Breaking In Self-Adjusting Clutch (Sac)
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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 |