line, release-bearing, and release- lever. When the clutch pedal is pressed, the master cylinder opens up the release cylinder that is used to move the release lever. The release bearing contacts the diaphragm spring fingers as the lever is swung to release the clutch plate. Terminology may differ, with such terms as slave cylinder used instead of the release cylinder, driven plate instead of the clutch plate or disc, clutch cover instead of the pressure plate assembly and throw-out bearing instead of the release bearing. Initial tests should be made to identify the failure of the clutch system even when it is not being replaced with evidently damaged parts. To check the time of clutch spin down, the engine should be started and then left to run at idle speed with the transaxle in Neutral and the clutch should be disengaged and shifted into reverse without the noise of grinding which can be a cause of pressure plate or clutch disc problems. To achieve full release of the clutch, the engine is to be operated with parking brake on and the clutch pedal slightly lower than the floor and alternate between 1 st gear and Reverse; it may be rough shifting indicating a possible component failure. Also, check the pivot of the clutch pedal visually to ensure it is not sticking or pitted and ensure that hydraulic lines at the master and release cylinders are leak-free, bleed into the system if needed.

Genuine Volkswagen Clutch Disc

26 Clutch Discs found

Volkswagen Disc Part Number: 026-141-031-2

Volkswagen Disc Part Number: 055-141-033-B

Volkswagen Disc Part Number: 055-141-033-X

Volkswagen Disc Part Number: 027-141-033-SX

Volkswagen Disc Part Number: 035-141-033-JX

Volkswagen Disc Part Number: 025-141-031-DX

Volkswagen Disc Part Number: 068-141-037-MX

Volkswagen Disc Part Number: 021-141-031-EX

Volkswagen Disc Part Number: 025-141-031-KX

Volkswagen Disc Part Number: 068-141-035-PX

Volkswagen Disc Part Number: 068-141-034-TX

Volkswagen Disc Part Number: 021-141-031-C

Volkswagen Disc Part Number: 044-141-031-TX

Volkswagen Disc Part Number: 078-141-031-NX

Volkswagen Disc Part Number: 023-141-031-K

Volkswagen Disc Part Number: 06A-141-031-DX

Volkswagen Disc Part Number: 078-141-032-A

Volkswagen Disc Part Number: 028-141-036-LX

Volkswagen Disc Part Number: 06A-141-031-C

Volkswagen Disc Part Number: 050-141-032-PX

Volkswagen Clutch Disc

Volkswagen Clutch Disc Parts and Q&A

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