Nissan Quest E52. Manual - part 879

MA-12

< PERIODIC MAINTENANCE >

ENGINE MAINTENANCE

ENGINE MAINTENANCE

DRIVE BELT

DRIVE BELT : Exploded View

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DRIVE BELT : Checking

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WARNING:

Be sure to perform the this step when engine is stopped.
• Check that the indicator (A) of drive belt auto-tensioner is within the possible use range (B).

NOTE:
• Check the drive belt auto-tensioner indication when the engine is cold.
• When new drive belt is installed, the indicator should be within the range (C) in the figure.

• Visually check entire drive belt for wear, damage or cracks.
• If the indicator is out of the possible use range or belt is damaged, replace drive belt.

DRIVE BELT : Tension Adjustment

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Refer to 

EM-128, "Drive Belt"

.

ENGINE COOLANT

ENGINE COOLANT : Draining

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WARNING:

• To avoid being scalded, never change engine coolant when the engine is hot.
• Wrap a thick cloth around radiator cap and carefully remove radiator cap. First, turn radiator cap a

quarter of a turn to release built-up pressure. Then turn radiator cap all the way.

1.

Remove engine under cover.

1.

Drive belt

2.

Alternator

3.

Drive belt auto-tensioner

4.

Crankshaft pulley

5.

A/C compressor

A.

Indicator

B.

Possible use range

C.

Range when new drive belt is installed

D.

View D

: Engine front

ENGINE MAINTENANCE

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2.

Open radiator drain plug (1) at the bottom of radiator, and then
remove radiator cap. 

When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer
to 

EM-63, "Setting"

.

3.

Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing. 

4.

Check drained engine coolant for contaminants such as rust, corrosion or discoloration.
If contaminated, flush the engine cooling system. Refer to 

CO-10, "Flushing"

.

ENGINE COOLANT : Refilling

INFOID:0000000009651622

CAUTION:

• Do not reuse O-rings.
• Do not put additive such as waterleak preventive, since it may cause cooling waterway clogging.
• When refilling use Genuine NISSAN Long Life Antifreeze/Coolant (blue) or equivalent in its quality

mixed with water (distilled or demineralized). Refer to 

MA-10, "Fluids and Lubricants"

.

1.

Install reservoir tank if removed and radiator drain plug.

CAUTION:

Be sure to clean drain plug and install with new O-ring.

If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-105, "Dis-

assembly and Assembly"

.

2.

Check that each hose clamp has been firmly tightened.

3.

Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to 

EM-26, "Exploded

View"

.

4.

Remove air bleeder plug (1) of heater pipe.

5.

Fill radiator, and reservoir tank if removed, to specified level.

CAUTION:

: Vehicle front

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Tightening torque

: Refer to 

CO-13, "Exploded View"

.

: Vehicle front

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ENGINE MAINTENANCE

Never adhere the engine coolant to electronic equipments.
(alternator etc.)
• Pour engine coolant through engine coolant filler neck

slowly of less than 2  (2-1/8 US qt, 1-3/4 lmp qt) a minute
to allow air in system to escape.

• When coolant comes out from the air bleeder plug of

heater pipe, tighten the bleeder plug.

6.

Install air duct assembly and air cleaner cases (upper and lower) assembly. Refer to 

EM-26, "Exploded

View"

.

7.

Install radiator cap.

8.

Start the engine.

9.

Maintain the engine at 1,800 rpm for approximately 10 seconds. After performing this, stop the engine.

10. Remove radiator cap with the engine cold (approx. 50

°

C or less), and check the cooling water level. If the

fluid level is low, refill with cooling water to the lip of radiator. 

11. Repeat Steps from 7 to 9 four times.
12. Cap the radiator, and start the engine.

13. Warm up engine until opening thermostat. Standard for warming-up time is approximately 10 minutes at

3,000 rpm.
• Check thermostat opening condition by touching radiator hose (lower) to see a flow of warm water.

CAUTION:

Watch water temperature gauge so as not to overheat engine.

14. Stop the engine and cool down to less than approximately 50

°

C (122

°

F).

• Cool down using fan to reduce the time.
• If necessary, refill radiator up to filler neck with engine coolant.

CAUTION:

Never adhere the engine coolant to electronic equipments. (alternator etc.)

15. Refill reservoir tank to “MAX” level line with engine coolant.

16. Repeat steps 7 through 10 two or more times with radiator cap installed until engine coolant level no

longer drops. 

17. Check cooling system for leakage with engine running.

18. Warm up the engine, and check for sound of engine coolant flow while running engine from idle up to

3,000 rpm with heater temperature controller set at several position between “COOL” and “WARM”.

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Engine coolant capacity

: Refer to 

CO-28, "Periodical Maintenance Spec-

ification"

.

(With reservoir tank at “MAX” level)

Reservoir tank engine coolant capacity

: Refer to 

CO-28, "Periodical Maintenance 

Specification"

.

(At “MAX” level)

A

: MAX 

B

:  MIN

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• Sound may be noticeable at heater unit.

19. Repeat step 13 three times.
20. If sound is heard, bleed air from cooling system by repeating step 5, and steps from 7 to 14 until engine

coolant level no longer drops. 

ENGINE COOLANT : Flushing

INFOID:0000000009651623

1.

Install reservoir tank if removed and radiator drain plug.

CAUTION:

Be sure to clean drain plug and install with new O-ring.

If water drain plugs on cylinder block are removed, close and tighten them. Refer to 

EM-105, "Dis-

assembly and Assembly"

.

2.

Remove air duct assembly and air cleaner cases (upper and lower) assembly. Refer to 

EM-26, "Exploded

View"

.

3.

Remove air bleeder plug.

4.

Fill with cooling water until it overflows from the bleeder plug.

5.

Install air bleeder plug.

6.

 Fill radiator and reservoir tank with water and reinstall radiator cap.

CAUTION:

Never adhere the water to electronic equipments. (alternator etc.)
• When water overflows disconnected heater hose, connect heater hose, and continue filling the

water.

7.

Install air duct assembly and air cleaner cases (upper and lower) assembly. Refer to 

EM-26, "Exploded

View"

.

8.

Run the engine and warm it up to normal operating temperature.

9.

Rev the engine two or three times under no-load.

10. Stop the engine and wait until it cools down.
11. Drain water from the system. Refer to 

CO-8, "Draining"

.

12. Repeat steps 1 through 11 until clear water begins to drain from radiator.

RADIATOR CAP

RADIATOR CAP : Inspection

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• Check valve seat (A) of radiator cap. 
- Check if valve seat is swollen to the extent that the edge of the

plunger (B) cannot be seen when watching it vertically from the
top.

- Check if valve seat has no soil and damage.
- Check that there is no dirt or damage on the valve seat of radiator

cap negative-pressure valve. 

- Check that there are no unusualness in the opening and closing

conditions of negative-pressure valve.

Tightening torque

: Refer to 

CO-13, "Exploded View"

.

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