Engine Cooling System: Maintenance Nissan Juke I

Draining

Scheme 14

Scheme 15

1. Connect drain hose. Use a genera-purpose hose with the dimensions show in the figure.
2. Open radiator drain plug (A) at the bottom of radiator, and then remove radiator cap. CAUTION: Perform this step when engine is cold. When draining all of engine coolant in the system, open water drain plugs on cylinder block. Refer to " «ENGINE STAND SETTING»(ref-516394-S14245859162012120600000) ".
3. Remove reservoir tank if necessary, and drain engine coolant and clean reservoir tank before installing. Refer to " «EXPLODED VIEW»(ref-516398-S09436481382012120600000) ".
4. Check drained engine coolant for contaminants such as rust, corrosion or discoloration. If contaminated, flush the engine cooling system. Refer to " «FLUSHING»(ref-516398-S24594727602012120600000) ".
5. Disconnect drain hose.

Refilling

Scheme 16

Scheme 17

Scheme 18

1. Install reservoir tank if removed, and install radiator drain plug. CAUTION: Be sure to clean drain plug and install with new O-ring. Radiator drain plug: Refer to " «EXPLODED VIEW»(ref-516398-S09436481382012120600000) ". If water drain plugs on cylinder block are removed, close and tighten them. Refer to " «ENGINE STAND SETTING»(ref-516394-S14245859162012120600000) ".
2. Check that each hose clamp has been firmly tightened.
3. Remove air duct (suction side). Refer to " «EXPLODED VIEW»(ref-516394-S31888619102012120600000) ".
4. Disconnect vacuum hose break booster side, and removal vacuum tube from clamp. Refer to " «EXPLODED VIEW»(ref-516399-S07000164792012120600000) ".
5. Disconnect heater hose (1) at position (<==) in the figure. Enhance heater hose as high as possible.
6. Fill radiator (1) to specified level. CAUTION: Never adhere the engine coolant to electronic equipments (alternator etc.). Pour coolant slowly of less than 2 l (2-1/8 US qt, 1-3/4 Imp qt) a minute to allow air in system to escape. When engine coolant overflows disconnected heater hose, connect heater hose, and continue filling the engine coolant. Engine coolant capacity (With reservoir tank at "MAX" level) Refer to " «PERIODICAL MAINTENANCE SPECIFICATION»(ref-516398-S00676210682012120600000) ".
7. Refill reservoir tank to "MAX" level line with engine coolant. Reservoir tank engine coolant capacity (At "MAX" level) Refer to " «PERIODICAL MAINTENANCE SPECIFICATION»(ref-516398-S00676210682012120600000) ".
8. Install air duct (suction side). Refer to " «EXPLODED VIEW»(ref-516394-S31888619102012120600000) ".
9. Install radiator cap.
10. 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.
11. 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.).
12. Refill reservoir tank to "MAX" level line with engine coolant.
13. Repeat steps 6 through 11 two or more times with radiator cap installed until engine coolant level no longer drops.
14. Check cooling system for leakage with engine running.
15. 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.
16. Repeat step 15 three times.
17. If sound is heard, bleed air from cooling system by repeating step 6 through 11 until reservoir tank level no longer drops.

Scheme 19

1. Install radiator drain plug. CAUTION: Be sure to clean drain plug and install with new O-ring. Radiator drain plug: Refer to " «EXPLODED VIEW»(ref-516398-S09436481382012120600000) ". If water drain plugs on cylinder block are removed, close and tighten them. Refer to " «ENGINE STAND SETTING»(ref-516394-S14245859162012120600000) ".
2. Remove air duct (suction side), air cleaner cover assembly and air cleaner body assembly. Refer to " «EXPLODED VIEW»(ref-516394-S31888619102012120600000) ".
3. Disconnect vacuum hose break booster side, and remove vacuum tube from clamp. Refer to.
4. Disconnect heater hose (1) at position (<==) in the figure. Enhance heater as high as possible.
5. Fill radiator and reservoir tank with water and reinstall radiator cap. When engine coolant over flows disconnected heater hose, connect heater hose, and continue filling the engine coolant.
6. Connect vacuum hose, and install vacuum tube.
7. Install air duct (suction side), air cleaner cover assembly and air cleaner body assembly. Refer to " «EXPLODED VIEW»(ref-516394-S31888619102012120600000) ".
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 " «DRAINING»(ref-516398-S08374559152012120600000) ".
12. Repeat steps 1 through 9 until clear water begins to drain from radiator.

Scheme 20

Scheme 21

Scheme 22

1. Check valve seat (A) of radiator cap. Check that valve seat is swollen to the extent that the edge of the plunger cannot be seen when watching it vertically from the top. Check that valve seat has no soil and damage.
2. Pull negative-pressure valve to open it, and that it close completely when released. 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.
3. Check radiator cap relief pressure. Standard and Limit: Refer to " «RADIATOR»(ref-516398-S23670404892012120600000) ". When connecting radiator cap to the radiator cap tester (commercial service tool) (A) and the radiator cap tester adapter (commercial service tool) (B), apply engine coolant to the cap seal surface.
4. Replace radiator cap if there is an unusualness related to the above three.