Place drain pan under the master cylinder.
Using a suitable wrench, disconnect brake lines from the master cylinder. Plug all lines and fittings.
Remove master cylinder-to-brake booster attaching nuts.
Pull master cylinder outward and away from brake booster.
Reverse procedure to install noting the following: Prior to installing a new or rebuilt master cylinder, it should be bench bled, refer to Brakes and Traction Control/Brakes/Service and Repair.
Torque master cylinder-to-brake booster attaching nuts to 170-230 lb-in
Torque brake line fittings to 170 lb-in