Without VDC Models: Disassembly

WARNING: This page is about a different car, the 2005 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

Using a screwdriver or suitable tool as shown, lift up the tabs on the stopper cap and remove it from the master cylinder. The piston inside the master cylinder might pop out when this is done, so hold the stopper cap down at the same time.

Fig 1: Lifting Up Tabs On Stopper Cap
Courtesy of NISSAN MOTOR CO., U.S.A.
Place the side flange of cylinder body with chamfering around the pin insertion hole facing up, and firmly set master cylinder assembly in a vise.
CAUTION:
- When setting the master cylinder assembly with the vise, be sure not to over-tighten.
- When securing with a vise, use copper plates or cloth to protect the flange.
  
  Fig 2: Placing Master Cylinder Assembly In Vise
  Courtesy of NISSAN MOTOR CO., U.S.A.
Using a pin punch [commercial service tool: diameter approx. 4 mm (0.16 in)], remove mounting pins on the reservoir tank.

Fig 3: Removing Mounting Pins On Reservoir Tank
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove master cylinder assembly from the vise.
Remove brake fluid level switch, if necessary.
Remove reservoir tank and grommet from cylinder body.
Using a Phillips screwdriver or suitable tool, push in the piston and remove the piston stopper from the cylinder body.

Fig 4: Removing Piston Stopper From Cylinder Body
Courtesy of NISSAN MOTOR CO., U.S.A.
Carefully pull the primary piston assembly straight out to prevent cylinder inner wall from being damaged.
Tap flange using a soft block such as wood, and carefully pull the secondary piston assembly straight out to prevent cylinder inner wall from being damaged.

Fig 5: Removing Secondary Piston Assembly From Master Cylinder
Courtesy of NISSAN MOTOR CO., U.S.A.