### Clutch Master Cylinder

#### REMOVAL AND INSTALLATION

##### Altima, Maxima and 240SX

1. Disconnect the clutch pedal arm from the pushrod.
2. Disconnect the clutch hydraulic line from the master cylinder.

   WARNING
   Take precautions to keep brake fluid from coming in contact with any painted surfaces.

3. Remove the nuts attaching the master cylinder and remove the master cylinder and pushrod toward the engine compartment side.
4. If equipped, remove the dust boot from the pushrod. The boot will not fit through the cowl without tearing.

   To install:

5. Install the master cylinder assembly into the fire wall.
6. Install the attaching nuts and torque to 70–95 in. lbs. (8–11 Nm).
7. Connect the hydraulic line.
8. Connect clutch pedal.
9. Bleed system and check for leaks.
10. Adjust the clutch pedal free-play as follows:
    1. Loosen the locknut to the clutch master cylinder pushrod.
    2. Move the clutch pedal in a downward location and measure only the free-play.
    3. The free-play should be 0.04–0.12 inches (1–3mm).
    4. Rotate the clutch master rod to obtain the proper free-play.
    5. Tighten the locknut to 69–104 inch lbs. (8–12 Nm) and recheck the free-play.

##### 300ZX

Fig. 1: Measuring the output rod length — 300ZX (VG30DETT) engine

The non-turbocharged model uses a conventional release mechanism. The turbocharged engine model uses a clutch booster assembly similar a vacuum operated power brake booster.

WARNING
The clutch hydraulic system uses brake fluid which is extremely harmful to painted surfaces.

1. Disconnect the negative battery cable.
2. On VG30DE engines, disconnect the clutch pedal arm from the pushrod.
3. Disconnect the clutch hydraulic line from the master cylinder. Plug the end of line to prevent leakage.
4. Remove the nuts attaching the master cylinder to the firewall (VG30DE engines) or to the clutch booster (VG30DETT engines), then remove the master cylinder.

   To install:

5. On the VG30DETT model, measure the length of the output rod from the face of the booster to the end of the output rod. The length of the rod should be 0.5256–0.5354 inches (13.35–13.60mm).
6. Install the master cylinder and tighten mounting nuts to 6–8 ft. lbs. (8–11 Nm).
7. For VG30DE engines, connect the pedal arm to the pushrod, then secure it with a snap-pin.
8. Connect the fluid line and bleed the clutch hydraulic system.