Mercury 8L8Z-2005-A Brake Booster Assembly

After installing the brake booster, test the brake operation carefully before normal vehicle use.

To remove the brake booster, follow these steps. In the engine compartment, remove the nuts attaching the master cylinder to the booster and carefully pull the master cylinder forward to clear the mounting studs, being cautious not to damage the brake lines. Disconnect the vacuum hose from the power brake booster. In the passenger compartment, detach the pushrod from the top of the brake pedal, ensuring to discard and replace the clevis locking pin on 2008 and later models. Remove the nuts attaching the booster to the firewall. Lift the booster unit away from the firewall and out of the engine compartment.