Breaking In Self-Adjusting Clutch (Sac)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2005 BMW 545i, 2005 BMW 530i, 2005 BMW 525i, 2004 BMW 545i, and 2004 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.
Break in SAC clutches moderately to ensure correct operation, as fast sports driving maneuvers destroy new clutches. Such maneuvers include:
- Driving maneuvers with high speed differentials.
- Overlapping gearshifts with high speed differentials (slipping clutch).
- Very high starting speeds (such as when driving onto a transporter).
- Break in friction linings with light to medium loads (observe breaking-in program).
- Normal driving with many "moderate" gearshifts.
- Starting speeds on the level up to approximately 2000 RPM.
- Specific breaking-in program on gentle gradients.
- Starting speeds on a medium gradient up to approximately 2500 RPM (e.g. when driving onto a transporter).
This procedure helps to create a carbon layer between lining and metal friction surface which generates the required coefficient of friction. See SELF-ADJUSTING CLUTCH BREAKING IN PROGRAM table. Experience shows that approximately 800-1000 gearshifts are required for an optimally broken-in lining when a car is driven normally.
SELF-ADJUSTING CLUTCH BREAKING IN PROGRAM
| Application | Specification |
|---|---|
| Shift Through Gears Often | Starting Speed Maximum 200 RPM |
| Upshifts | 1-2-3-4-5 |
| Downshifts At 2000 RPM | 5-4-3-2-1 |
| Upshifts & Downshifts | At 3000- |
| 3-5 Times Starting On Gentle Gradient (Up To Approximately 12%) | Starting Speed Maximum 2500 RPM |