Mercury 8L8Z-2140-C Kit - Master Cylinder Repair

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If a new master cylinder is being installed, the reservoir is removed from the old master cylinder and transferred to the new one. New seals should be installed during the transfer.

The master cylinder is removed by first extracting as much fluid as possible from the reservoir using a syringe. Then, rags are placed underneath and caps or bags are prepped to cover the brake lines once disconnected. The fittings at the ends of the brake lines are loosened, and the brake lines are pulled slightly away from the master cylinder and plugged to avoid contamination. The electrical connector at the brake fluid level switch is disconnected, and the nuts attaching the master cylinder to the power booster are removed. Finally, the master cylinder is carefully pulled off the studs and out of the engine compartment.