300SL (129.061) L6-3.0L (104.981) (1991)
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Brake Fluid Pump: Description and Operation
Charging Pump
The ASR charging pump (M15) is at the brake booster under the tandem master cylinder. The pump is a gear-type. The ASR charging pump can produce
a maximum pressure of 8 - 12 bar (116 - 174 psi). Line BA connects it with the ABS/ASR hydraulic unit, and the ABS/ASR control unit operates it
directly.
