Breaking In SAC Clutch

Breaking In SAC Clutch
Break in SAC clutches moderately to ensure correct operation.

Caution: 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 (e.g. when driving onto a transporter)

Comply with the following procedure when breaking in the new clutch:
- 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.

Breaking-in program: Special for M5 and Z8
^ At approximately 30 km on roads
^ Shift through gears often Starting speed max. 2000 rpm
^ Upshifts 1->2->3->4->5
^ Downshifts at 2000 rpm 5->4->3->2->1
^ Upshifts and downshifts at 3500-4000 rpm
^ 3 to 5 times starting on gentle gradient (up to approximately 12 %) Starting speed max. 2500 rpm

Note: Experience shows that approximately 800 to 1000 gearshifts are required for an optimally broken-in lining when a car is driven "normally" (advise customer).