Engine Cooling System: Removal & Installation Nissan Juke I facelift

REMOVAL

Note. When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spilling.

Scheme 8

1. Drain engine coolant from radiator. Refer to " «DRAINING»(ref-621380-S29109417532014061000000) ". CAUTION: Perform this step when the engine is cold. Never spill engine coolant on drive belt.
2. Remove engine cover. Refer to " «EXPLODED VIEW»(ref-621377-S26117349032014061000000) ".
3. Remove engine under cover.
4. Remove radiator hose (upper and lower).
5. Remove front bumper. Refer to " «EXPLODED VIEW»(ref-621381-S36772241812014061000000) ".
6. Remove radiator core support upper. Refer to " «REMOVAL AND INSTALLATION»(ref-621384-S38990550532014061000000) " (With Intelligent Key) or " «REMOVAL AND INSTALLATION»(ref-621385-S01510646662014061000000) " (Without Intelligent Key).
7. Disconnect cooling fan harness connector.
8. Remove reservoir tank.
9. Remove cooling fan assembly. CAUTION: Never damage or scratch the radiator core.
10. Remove condenser from radiator and temporarily fasten it on vehicle with a rope.
11. Pull up and remove the radiator assembly (1). CAUTION: Never damage radiator core and condenser assembly core.

INSTALLATION

Note the following, and install in the reverse order of removal.

Note. Insert the radiator hose (1) all the way to the stopper (2) or by 33 mm (1.30 in) (hose without a stopper). For the orientation of the hose clamp pawl, refer to the figure.

Scheme 9

Scheme 10

Scheme 11

1. The angle (b) created by the hose clamp pawl and the specified line (A) must be within ±15° as shown in the figure below.
2. To install hose clamps (1), check that the dimension (A) from the end of the paint mark (2) on the radiator hose to the hose clamp is within the reference value. Dimension "A" 3 mm (0.12 in)

1. Drain engine coolant. Refer to " «DRAINING»(ref-621380-S29109417532014061000000) ". CAUTION: Perform this step engine is cold. Never spill engine coolant on drive belt.
2. Remove engine cover.
3. Remove front bumper. Refer to " «EXPLODED VIEW»(ref-621381-S36772241812014061000000) ".
4. Remove radiator core support upper. Refer to " «REMOVAL AND INSTALLATION»(ref-621384-S38990550532014061000000) " (With Intelligent Key) or " «REMOVAL AND INSTALLATION»(ref-621385-S01510646662014061000000) " (Without Intelligent Key).
5. Disconnect cooling fan harness connector.
6. Remove reservoir tank. Refer to " «EXPLODED VIEW»(ref-621380-S34485826612014061000000) ".
7. Remove radiator hose (upper). Refer to " «EXPLODED VIEW»(ref-621380-S34485826612014061000000) ".
8. Remove cooling fan assembly. CAUTION: Be careful not to damage or scratch on radiator core when removing.

Note the following, and install in the reverse order of removal.

Note. Cooling fan is controlled by ECM. For details, Refer to " COMPONENT FUNCTION CHECK ".

1. Drain engine coolant from radiator. Refer to " «DRAINING»(ref-621380-S29109417532014061000000) ". CAUTION: Perform this step when the engine is cold. Never spill engine coolant on drive belt.
2. Steer front wheel to the right.
3. Remove front fender protector (RH). Refer to " «EXPLODED VIEW»(ref-621381-S40873427832014061000000) ".
4. Remove drive belt. Refer to " «EXPLODED VIEW»(ref-621377-S11758426512014061000000) ".
5. Remove water pump. Engine coolant will leak from cylinder block, so have a receptacle ready below. CAUTION: Handle water pump vane so that it does not contact any other parts. Water pump cannot be disassembled and should be replaced as a unit.

Install in the reverse order of removal.

Scheme 12

1. Check visually that there is no significant dirt or rusting on water pump body and vane (A).
2. Check that there is no looseness in vane shaft, and that it turns smoothly when rotated by hand.
3. Replace water pump, if necessary.

1. Drain engine coolant from radiator. Refer to " «DRAINING»(ref-621380-S29109417532014061000000) ". CAUTION: Perform this step when engine is cold.
2. Remove intake manifold. Refer to " «EXPLODED VIEW»(ref-621377-S02226307312014061000000) ".
3. Disconnect radiator hose (lower) (RH) from water inlet. Refer to " «EXPLODED VIEW»(ref-621380-S34485826612014061000000) ".
4. Remove water inlet and thermostat. Engine coolant leakage from cylinder block, so have a receptacle ready below.

Note the following, and install in the reverse order of removal.

Scheme 13

Scheme 14

1. Install thermostat with making rubber ring (1) groove fit to thermostat flange (A) with the whole circumference.
2. Install thermostat (2) with jiggle valve (A) facing upwards.

Note the following, and install in the reverse order of removal.

Scheme 15

Scheme 16

1. Install water control valve with making rubber ring (1) groove fit to water control valve flange (A) with the whole circumference.
2. Install water control valve (2) with the arrow (A) facing up and the frame center part (B) facing upwards.

Scheme 17

1. Place a thread (A) so that it is caught in the valves of water control valve (1). Immerse fully in a container (B) filled with water. Heat while stirring.
2. The valve opening temperature is the temperature at which the valve opens and falls from the thread.
3. Continue heating. Check the continuous valve lifting toward maximum valve lift. NOTE: The maximum valve lift amount standard temperature for water control valve is the reference value.
4. After checking the maximum valve lift amount, lower the water temperature and check the valve closing temperature. Standard: Refer to " «WATER CONTROL VALVE»(ref-621380-S02451195722014061000000) ".
5. If out of the standard, replace water control valve.