NISSAN X-TRAIL 2003 Electronic Repair Manual

ENGINE COOLANT
CO-11
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2. Run engine and warm it up to normal operating temperature.
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.

CO-12
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RADIATOR
RADIATOR
PFP:21400
Removal and InstallationEBS009SF
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. Wrap a thick cloth around the cap. Slowly turn it a quarter turn to
allow built-up pressure to escape. Carefully remove the cap by turning it all the way.
REMOVAL
1. Drain coolant. Refer toCO-9, "DRAINING ENGINE COOLANT".
2. Remove air duct with air cleaner assembly.
3. Remove A/T oil cooler hose.
lInstall blind plug to avoid leakage of A/T fluid.
4. Disconnect radiator upper hose, lower hose and mounting bracket.
5. Remove radiator and radiator fan assembly
CAUTION:
lDo not damage or scratch radiator core when removing.
INSTALLATION
lReinstall any parts removed in reverse order of removal.
lCheck for coolant leaks. Refer toCO-9, "LEAK CHECK".
PBIC0237E
1 Radiator 2 Bracket 3 Mounting rubber
4 A/T oil cooler hose 5 Radiator hose (lower) 6 Radiator fan assembly
7 Reservoir tank 8 Radiator hose (upper) 9 Radiator filler cap

RADIATOR
CO-13
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Disassembly and Assembly Radiator FanEBS009SG
DISASSEMBLY
1. Remove radiator fan.
2. Remove insulator.
3. Remove fan motor from fan shroud.
ASSEMBLY
lInstall in the reverse order of removal.
INSPECTIONEBS009SH
CHECKING RADIATOR CAP
lCheck that there is no dirt or damage on the valve seat of the radiator cap negative-pressure valve.
lCheck that there are no unusualness in the opening and closing
conditions of the negative-pressure valve.
lPull the negative pressure valve to open it.
lCheck that it close completely when released.
PBIC0238E
1 Radiator fan motors 2 Radiator fan shroud 3 Radiator fan
SMA967B

CO-14
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RADIATOR
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 RADIATOR
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.
lUsecompressedairlowerthan490kPa(5kg/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 - 14 psi)
Limit
: 59kpa (0.59bar, 0.6kg/cm
2,9psi)
SLC135B

RADIATOR (ALUMINUM TYPE)
CO-15
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RADIATOR (ALUMINUM TYPE)PFP:21460
Disassembly and AssemblyEBS009SI
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

CO-16
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RADIATOR (ALUMINUM TYPE)
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

RADIATOR (ALUMINUM TYPE)
CO-17
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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

CO-18
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RADIATOR (ALUMINUM TYPE)
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

WATER PUMP
CO-19
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WATER P UM PPFP:21020
Removal and InstallationEBS009SJ
WA RN ING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
REMOVAL
Water Pump Removal
1. Drain coolant. Refer toCO-9, "DRAINING ENGINE COOLANT".
CAUTION:
Perform when the engine is cold.
2. Remove the following parts.
lEngine under cover
lAlternator, water pump and air compressor belt
Refer to drive beltEM-13, "
Removal and Installation".
3. Remove 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.
Water Pump Housing Removal
1. Perform step 1 and 2 of “Water Pump Removal”.
2. Remove alternator.
3. Remove oil level gauge.
CAUTION:
Plug the oil level gauge guide opening to prevent oil pan from entering foreign materials.
4. Remove bolts mounting water pipe.
5. Remove water pump housing.
Water Pipe Removal
1. Remove water pump housing.
KBIA0154E
1 Water pump 2 Gasket 3 Water pump housing
4 Water pipe

CO-20
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WATER PUMP
2. Remove exhaust manifold and three way catalyst assembly. Refer toEM-22, "EXHAUST MANIFOLD
AND THREE WAY CATALYST".
3. Remove water pipe.
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
lWhen inserting water pipe end to cylinder block, apply a neutral detergent to o-ring. Then insert it immedi-
ately.
INSPECTION AFTER INSTALLATION
lCheck for coolant leaks using radiator cap tester. Refer toCO-9, "LEAK CHECK".
KBIA0155E