2005 NISSAN X-TRAIL engine cooling pump

EM-82
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ENGINE ASSEMBLY

REMOVAL
Outline
Remove engine and transaxle assembly from vehicle downward. Separate engine and transaxle.
Preparation
1. Remove hood assembly. Refer to BL-12, "HOOD" .
2. Release fuel pressure. Refer to EC-49, "
FUEL PRESSURE RELEASE" (WITH EURO-OBD) or EC-562,
"FUEL PRESSURE RELEASE" (WITHOUT EURO-OBD).
3. Drain engine coolant from radiator. Refer to CO-9, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belt.
4. Remove the following parts.

LH and RH undercovers

Front road wheels and tyres

Battery; Refer to SC-4, "BATTERY" .

Drive belt; Refer to EM-13, "DRIVE BELTS" .

Air duct and air cleaner case assembly; Refer to EM-16, "AIR CLEANER AND AIR DUCT" .

Alternator; Refer to SC-13, "CHARGING SYSTEM" .

Radiator and radiator cooling fan assembly; Refer to CO-12, "RADIATOR" .
5. Disconnect engine room harness from the engine side and set it aside for easier work.
6. Disconnect all vacuum hoses and air hoses connected to vehicle side at engine side.
Engine Room LH
1. Disconnect fuel feed hoses, and plug them to prevent fuel from draining. Refer to EM-34, "FUEL INJEC-
TOR AND FUEL TUBE" .
2. Disconnect heater hoses, and install plugs them to prevent engine coolant from draining. Refer to CO-23,
"THERMOSTAT AND WATER CONTROL VALVE" .
3. Disconnect clutch operating cylinder from transaxle, and move it aside. Refer to CL-12, "
OPERATING
CYLINDER" .
4. Disconnect shift and select cable from transaxle. Refer to MT-16, "
CONTROL LINKAGE" .
5. Disconnect B terminal harness of starter motor. Refer to SC-23, "
STARTING SYSTEM" .
Engine Room RH
1. Remove engine coolant reservoir tank. Refer to CO-12, "RADIATOR" .
2. Remove A/C compressor with piping connected from engine. Temporarily secure it on vehicle side with a
rope to avoid putting load on it. Refer to ATC-144, "
Removal and Installation of Compressor" .
3. Remove power steering oil pump with piping connected from engine. Temporarily secure it on vehicle side
with a rope to avoid putting load on it. Refer to PS-37, "
HYDRAULIC LINE" .
Vehicle Underbody
1. Remove exhaust front tube. Refer to EX-2, "EXHAUST SYSTEM" .
2. Remove transaxle joint bolts which pierce at oil pan (upper) lower rear side. Refer to MT-19, "
TRAN-
SAXLE ASSEMBLY" .
3. Remove front wheel sensor (LH and RH) for ABS from steering knuckle. Refer to BRC-46, "
WHEEL SEN-
SORS" .
4. Remove brake caliper assembly with piping connected from steering knuckle. Temporarily secure it on the
vehicle side with a rope to avoid load on it. Refer to BR-27, "
FRONT DISC BRAKE" .
5. Remove LH and RH drive shafts from steering knuckle. Refer to FAX-11, "
FRONT DRIVE SHAFT" .
Removal
1. Install engine slingers into front-left of cylinder head and rear-right of cylinder head.

EM-88
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ENGINE ASSEMBLY

9. Remove power steering oil pump with piping connected from engine. Move it aside on front suspension
member. Refer to PS-37, "
HYDRAULIC LINE" .
10. Remove front engine mounting and rear engine mounting through-bolts to remove front suspension mem-
ber and center member.
11. Remove starter motor. Refer to SC-23, "
STARTING SYSTEM" .
12. Separate engine and transaxle. Refer to MT-19, "
TRANSAXLE ASSEMBLY" (M/T models) or AT- 4 1 3 ,
"REMOVAL AND INSTALLATION" (A/T models).
INSTALLATION
Note the following, and install in the reverse order of removal.

Do not allow engine oil to get on engine mounting insulator. Be careful not to damage engine mounting
insulator.

When installation directions are specified, install parts according to the direction marks on them referring
to figure of components. Refer to EM-85, "
Removal and Installation (4WD Models)" .

