Juke F15 (2012 year). Service Repair Manual — part 59
CO-60
< SYMPTOM DIAGNOSIS >
[K9K]
OVERHEATING CAUSE ANALYSIS
SYMPTOM DIAGNOSIS
OVERHEATING CAUSE ANALYSIS
Troubleshooting Chart
INFOID:0000000006492606
Symptom
Check items
Cooling sys-
tem parts
malfunction
Poor heat transfer
Water pump malfunction
Worn timing belt
—
Thermostat stuck closed
—
Damaged fins
Dust contamination or pa-
per clogging
Mechanical damage
Clogged radiator cooling
tube
Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow
Cooling fan does not oper-
ate
Fan assembly
—
High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud
—
—
—
Improper coolant mixture
ratio
—
—
—
Poor coolant quality
—
—
—
Insufficient coolant
Coolant leaks
Cooling hose
Loose clamp
Cracked hose
Water pump
Poor sealing
Reservoir tank cap
Loose
Poor sealing
Radiator
O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank
Cracked reservoir tank
Overflowing reservoir tank
Exhaust gas leaks into cool-
ing system
Cylinder head deterioration
Cylinder head gasket deteri-
oration
OVERHEATING CAUSE ANALYSIS
CO-61
< SYMPTOM DIAGNOSIS >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
Except cool-
ing system
parts mal-
function
—
Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Powertrain system malfunc-
tion
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow
Blocked bumper
—
—
Blocked radiator grille
Installed car brassiere
Mud contamination or paper
clogging
Blocked radiator
—
Blocked condenser
—
Installed large fog lamp
Symptom
Check items
CO-62
< PERIODIC MAINTENANCE >
[K9K]
ENGINE COOLANT
PERIODIC MAINTENANCE
ENGINE COOLANT
Inspection
INFOID:0000000006492607
LEVEL
• Check that the reservoir tank engine coolant level is within the
“MIN” to “MAX” when the engine is cool.
• Adjust the engine coolant level if necessary.
LEAKAGE
• To check for leakage, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) (A) and the radiator
cap tester adapter (commercial service tool) (B).
WARNING:
Never remove radiator cap when engine is hot. Serious burns
may occur from high-pressure engine coolant escaping from
radiator.
CAUTION:
Higher test pressure than specified may cause radiator dam-
age.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.
• If anything is found, repair or replace damaged parts.
Draining
INFOID:0000000006492608
WARNING:
• Never remove radiator cap when engine is hot. Serious burns may occur from high-pressure engine
coolant escaping from radiator.
• Wrap a thick cloth around the radiator cap. Slowly turn it a quarter of a turn to release built-up pres-
sure. Then turn it all the way.
1.
Remove engine under cover.
2.
Open radiator drain plug (A) at the bottom of radiator, and then
remove radiator cap.
CAUTION:
Perform this step when engine is cold.
3.
Remove reservoir tank if necessary, and drain engine coolant
and clean reservoir tank before installing. Refer to
4.
Check drained engine coolant for contaminants such as rust,
corrosion or discoloration. If contaminated, flush the engine
cooling system. Refer to
.
5.
Remove air relief plug from water outlet. Refer to
A
: MAX
B
: MIN
JPBIA0102ZZ
Testing pressure: Refer to
PBIC5121J
: Vehicle front
JPBIA3120ZZ
ENGINE COOLANT
CO-63
< PERIODIC MAINTENANCE >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
Refilling
INFOID:0000000006492609
• Before start working, turn off the automatic air conditioner and the blower motor.
1.
Install reservoir tank, radiator drain plug and air relief plug.
2.
Fill reservoir tank slowly with coolant until coolant spills from the air relief hole. Refer to
• Put a cloth under the air relief plug to prevent engine coolant to dampen the crankshaft position
sensor.
• Fill coolant to the MAX level line of the reservoir tank at a rate
of 2 liter (1-3/4 lmp qt)/min or lower.
3.
Close the air relief plug.
CAUTION:
If the filling rate is too fast, this could lead to air being mixed in the coolant. Be sure to fill the cool-
ant slowly according to the rate indicated above.
Use Genuine NISSAN Anti-freeze Coolant or equivalent mixed with water (distilled or demineral-
ized). Refer to
MA-13, "Fluids and Lubricants"
4.
Warm up the engine for approximately five minutes without reservoir tank cap installed, and then turn off
the engine and loose air relief plug until coolant spills from air relief hole.
• If coolant overflows reservoir tank hole, install filler cap.
• Watch engine coolant temperature warning light so as not overheat the engine during all of the
operation.
WARNING:
• Be careful not be scaled with hot engine coolant or vacuum pump when operating.
• Radiator fan blade can start at any time and make personal injuries.
5.
Close the air relief plug and run the engine at 2,000 rpm until the upper hose comes hot and radiator fan
operates. Let the engine running approximately 5 minutes at idle speed and check for sound of coolant
flow while running engine from idle up to 3,000 rpm.
• Sound may be noticeable at heater water cock.
6.
If sound is heard, bleed air from cooling system by repeating steps 4 through 5 until coolant level no
longer drops.
