Removal and Installation: Removal

WARNING:

Put a "CAUTION: FLAMMABLE" sign in the workshop.
Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.
Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.

Release the fuel pressure. Refer to "FUEL PRESSURE CHECK " (for California) or "FUEL PRESSURE CHECK " (except for California).
Disconnect battery negative terminal. Refer to "REMOVAL AND INSTALLATION (MR20DE BATTERY) ".
Remove front RH wheel. Refer to "ADJUSTMENT ".
Remove splash shield (RH). Refer to FENDER PROTECTOR .
Partially drain engine coolant. Refer to ENGINE COOLANT .
NOTE: Perform this step when engine is cold.
Remove the following parts.
- Intake manifold; Refer to INTAKE MANIFOLD .
- Rocker cover; Refer to IGNITION COIL, SPARK PLUG AND ROCKER COVER .
- Front cover, timing chain and related parts; Refer to TIMING CHAIN .
- Generator; Refer to "REMOVAL AND INSTALLATION MR20DE ".
Remove camshaft position sensor (PHASE) from camshaft bracket.
CAUTION:
- Handle carefully to avoid dropping and shocks.
- Never disassemble.
- Never allow metal powder to adhere to magnetic part at sensor tip.
- Never place sensor in a location where it is exposed to magnetism.
Put the matching mark (A) on the camshaft sprocket (INT) (2) and the camshaft bracket (1) as shown in the figure.

Fig 1: Location Of Matching Mark On Camshaft Sprocket And Camshaft Bracket
Courtesy of NISSAN MOTOR CO., U.S.A.

NOTE: It prevents the knock pin of the camshaft (INT) from engaging with the incorrect pin hole when installing the camshaft sprocket (INT).
Remove camshaft sprockets (INT) (1) and (EXH) (2).
- Secure hexagonal part (A) of camshaft with a wrench. Loosen camshaft sprocket bolts and remove camshaft sprocket.
  CAUTION:
  - Never rotate crankshaft or camshaft while timing chain is removed. It causes interference between valve and piston.
  - Never loosen the bolts with securing anything other than the camshaft hexagonal part or with tensioning the timing chain.
    
    Fig 2: Removing Camshaft Sprockets
    Courtesy of NISSAN MOTOR CO., U.S.A.
Loosen bolts in reverse order as shown in the figure.

Fig 3: Camshaft Bolts (Reverse For Loosening)
Courtesy of NISSAN MOTOR CO., U.S.A.
Cut liquid gasket by prying the position shown in the figure, and then remove the camshaft bracket.

Fig 4: Locating Camshaft Bracket
Courtesy of NISSAN MOTOR CO., U.S.A.
CAUTION:
- Be careful not to damage the mating surface.
- A more adhesive liquid gasket is applied compared to previous types when shipped, so it should not be forced off the position not specified.
Remove valve lifters, if necessary.
NOTE: Identify installed positions, and store them without mixing them up.