Make sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

ENGINE ASSEMBLY
EM-229
[YD22DDTi]
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9. Remove power steering oil pump with piping connected from engine. Move it aside on suspension mem-
ber. Refer to PS-37, "
HYDRAULIC LINE" .
10. Remove front engine mounting and rear engine mounting through-bolts to remove suspension member.
11. Remove starter motor. Refer to SC-23, "
STARTING SYSTEM" .
12. Separate engine and transaxle and transfer assembly. Refer to MT-19, "
TRANSAXLE ASSEMBLY" .
INSTALLATION
Install in the reverse order of removal.

Do not allow engine oil to get on mounting insulator. Be careful not to damage mounting insulator.

When installation directions are specified, install parts according to the direction marks on them referring
to figure of components. Refer to EM-222, "
ENGINE ASSEMBLY" .

Make sure that each mounting insulator is seated properly, and tighten mounting bolts and nuts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Before starting engine, bleed air from fuel piping. Refer to FL-18, "Air Bleeding" .

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION CO
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ENGINE COOLING SYSTEM
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PRECAUTIONS .......................................................... 3
Precautions for Liquid Gasket .................................. 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4
OVERHEATING CAUSE ANALYSIS .......................... 5
Troubleshooting Chart .............................................. 5
COOLING SYSTEM .................................................... 7
Cooling Circuit .......................................................... 7
System Chart ........................................................... 8
ENGINE COOLANT .................................................... 9
Inspection ................................................................. 9
LEVEL CHECK ..................................................... 9
LEAK CHECK ....................................................... 9
Changing Engine Coolant ........................................ 9
DRAINING ENGINE COOLANT ........................... 9
REFILLING ENGINE COOLANT ........................ 10
FLUSHING COOLING SYSTEM ......................... 10
RADIATOR ................................................................ 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 13
INSPECTION AFTER INSTALLATION ............... 13
Checking Radiator Cap .......................................... 13
Checking Radiator .................................................. 13
RADIATOR (ALUMINUM TYPE) .............................. 15
Disassembly and Assembly ................................... 15
PREPARATION ................................................... 15
DISASSEMBLY ................................................... 15
ASSEMBLY ......................................................... 16
INSPECTION ...................................................... 18
COOLING FAN ......................................................... 19
Removal and Installation ........................................ 19
REMOVAL ........................................................... 19INSTALLATION ................................................... 19
Disassembly and Assembly .................................... 20
DISASSEMBLY ................................................... 20
INSPECTION AFTER DISASSEMBLY ................ 20
ASSEMBLY ......................................................... 20
WATER PUMP .......................................................... 21
Removal and Installation ........................................ 21
REMOVAL ........................................................... 21
INSPECTION AFTER REMOVAL ....................... 22
INSTALLATION ................................................... 22
INSPECTION AFTER INSTALLATION ................ 22
THERMOSTAT AND WATER CONTROL VALVE .... 23
Removal and Installation ........................................ 23
REMOVAL ........................................................... 23
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
INSPECTION AFTER INSTALLATION ................ 24
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 25
Standard and Limit .................................................. 25
CAPACITY ........................................................... 25
RADIATOR .......................................................... 25
THERMOSTAT .................................................... 25
WATER CONTROL VALVE ................................. 25
Tightening Torque ................................................... 25
YD22DDTi
PRECAUTIONS ........................................................ 26
Precautions For Liquid Gasket ............................... 26
LIQUID GASKET APPLICATION PROCEDURE ... 26
PREPARATION ......................................................... 27
Special Service Tools ............................................. 27
Commercial Service Tools ...................................... 27
OVERHEATING CAUSE ANALYSIS ........................ 28
Troubleshooting Chart ............................................ 28
COOLING SYSTEM .................................................. 30
Cooling Circuit ........................................................ 30
System Chart .......................................................... 31
ENGINE COOLANT .................................................. 32
Inspection ............................................................... 32