• Check the radiator lower hose for any signs of leakage.
7.
Turn off the engine and let it cool down.
• Cool down using a fan to reduce the time.
8.
After cooling period, loose the air relief plug and check if coolant spills from the air relief hole. In other
case, remove the air relief plug until the coolant spills, and then close the relief air plug. Bleed air from
cooling system by repeating steps 5 through 8 until the coolant spills immediately.
9.
Check the engine coolant level when engine is cool and refill to MAX level line if the level is lower.
• Clean excess coolant from engine.
Flushing
INFOID:0000000006492610
1.
Fill reservoir tank with water until water spills from the air relief hole, then close air relief plug. Reinstall
reservoir tank cap.
2.
Run engine and warm it up to normal operating temperature.
SMA412B
Engine coolant capacity Approx. 6.7 (5 - 7/8 Imp qt)
Reservoir tank capacity 0.7 (5/8 lmp qt)
CO-64
< PERIODIC MAINTENANCE >
[K9K]
ENGINE COOLANT
3.
Rev engine two or three times under no-load.
4.
Stop engine and wait until it cools down.
5.
Drain water.
6.
Repeat steps 1 through 5 until clear water begins to drain from radiator.
7.
Blow compressed air into cooling circuit through the reservoir tank valve hole to drain all the water.
RESERVOIR TANK CAP
CO-65
< PERIODIC MAINTENANCE >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
RESERVOIR TANK CAP
Inspection
INFOID:0000000006492611
• Check valve seat of reservoir tank cap.
- Check if valve seat (A) is swollen to the extent that the edge of the
metal plunger (B) cannot be seen when watching it vertically from
the top.
- Check if valve seat has no soil and damage.
• Pull negative-pressure valve to open it, and check that it close
completely when released.
- Check that there is no dirt or damage on the valve seat of reservoir
tank cap negative-pressure valve.
- Check that there are no unusualness in the opening and closing
conditions of negative-pressure valve.
• Check reservoir tank cap relief pressure.
- When connecting reservoir tank cap to the radiator cap tester
(commercial service tool) and the radiator cap tester adapter (com-
mercial service tool) (A), apply engine coolant to the cap seal sur-
face.
• Replace reservoir tank cap if there is an unusualness related to the above three.
CAUTION:
When installing reservoir tank cap, thoroughly wipe out the reservoir tank filler neck to remove any
waxy residue or foreign material.
JPBIA0108ZZ
SMA967B
Standard and limit
: Refer to
.
JPBIA0109ZZ
CO-66
< REMOVAL AND INSTALLATION >
[K9K]
RADIATOR
REMOVAL AND INSTALLATION
RADIATOR
Exploded View
INFOID:0000000006492612
Removal and Installation
INFOID:0000000006492613
WARNING:
Never remove the reservoir tank cap when the engine is hot. Serious burns could occur from high
pressure coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly turn it a quar-
ter turn to allow built-up pressure to escape. Carefully remove the cap by turning it all the way.
REMOVAL
1.
Drain engine coolant. Refer to
CAUTION:
Perform when engine is cold.
2.
Remove cooling fan shroud assembly. Refer to
.
CAUTION:
Be careful not to damage or scratch the radiator core.
1.
Reservoir tank cap
2.
Reservoir tank
3.
Clamp
4.
Reservoir tank hose
5.
Mounting rubber (upper)
6.
Reservoir tank hose
7.
Radiator
8.
Mounting rubber (lower)
9.
Drain plug
10. O-ring
11. Cooling fan assembly
12. Radiator hose (upper)
13. Radiator hose (lower)
A.
To water outlet
B.
To water inlet
: N·m (kg-m, in-lb)
JPBIA4805GB
RADIATOR
CO-67
< REMOVAL AND INSTALLATION >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
3.
Remove the following parts.
• Front grille assembly: Refer to
.
• Front bumper: Refer to
• Front combination lamp assembly (RH and LH): Refer to
4.
Remove radiator core support (upper).
5.
Remove condenser fixing bolts upper.
6.
Pull up and remove the radiator assembly (1).
CAUTION:
Be careful not to damage radiator core and condenser
assembly core.
INSTALLATION
• Reinstall any parts removed in reverse order of removal.
• Check for engine coolant leaks. Refer to
.
2
: Condenser assembly
: Vehicle front
JPBIA2857ZZ
CO-68
< REMOVAL AND INSTALLATION >
[K9K]
COOLING FAN
COOLING FAN
Exploded View
INFOID:0000000006492614
Removal and Installation
INFOID:0000000006492615
REMOVAL
1.
Drain engine coolant. Refer to
2.
Disconnect radiator hose (lower) clip.
3.
Remove battery. Refer to
4.
Remove air duct (inlet). Refer to
.
5.
Remove fusible link and relay box bracket, and put fusible link and relay box aside.
6.
Remove reservoir tank.
7.
Disconnect fan motor connector and boost pressure control valve harness connector, and put the connec-
tors aside.
8.
Remove boost pressure control valve assembly. Refer to
EC-825, "TURBOCHARGER BOOST CON-
9.
Remove radiator upper hose. Refer to
10. Remove radiator fan and shroud assembly.
1.
