Indicator
Concentric Slave Cylinder (CSC) leaking/no pedal

Cause
1. The CSC has been exposed to fluid contamination with either engine or transmission oil compromising the seal.
2. Incorrect fluid used in the hydraulic system

Effect
The internal rubber seal swells due to the contamination and in some cases splits

Action
1. Identify why the CSC has oil contamination and repair the leak (engine: rear mail seal, rocket cover gaskets – transmission: front shaft seal)
2. Thoroughly clean the back of the engine and transmission bellhousing to remove any oil residue
3. Replace the CSC
4. Flush the clutch hydraulic fluid system using the manufacturers recommended fluid.

» Link to Guide

Indicator:

Concentric Slave Cylinder (CSC) leaking/No pedal

Cause:

1. Incorrect mounting procedure (over torqued bolts or bolts missing)
2. CSC Misalignment (CSC off centre axis)

3. Spigot bearing/Bush damaged or missing

Effect:

Cracked CSC bearing guide/base

Action:
1. Replace CSC
2. Ensure mounting surface is clean and free of any debris
3. Replace any worn or missing bolts
4. Torque the mounting bolts to the manufacturers specifications
5. Replace spigot bearing/bush if necessary

» Link to Guide

Indicator:

Concentric Slave Cylinder (CSC) leaking

Cause:

1. Incorrect handling procedure
2. Incorrect fitment to the transmission

Effect:

The CSC rear seal has become dislodged

Action:

1. Locate the CSC correctly
2. Ensure all mounting surfaces are clean and free of debris
3. Torque the bolts to manufacturers specifications

» Link to Guide

Indicator:

Concentric Slave Cylinder (CSC) leaking

Cause:

The CSC has exceeded maximum stroke

Effect:

1. Master cylinder failure
2. Incorrect clutch free travel
3. Incorrect bleeding practices

Action:

1. Replace CSC
2. Inspect Clutch Master Cylinder – replace if necessary
3. Adjust clutch free travel to manufacturers specifications
4. Follow the ClutchTech bleeding procedure (In some cases the CSC will need to be bleed with a reverse type vacuum bleeder)

» Link to Guide

Indicator:

Concentric Slave Cylinder (CSC) leaking/No pedal

Cause:

1. Incorrect mounting procedure (over torqued bolts or bolts missing)
2. Poor bleeding procedure
3. Pipe/Feed line obstructions leading into the CSC

Effect:

Cracked CSC body

Action:

1. Replace CSC
2. Replace any worn or missing bolts
3. Torque the mounting bolts to the manufacturers specifications
4. Ensure the inlet line is free from obstructions.
5. Always follow ClutchTech bleed procedure (in some cases a reverse vacuum bleed may be required)

» Link to Guide