CO-2 LEVEL CHECK .................................................... 32
CHECKING RADIATOR SYSTEM FOR LEAKS ... 32
Changing Engine Coolant ....................................... 32
DRAINING ENGINE COOLANT .......................... 32
REFILLING ENGINE COOLANT ......................... 33
FLUSHING COOLING SYSTEM ......................... 34
RADIATOR ................................................................ 35
Removal and Installation ........................................ 35
REMOVAL ........................................................... 35
INSTALLATION .................................................... 35
INSPECTION AFTER INSTALLATION ................ 35
Checking Radiator Cap .......................................... 36
Checking Radiator .................................................. 36
COOLING FAN .......................................................... 37
Removal and Installation ........................................ 37
REMOVAL ........................................................... 37
INSTALLATION .................................................... 37
DISASSEMBLY AND ASSEMBLY ....................... 37
RADIATOR (ALUMINUM TYPE) ............................... 39
Disassembly and Assembly .................................... 39
PREPARATION ................................................... 39
DISASSEMBLY ................................................... 39
ASSEMBLY ......................................................... 40
INSPECTION ....................................................... 42WATER PUMP ........................................................... 43
Removal and Installation ......................................... 43
REMOVAL ............................................................ 43
INSPECTION AFTER REMOVAL ........................ 44
INSTALLATION .................................................... 44
INSPECTION AFTER INSTALLATION ................ 44
THERMOSTAT AND WATER PIPING ....................... 45
Removal and Installation ......................................... 45
REMOVAL ............................................................ 45
INSPECTION AFTER REMOVAL ........................ 46
INSTALLATION .................................................... 46
INSPECTION AFTER INSTALLATION ................ 46
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 47
Standard and Limit .................................................. 47
CAPACITY ........................................................... 47
THERMOSTAT ..................................................... 47
RADIATOR ........................................................... 47
Tightening Torque ................................................... 47

OVERHEATING CAUSE ANALYSIS
CO-5
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OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartEBS00KOD
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat and water con-
trol valve stuck closed—
Damaged finsDust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ate
Fan assembly — High resistance to fan rota-
tion
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio—— —
Poor engine coolant quality — Engine coolant viscosity —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deterioration
Cylinder head gasket dete-
rioration

SERVICE DATA AND SPECIFICATIONS (SDS)
CO-25
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SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Standard and LimitEBS00KOP
CAPACITY
Unit: (lmp qt)
RADIATOR
Unit: kPa (bar, kg/cm2 , psi)
THERMOSTAT
WATER CONTROL VALVE
*: Reference data
Tightening TorqueEBS00KOQ
Unit: N·m (kg-m, ft-lb)
Unit: N·m (kg-m, in-lb)*
Engine coolant capacity (With reservoir tank at “MAX” level) Approx. 7.1 (6-1/4)
Reservoir tank0.7 (5/8)
Cap relief pressureStandard 78 - 98 (0.78 - 0.98, 0.8 - 1.0, 11- 14)
Limit 59 (0.59, 0.6, 9)
Leakage test pressure 157 (1.57, 1.6, 23)
Valve opening temperature 80.5 - 83.5°C (177 - 182°F)
Maximum valve lift 8 mm/ 95°C (0.315 in/ 203°F)
Valve closing temperature 77°C (171°F)
Valve opening temperature 93.5 - 96.5°C (200 - 206°F)
Maximum valve lift 8 mm/ 108°C (0.315 in/ 226°F)*
Valve closing temperature 90°C (194°F)
Radiator mounting bracket 5.5 (0.56, 49)*
Radiator cooling fan assembly 5.5 (0.56, 49)*
Cooling fan3.43 (0.35, 30)*
Fan motor4.41 (0.45, 39)*
Water pump24.5 (2.5, 18)
Water pump housing28.0 (2.9, 21)
Water pipe28.0 (2.9, 21)
Water inlet28.0 (2.9, 21)
Water control valve housing (water outlet) 28.0 (2.9, 21)
Hater pipe28.0 (2.9, 21)
Engine coolant temperature sensor 24.5 (2.5, 18)

CO-28
[YD22DDTi]
OVERHEATING CAUSE ANALYSIS

OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartEBS00BAW
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ateRefer to DTC in EC1217
(cooling system)
— High resistance to fan rota-
tion
Fan assembly
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio—— —
Poor engine coolant quality — Engine coolant density —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deterioration
Cylinder head gasket dete-
rioration