2003 NISSAN X-TRAIL radiator

RADIATOR
CO-35
[YD22DDTi]
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lCheck radiator cap relief pressure.
lWhen connecting the radiator cap to the tester, apply water or
LLC to the cap seal part.
lReplace the radiator cap if there is an unusualness in the nega-
tive-pressure valve, or if the open-valve pressure is outside of
the standard values.
Checking RadiatorEBS00BRH
Check radiator for mud or clogging. If necessary, clean radiator as follows.
lBe careful not to bend or damage the radiator fins.
lWhen radiator is cleaned without removal, remove all surrounding parts such as cooling fan, radiator
shroud and horns. Then tape the harness and connectors to prevent water from entering.
1. Apply water by hose to the back side of the radiator core vertically downwards.
2. Apply water again to all radiator core surface once per minute.
3. Stop washing if any stains no longer flow out from the radiator.
4. Blow air into the back side of radiator core vertically downwards.
lUse compressed air lower than 490 kpa (4.9bar 5 kg/cm2, 71psi) and keep distance more than 30
cm(11.8 in).
5. Blow air again into all the radiator core surface once per minute until no water sprays out.Standard
: 78 - 98 kpa (0.78 - 0.98bar, 0.8 - 1.0 kg/cm
2
,11-14psi)
Limit : 59kpa (0.59 bar, 0.6 kg/cm
2,9psi)
SLC135B

CO-36
[YD22DDTi]
RADIATOR (ALLUMINUM TYPE)
RADIATOR (ALLUMINUM TYPE)
PFP:21460
Disassembly and AssemblyEBS00BB3
PREPARATION
1. Attach the spacer to the tip of the radiator plate pliers A.
Spacer specification: 1.5 mm (0.059 in) thick x 18 mm (0.71 in)
wide x 8.5 mm (0.335 in) long.
2. Make sure that when radiator plate pliers A are closed dimen-
sion H¢¢is approx. 7.6 mm (0.299 in).
3. Adjust dimension H¢¢with the spacer, if necessary.
DISASSEMBLY
1. Remove tank with Tool.
SLC882AB
SLC655C
SLC903

RADIATOR (ALLUMINUM TYPE)
CO-37
[YD22DDTi]
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lGrip the crimped edge and bend it upwards so that Tool slips
off.
Do not bend excessively.
lIn areas where Tool cannot be used, use a screwdriver to bend
the edge up.
Be careful not to damage tank.
2. Make sure the edge stands straight up.
3. Remove oil cooler from tank. (A/T model only)
ASSEMBLY
1. Install oil cooler. (A/T model only)
Pay attention to direction of conical washer.
SLC893
SLC930
SLC931
SLC894

CO-38
[YD22DDTi]
RADIATOR (ALLUMINUM TYPE)
2. Clean contact portion of tank.
3. Install sealing rubber.
Push it in with fingers.
Be careful not to twist sealing rubber.
4. Caulk tank in specified sequence with Tool.
lUse pliers in the locations where Tool cannot be used.
SLC932
SLC917A
SLC904
SLC896
SLC897

RADIATOR (ALLUMINUM TYPE)
CO-39
[YD22DDTi]
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5. Make sure that the rim is completely crimped down.
6. Confirm that there is no leakage.
Refer to Inspection.
INSPECTION
1. Apply pressure with Tool.
WAR NIN G:
To prevent the risk of the hose coming undone while under
pressure, securely fasten it down with a hose clamp.
Attach a hose to the oil cooler as well. (A/T model only)
2. Check for leakage.Standard height “H” : 8.0 - 8.4 mm (0.315 - 0.331 in)
SLC554A
Specified pressure
value: 157 kPa (1.57 bar, 1.6 kg/cm2,
23 psi)
SLC933
SLC934

CO-40
[YD22DDTi]
WATER PUMP
WAT ER PU M P
PFP:21020
Removal and InstallationEBS00BB4
WAR NIN G:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
1. Remove the under cover, splash cover (right), and drive belt.
2. Drain engine coolant. Refer toCO-30, "
DRAINING ENGINE COOLANT".
CAUTION:
Perform when the engine is cold.
3. Support the bottom of the oil pan with a floor jack etc, and remove the right engine mount bracket (front
side of the engine).
4. Remove the water pump pulley.
lLoosen the pulley bolts after fixing the pulley using a screwdriver etc.
5. Remove engine mount bracket.
6. Remove the water pump.
lCoolant will leak from the cylinder block, so have a receptacle ready below.
CAUTION:
lHandle the water pump vane so that it does not contact any other parts.
lWater pump cannot be disassembled and should be replaced as a unit.
INSPECTION AFTER REMOVAL
lVisually check that there is no significant dirt or rusting on the
water pump body and vane.
lCheck that there is no looseness in the vane shaft, and that it
turns smoothly when rotated by hand.
lIf there are any unusualness, replace the water pump assembly.
INSTALLATION
lInstall in the reverse order of removal
JLC294B
SBIA0132E

WATER PUMP
CO-41
[YD22DDTi]
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lInstall the water pump pulley with the front mark (painted white, used to prevent errors during assembly)
facing the front of the engine. Refer to the figure above.
INSPECTION AFTER INSTALLATION
lCheck for engine coolant leaks using radiator cap tester. Refer toCO-30, "LEAK CHECK".

CO-42
[YD22DDTi]
THERMOSTAT AND WATER PIPING
THERMOSTAT AND WATER PIPING
PFP:21200
Removal and InstallationEBS00BK9
WAR NIN G:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
1. Remove the under cover and splash cover (right and left).
2. Drain engine coolant. Refer toCO-30, "
DRAINING ENGINE COOLANT".
CAUTION:
Perform when the engine cold.
3. Remove radiator lower hose from water inlet side.
4. Remove water inlet and thermostat.
5. Remove thermostat housing.
SBIA0133E
1 Thermostat 2 Water inlet 3 Thermostat housing
4 Water inlet pipe 5 Heater return pipe 6 Gasket