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Nissan Frontier. Manual - part 999

ENGINE MAINTENANCE (QR25DE ENGINE)

MA-23

< PERIODIC MAINTENANCE >

• Cracks

• Damage

• Loose connections

• Chafing

• Deterioration

CHECKING RESERVOIR LEVEL

• Check if the engine coolant reservoir tank level is within MIN to

MAX when the engine is cool.

• Adjust engine coolant level as necessary.

ENGINE COOLANT : Changing Engine Coolant

INFOID:0000000009478627

WARNING:

• To avoid being scalded, do not change the coolant when the engine is hot.

• Wrap a thick cloth around the cap to carefully remove the cap. First, turn the cap a quarter of a turn

to release any built-up pressure, then push down and turn the cap all the way to remove it.

• Avoid direct skin contact with used coolant. If skin contact is made, wash thoroughly with soap or

hand cleaner as soon as possible.

• Keep coolant out of the reach of children and pets.

DRAINING ENGINE COOLANT

1. Turn ignition switch ON and set temperature control lever all the way to HOT position or the highest tem-

perature position. Wait 10 seconds and turn ignition switch OFF.

2. Remove the engine under cover. Refer to

EXT-15, "Removal and Installation"

3. Open the radiator drain plug at the bottom of the radiator, and

remove the reservoir cap. This is the only step required when

partially draining the cooling system (radiator only).

CAUTION:

• Do not allow the coolant to contact the drive belts.

• Perform this step when engine is cold.

4. Follow this step for heater core removal/replacement only. Disconnect the upper heater hose at the

engine side and apply moderate air pressure [103.46 kPa (15 psi, 1.055 kg/cm

) maximum air pressure]

into the hose for 30 seconds to blow the excess coolant out of the heater core.

5. When draining all of the coolant in the system for engine

removal or repair, it is necessary to drain the cylinder block.

Remove the cylinder block drain plug to drain the cylinder block

as shown.

CAUTION:

Do not reuse copper sealing washers.

NOTE:

For Canada, the cylinder block drain plug as shown, is not a cyl-

inder block drain plug but a block heater.

SMA412B

LBIA0063E

KBIA0163E

MA-24

< PERIODIC MAINTENANCE >

ENGINE MAINTENANCE (QR25DE ENGINE)

6. Remove the reservoir tank to drain the engine coolant, then clean the reservoir tank before installing it.
7. Check the drained coolant for contaminants such as rust, corrosion or discoloration.

If the coolant is contaminated, flush the engine cooling system. Follow the "Flushing Cooling System" pro-

cedure.

REFILLING ENGINE COOLANT

1. Close the radiator drain plug. Install the reservoir tank and cylin-

der block drain plug and block heater (if equipped).

CAUTION:

Do not reuse copper sealing washers.

• The radiator must be completely empty of coolant and water.

• Apply sealant to the threads of the cylinder block drain plugs.

• Use Genuine High Performance Thread Sealant or equiva-

lent. Refer to

and Sealants"

• Tighten each plug to the specified torque.

2. Set the vehicle heater controls to the full HOT and heater ON position. Turn the vehicle ignition ON with

the engine OFF as necessary to activate the heater mode.

3. Remove the vented reservoir cap and replace it with a non-vented reservoir cap before filling the cooling

system.

4. Install the Tool by installing the radiator cap adapter onto the

radiator neck opening. Then attach the gauge body assembly

with the refill tube and the venturi assembly to the radiator cap

adapter.

5. Insert the refill hose into the coolant mixture container that is

placed at floor level. Make sure the ball valve is in the closed

position.

CAUTION:

Do not use any cooling system additives such as radiator

sealer. Additives may clog the cooling system and cause

damage to the engine, transmission and/or cooling system.

NOTE:

Use recommended coolant or equivalent. Refer to

MA-16, "FOR

USA AND CANADA : Fluids and Lubricants"

6. Install an air hose to the venturi assembly, the air pressure must

be within specification.

CAUTION:

The compressed air supply must be equipped with an air dryer.

7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open

the ball valve on the refill hose slightly. Coolant will be visible rising in the refill hose. Once the refill hose is

full of coolant, close the ball valve. This will purge any air trapped in the refill hose.

