The clutch will only work perfectly over the long term if the hub spline is optimally greased.

If the clutch disk is not greased correctly when it is installed, tribocorrosion may occur in the hub spline. In this case, the clutch disk will seize instead of sliding along the transmission input shaft. ZF Aftermarket emphasizes that the hub spline must always be greased correctly.

Lightly grease all around the hub spline of the clutch disk and the transmission input shaft with SACHS high-performance grease. Now the clutch disk is moved back and forth along the transmission input shaft, and then the excess grease is removed from the transmission input shaft and from the hub spline.

Not every lubricant is suitable. It has to be temperature-resistant and withstand high surface pressure. Unsuitable lubricants can become liquid, solidify, become resinous or burn, causing malfunctions. Every SACHS clutch kit is supplied with a lubricant pad which is sufficient to lubricate the hub splines once. This high-performance grease optimally meets requirements.

Both products shown can be found in the online catalog WebCat. Enter the corresponding part numbers in the search box at the bottom edge of the browser. These are:

• 4200 080 050 for the tube with 80 g content for multiple uses
• 42000 80 060 for the lubricant pad with 1 g content for one-time use