Nissan Quest E52. Manual - part 285

CO-10

< PERIODIC MAINTENANCE >

ENGINE COOLANT

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”.
• 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. 

Flushing

INFOID:0000000009650541

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.

A

: MAX 

B

:  MIN

JPBIA0102ZZ

Tightening torque

: Refer to 

CO-13, "Exploded View"

.

ENGINE COOLANT

CO-11

< PERIODIC MAINTENANCE >

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

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.

CO-12

< PERIODIC MAINTENANCE >

RADIATOR

RADIATOR

RADIATOR CAP

RADIATOR CAP : Inspection

INFOID:0000000009650542

• 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.

• Check radiator cap relief pressure.

- When connecting radiator cap to the radiator cap tester (commer-

cial service tool) and the radiator cap tester adapter (commercial
service tool) (A), apply engine coolant to the cap seal surface. 

• Replace radiator cap if there is an unusualness related to the above three.

CAUTION:

When installing radiator cap, thoroughly wipe out the radiator pipe (upper) filler neck to remove any
waxy residue or foreign material.

RADIATOR

RADIATOR : Inspection

INFOID:0000000009650543

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

CAUTION:

• Be careful not to bend or damage radiator fins.
• When radiator is cleaned without removal, remove all surrounding parts such as radiator cooling fan

assembly and horns. Then tape harness and connectors to prevent water from entering.

1.

Apply water by hose to the back side of the radiator core 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 radiator.

4.

Blow air into the back side of radiator core vertically downward.
• Use compressed air lower than 490 kPa (5 kg/cm

2

, 71 psi) and keep distance more than 30 cm (11.81

in). 

5.

Blow air again into all the radiator core surfaces once per minute until no water sprays out.

JPBIA1961ZZ

Standard and limit

: Refer to 

CO-28, "Radiator"

.

JPBIA0109ZZ

RADIATOR

CO-13

< REMOVAL AND INSTALLATION >

C

D

E

F

G

H

I

J

K

L

M

A

CO

N

P

O

REMOVAL AND INSTALLATION

RADIATOR

Exploded View

INFOID:0000000009650544

Removal and Installation

INFOID:0000000009650545

REMOVAL

WARNING:

Never remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator. Wrap a thick cloth around the cap. Slowly turn it a quarter of a turn to
release built-up pressure. Carefully remove radiator cap by turning it all the way.
NOTE:

1.

Radiator upper clip

2.

Mounting rubber (upper)

3.

Radiator

4.

Mounting rubber (lower)

5.

Clamp

6.

Radiator hose (lower)

7.

Cooling fan assembly

8.

Grommet

9.

Radiator hose (lower)

10. Radiator pipe (lower)

11.

Radiator hose (upper)

12. Radiator pipe (upper)

13. Clamp

14. Reservoir tank

15. Reservoir tank cap

16. Reservoir tank hose

17. Radiator cap adapter

18. Radiator cap

19. Radiator hose (upper)

20. O-ring

21. Drain plug

22. Water drain hose

23. Radiator core support

A

To transaxle assembly

B

To water inlet

C

To water outlet

 : Always replace after every disassembly.

 : N·m (kg-m, in-lb)

JPBIA4641GB