Radiator drain plug

: Refer to

CO-16

Cylinder block drain plug

: Refer to

EM-80

Tool number

: KV991J0070 (J-45695)

Cooling system capacity
(with reservoir)

: Refer to

MA-16, "FOR

USA AND CANADA : Flu-
ids and Lubricants"

Compressed air
supply pressure

: 549 - 824 kPa (5.6 - 8.4 kg/cm

80 - 119 psi)

KBIA0163E

LLIA0058E

ENGINE MAINTENANCE (QR25DE ENGINE)

MA-25

< PERIODIC MAINTENANCE >

8. Continue to draw the vacuum until the gauge reaches 28 inches

of vacuum. The gauge may not reach 28 inches in high altitude

locations, use the vacuum specifications below based on the

altitude above sea level.

9. When the vacuum gauge has reached the specified amount, disconnect the air hose and wait 20 seconds

to see if the system loses any vacuum. If the vacuum level drops, perform any necessary repairs to the

system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for any leaks.

10. Place the coolant container (with the refill hose inserted) at the same level as the top of the radiator. Then

open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling

system is full when the vacuum gauge reads zero.

CAUTION:

Do not allow the coolant container to get too low when filling, to avoid air from being drawn into

the cooling system.

11. Remove the Tool from the radiator neck opening and install the radiator cap.
12. Remove the non-vented reservoir cap.
13. Fill the cooling system reservoir tank to the specified level. Run the engine to warm up the cooling system

and top up the system as necessary before installing the vented reservoir cap.

14. Install the engine under cover. Refer to

EXT-15, "Removal and Installation"

FLUSHING COOLING SYSTEM

1. Drain the engine coolant from the engine cooling system. Refer to

CO-12, "Changing Engine Coolant"

2. Fill the radiator and the reservoir tank (to the "MAX" line) with water. Reinstall the radiator cap and leave

the vented reservoir cap off.

3. Run the engine until it reaches normal operating temperature.
4. Press the engine accelerator two or three times under no-load.
5. Stop the engine and wait until it cools down.
6. Drain the water from the engine cooling system. Refer to

CO-12, "Changing Engine Coolant"

7. Repeat steps 2 through 6 until clear water begins to drain from the radiator.

FUEL LINES
FUEL LINES : Checking Fuel Line

INFOID:0000000009478628

Inspect the fuel lines and fuel tank for improperly attached hoses,

leaks, cracks, damage, loose connections, chafing, or deterioration.

If necessary, repair or replace any damaged parts.

AIR CLEANER FILTER
AIR CLEANER FILTER : Removal and Installation

INFOID:0000000009478629

REMOVAL

Altitude above sea level

Vacuum gauge reading

0 - 100 m (328 ft)

: 28 inches of vacuum

300 m (984 ft)

: 27 inches of vacuum

500 m (1,641 ft)

: 26 inches of vacuum

1,000 m (3,281 ft)

: 24 - 25 inches of vacuum

LLIA0057E

SMA803A

MA-26

< PERIODIC MAINTENANCE >

ENGINE MAINTENANCE (QR25DE ENGINE)

1. Unfasten clips and lift up air cleaner case (upper).
2. Remove air cleaner filter.

INSTALLATION

Installation is in the reverse order of removal.

ENGINE OIL
ENGINE OIL : Inspection

INFOID:0000000009478630

OIL LEVEL

• Before starting the engine make sure the vehicle is parked on a flat

and level surface, then check the oil level. If the engine is already

running, turn it off and allow 10 minutes before checking.

• Pull out oil level gauge and wipe clean.

• Insert oil level gauge.

• Check that the oil level is within the low (L) and high (H) range as

indicated on the dipstick.

• If the engine oil level is out of range, add oil as necessary. Refer to

MA-16, "FOR USA AND CANADA : Fluids and Lubricants"

CAUTION:

Do not overfill the engine with oil.

NOTE:

It is normal to add some oil between oil maintenance intervals or during the break-in period, depending on the

severity of the operating conditions.

ENGINE OIL : Changing Engine Oil

INFOID:0000000009478631

WARNING:

• Be careful not to burn yourself, as the engine and engine oil may be hot.

• Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct skin

contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as

possible.

1. Warm up the engine and check for any oil leaks
2. Stop the engine and wait for at least 10 minutes.
3. Remove the oil drain plug and oil filler cap to drain the old oil.
4. Install a new washer on the oil drain plug, then install the oil

drain plug in the oil pan.

CAUTION:

• Clean the drain plug and install with new washer.

• Do not reuse copper sealing washers.

5. Refill the engine with new specified engine oil.

LBIA0442E

PBIC2823E

Oil pan drain plug: : Refer to

EM-33, "Exploded

View"

PBIC3006E

Content .. 997 998 999 1000 ..