CAD $ 273.85
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Brand :
FTE
Part # :
8k1721401h
Price :
CAD $ 273.85
Shipping :
CAD $ 14.00
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Categories : Drivetrain
Black Haze Workshop
Diesel Craftmanship
Clutch Master Cylinder 8K1721401H Audi A4 S4 B8 B8.5
Replace your broken cylinder with this OE one.
Made by FTE Automotive in Germany.
Audi B8 clutch master cylinder has a tendency to break on a simple daily use.
Or the clutch switch can simply fail and prevent the engine to start.
Checking clutch master cylinder and clutch slave cylinder
Before you renew the clutch master cylinder or slave cylinder you must - in the case of the following faults - first carry out the appropriate checks.
Noises when operating the clutch:
First check the over-centre spring / clutch pedal switch for noise. If you hear a noise, remove over-centre spring and repeat check. Renew relevant component.
After releasing clutch pedal it still remains depressed / does not return to its initial position.
Check whether the clutch pedal returns all the way to its initial position, thereby uncovering the vent opening in the master cylinder.
Check that footwell trim and/or floor mats are not trapped.
Make the customer aware that the driver must NOT rest his/her foot on the clutch pedal for long periods of time.
This could impair the self-bleeding function of the clutch system as the vent opening in the clutch master cylinder can no longer function.
The vent opening must be uncovered, otherwise the permanent self-bleeding function for the hydraulic clutch system will no longer be effective.
The vent opening is integrated in the clutch master cylinder. It is not visible from the outside.
Check the complete hydraulic system for leaks.
Check brake fluid level in brake fluid reservoir.
Check clutch master cylinder and slave cylinder as well as the pipe/hose assembly including connections for external leaks (visual inspection).
If you identify any leaks you must renew the leaking component. Bleed clutch system
High pedal force:
Mechanical fault on clutch plate or pressure plate
Single-plate SAC clutch:
- approx. 140 N for complete service life of the clutch.
Twin-plate SAC clutch:
approx. 125 N for complete service life of the clutch.
Clutch does not disengage or does not disengage fully:
Air in hydraulic system: bleed clutch system
Clutch plate does not move smoothly on input shaft splines. Needle bearing in drive plate defective (centring bearing for input shaft); renew needle bearing
Foreign body in clutch system. Mechanical fault on clutch plate or pressure plate → Servicing manual gearbox
Wrong components used or components forgotten when carrying out repair work (e.g. intermediate plate or dowel sleeves between engine and gearbox).