Engine Cooling System - VQ35DE: Other Nissan Altima L31 рестайлинг

Precautions for 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 front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in SUPPLEMENTAL RESTRAINT SYSTEM .

System Check

CHECKING COOLING SYSTEM HOSES

Check hoses for the following

1. Improper attachment
2. Leaks
3. Cracks
4. Damage
5. Loose connections
6. Chafing
7. Deterioration

CHECKING RESERVOIR LEVEL

1. Check if the reservoir tank coolant level is within MIN to MAX when the engine is cool.
2. Adjust coolant level if it is too much or too little.

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CHECKING COOLING SYSTEM FOR LEAKS

To check for leakage, apply pressure to the cooling system using Tool.

Tool number : EG17650301 (J-33984-A)

Testing pressure : 157 kPa (1.6 kg/cm 2 , 23 psi)

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1. Inspect the radiator cap. Replace the cap if the metal plunger cannot be seen around the edge of the black rubber gasket. Replace the cap if deposits of waxy residue or other foreign material are on the black rubber gasket or the metal retainer. NOTE: Thoroughly wipe out the radiator filler neck to remove any waxy residue or foreign material.
2. Pull the negative-pressure valve to open it and check that it closes completely when released. Check that there is no dirt or damage on the valve seat of the radiator cap negative-pressure valve. Check that there are no abnormalities in the opening and closing conditions of the negative-pressure valve.
3. Check radiator cap relief pressure using Tool. Tool number : EG17650301 (J-33984-A) Standard: 78 - 98 kPa (0.8 - 1.0 kg/cm 2 , 11 - 14 psi) Limit: 59 kPa (0.6 kg/cm 2 , 9 psi) When connecting the radiator cap to the tester, apply water or coolant to the cap seal surface. Replace the radiator cap if there is an abnormality in the negative-pressure valve, or if the open-valve pressure is outside of the standard values.

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CHECKING RADIATOR

Check radiator for mud or clogging. If necessary, clean radiator as follows.

1. Be careful not to bend or damage the radiator fins.
2. When radiator is cleaned without removal, remove all surrounding parts such as cooling fan shroud and horns. Then tape the harness and electrical connectors to prevent water from entering.

1. Apply water by hose to the back side of the radiator core, with the hose pointed vertically downward.
2. Apply water again to all radiator core surfaces once per minute.
3. Stop washing if any stains no longer flow out from the radiator.
4. Blow air into the back side of radiator core, with the air hose pointed vertically downward. Use compressed air lower than 490 kPa (5 kg/cm 2 , 71 psi) and keep distance more than 30 cm (11.8 in).
5. Blow air again into all the radiator core surfaces once per minute until no water sprays out.
6. Check for leaks.

PREPARATION

1. Attach the spacer to the tip of the radiator plate pliers A. Spacer specification: 1.5 mm (0.059 in) thick x 18 mm (0.71 in) wide x 8.5 mm (0.335 in) long.
2. Make sure that when radiator plate pliers A are closed dimension H" is approx. 7.6 mm (0.299 in).
3. Adjust dimension H" with the spacer, if necessary.

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1. Remove the tank with Tool. Grip the crimped edge and bend it upwards so that Tool slips off. CAUTION: Do not bend excessively. In areas where Tool cannot be used, use a screwdriver to bend the edge up. CAUTION: Be careful not to damage tank.
2. Make sure the edge stands straight up.
3. Remove oil cooler from tank (A/T model only).

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1. Install the oil cooler (A/T model only). NOTE: Pay attention to direction of conical washer.
2. Clean the contact portion of the tank.
3. Install sealing rubber by pushing it in with your fingers. CAUTION: Be careful not to twist sealing rubber gasket.
4. Crimp tank in specified sequence with Tool. Use pliers in the locations where Tool cannot be used.
5. Make sure that the rim is completely crimped down. Standard height "H" : 8.0 - 8.4 mm (0.315 - 0.331 in)
6. Confirm that there is no leakage. Refer to " «INSPECTION»(ref-244158-S42899647682006091800000) ".

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1. Apply pressure with Tool. Specified pressure : 157 kPa (1.6 kg/cm 2 , 23 psi) value WARNING: To prevent the risk of the hose coming undone while under pressure, securely fasten it down with a hose clamp. Attach a hose to the oil cooler as well (A/T model only).
2. Check for leakage.

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Thermostat

THERMOSTAT SPECIFICATION

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