Engine Cooling System: Other Nissan Maxima A34

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 (SRS) and SEAT BELTS .

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1. After removing the bolts and nuts, separate the mating surface using the Tool and remove the sealant. Tool number: KV10111100 (J-37228) CAUTION: Be careful not to damage the mating surfaces.
2. In areas where the Tool is difficult to use, use a plastic hammer to lightly tap (1) the Tool where the sealant is applied. Use a plastic hammer to slide the Tool (2) by tapping on the side.

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1. Using a scraper, remove the old sealant adhering to the mating surfaces. Remove the sealant completely from the groove of the mating surfaces, mounting bolts, and bolt holes.
2. Thoroughly clean the mating surfaces and remove all adhering moisture, grease and foreign material.
3. Attach the sealant tube to the tube presser. Use Genuine RTV Silicone Sealant or equivalent. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-233642-S07555866002006052600000) .
4. Apply the sealant without breaks to the specified location with the specified dimensions. Tool number: WS39930000 (-) If there is a groove for the sealant application, apply the sealant to the groove. As for the bolt holes, normally apply the sealant inside the holes. If specified in the procedure, it should also be applied outside the holes. Within five minutes of sealant application, install the mating component. If the sealant protrudes, wipe it off immediately. Do not retighten after the installation. After 30 minutes or more have passed from the installation, fill the engine with the specified oil and coolant. Refer to «RECOMMENDED CHEMICAL PRODUCTS AND SEALANTS»(ref-233642-S07555866002006052600000) . CAUTION: If there are specific instructions in this manual, observe them.

Special Service Tools

The actual shapes of Kent-Moore tools may from those of special service tools illustrated here.

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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

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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.

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.

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.

THERMOSTAT

THERMOSTAT SPECIFICATION

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