Model Without Vehicle Dynamic Control (VDC) System

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

Tighten the flange of master cylinder into a vise. Remove brake fluid from reservoir. Bend claws of stopper cap outward and remove stopper cap. Discard stopper cap. With a.16 in. (4 mm) pin punch, drive out spring pin from cylinder body and remove reservoir. See Fig 1. Remove valve stopper while lightly pushing primary piston into cylinder. Remove piston assemblies.
NOTE: If secondary piston assembly is difficult to remove, tap the flange of master cylinder with a soft block of wood.
Inspect the inner wall of the cylinder for corrosion, wear, and damage. If failure is detected, replace the cylinder body.
To reassemble, reverse disassembly procedure. DO NOT reuse primary and secondary piston assemblies. DO NOT reuse stopper cap. Replace parts as necessary. Apply clean DOT 3 brake fluid to the cylinder bore and contact surfaces of piston assemblies.

Fig 1: Exploded View Of Brake Master Cylinder Components (Without VDC Model)

Courtesy of NISSAN MOTOR CO., U.S.A.