Engine: Service Precautions

PRECAUTIONS

Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. The Supplemental Restraint System consists of driver air bag module (located in the center of the steering wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt pre-tensioners, a diagnosis sensor unit, crash zone sensor, seat belt buckle switches, warning lamp, wiring harness and spiral cable.

WARNING:
- To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance should be performed by an authorized NISSAN dealer.
- Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, refer to Restraint Systems; Air Bag Systems.
- Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so. SRS wiring harnesses can be identified by yellow harness connectors.

Parts Requiring Angular Tightening
- Use an angle wrench for the final tightening of the following engine parts:
a. Cylinder head bolts
b. Connecting rod cap nuts
- Do not use a torque value for final tightening.
- The torque value for these parts are for a preliminary step.
- Ensure thread and seat surfaces are clean and coated with engine oil.

Liquid Gasket Application Procedure
1. Use a scraper to remove all traces of old liquid gasket from mating surfaces and grooves. Also completely clean any oil stains from these portions.





2. Apply a continuous bead of liquid gasket to mating surfaces. (Use Genuine Silicone RTV or equivalent.
- Be sure liquid gasket is 3.5 to 4.5 mm (0.138 to 0.177 inch) dia. (for oil pan).
- Be sure liquid gasket is 2.0 to 3.0 mm (0.079 to 0.118 inch) dia. (in areas except oil pan).





3. Apply liquid gasket to inner surface around hole perimeter area (unless otherwise specified).
4. Assembly should be done within 5 minutes after coating.
5. Wait at least 30 minutes before refilling engine oil and engine coolant.