Fan motorCooling fan
2.
Fan shroud
3.
Cooling fan
A.
Reverse screw
: Apply thread locking sealant.
: Vehicle front
: N·m (kg-m, in-lb)
JPBIA4806GB
COOLING FAN
CO-69
< REMOVAL AND INSTALLATION >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
11. Remove radiator fan reverse screw.
12. Remove fan motor from fan shroud.
INSTALLATION
Install in the reverse order of removal.
PBIC1486E
CO-70
< REMOVAL AND INSTALLATION >
[K9K]
WATER PUMP
WATER PUMP
Exploded View
INFOID:0000000006492616
Removal and Installation
INFOID:0000000006492617
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
1.
Drain engine coolant. Refer to
CAUTION:
Perform when engine is cold.
2.
Remove front wheel RH.
3.
Remove fender protector (RH). Refer to
4.
Remove drive belt. Refer to
EM-276, "Removal and Installation"
5.
Remove timing belt and inner cover. Refer to
.
6.
Remove the water pump.
• Coolant will leak from the cylinder block, so have a receptacle ready below.
CAUTION:
• Handle the water pump vane so that it does not contact any other parts.
• Water pump cannot be disassembled and should be replaced as a unit.
INSTALLATION
• Install in the reverse order of removal.
Inspection
INFOID:0000000006492618
INSPECTION AFTER REMOVAL
MBIB1232E
1.
Water pump
2.
Gasket
3.
Cylinder block
WATER PUMP
CO-71
< REMOVAL AND INSTALLATION >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
• Visually make sure there is no significant dirt or rusting on the
water pump body and vane.
• Make sure there is no looseness in the vane shaft, and that it turns
smoothly when rotated by hand.
• If there are any unusualness, replace the water pump assembly.
INSPECTION AFTER INSTALLATION
• Check for engine coolant leaks using reservoir tank cap tester. Refer to
MBIB0546E
CO-72
< REMOVAL AND INSTALLATION >
[K9K]
THERMO PLUNGER UNIT
THERMO PLUNGER UNIT
Exploded View
INFOID:0000000006492619
Removal and Installation
INFOID:0000000006492620
REMOVAL
1.
Remove battery cable from the negative terminal.
2.
Drain engine coolant. Refer to
3.
Remove the fender protector (LH). Refer to
4.
Disconnect thermo plunger connector.
5.
Remove the earth lead nut (A).
1.
Side member LH
2.
Thermo plunger control unit
3.
Thermo plunger relay
4.
Thermo plunger connector
5.
Earth lead
6.
Thermo plunger unit
7.
Bracket stay
Vehicle front
: N·m (kg-m, in-lb)
JPBIA3082GB
JPBIA3083ZZ
THERMO PLUNGER UNIT
CO-73
< REMOVAL AND INSTALLATION >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
6.
Remove the thermo plunger connection caps (4).
7.
Remove the thermo plunger connection nuts (B) using the
appropriate tool.
8.
Remove the LH and RH clamps (1) and hoses (2) and (3).
9.
Remove the fixing bolts (A) of the thermo plunger from the
bracket and remove the thermo plunger unit.
INSTALLATION
Installation is basically the reverse order of the removal.
Tightening torque of bolt
: 9.1 N.m
JPBIA3084ZZ
CO-74
< REMOVAL AND INSTALLATION >
[K9K]
THERMOSTAT
THERMOSTAT
Inspection
INFOID:0000000006492621
• Place a thread so that it is caught in the valves of the thermostat.
Immerse fully in a container filled with water. Heat while stirring.
(The example in the figure shows the thermostat.)
• The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
• Continue heating. Check the full-open lift amount.
• After checking the full-open lift amount, lower the water tempera-
ture and check the valve closing temperature.
• If the measured value is out of the standard value or unusual valve
seating condition is found, replace water inlet and thermostat
assembly.
SLC949A
Items
Temperature
°
C (
°
F)
Start of opening
89 (192)
End of opening
97 - 101 (207 - 214)
WATER OUTLET
CO-75
< REMOVAL AND INSTALLATION >
[K9K]
C
D
E
F
G
H
I
J
K
L
M
A
CO
N
P
O
WATER OUTLET
Exploded View
INFOID:0000000006492622
Removal and Installation
INFOID:0000000006492623
REMOVAL
1.
Remove air cleaner case. Refer to
2.
Remove vacuum hose.
3.
Remove vacuum pump. Refer to
4.
Drain engine coolant. Refer to
.
CAUTION:
Perform when engine is cold.
5.
Remove radiator upper hose. Refer to
6.
Remove water hose.
7.
Remove water outlet.
INSTALLATION
Install in the reverse order of removal.
1.
Engine coolant temperature sensor
2.
O-ring
3.
Lock plate
4.
Gasket
5.
Water outlet and thermostat assem-
bly
6.
Air relief plug
7.
Clamp
8.
Water hose
9.
Water pipe
A.
To radiator hose upper
B.
To EGR cooler hose
C.
To heater hose
: N·m (kg-m, ft-lb)
: Always replace after every disassembly.
JPBIA3086GB
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст