2001 NISSAN X-TRAIL cooling

MODEL T30 SERIES
© 2002 NISSAN EUROPE S.A.S.
All rights reserved. No part of this Electronic Service Manual may be reproduced or stored in a retrieval system, or transmitted in any
form, or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of Nissan
Europe S.A.S., Paris, France.
A GENERAL INFORMATION
B ENGINE
C TRANSMISSION/
TRANSAXLE
D DRIVELINE/AXLE
E SUSPENSION
F BRAKES
G STEERING
H RESTRAINTS
IBODY
J AIR CONDITIONER
K ELECTRICAL
L MAINTENANCE
M INDEXGI General Information
EM Engine Mechanical
LU Engine Lubrication System
CO Engine Cooling System
EC Engine Control System
FL Fuel System
EX Exhaust System
ACC Accelerator Control System
CL Clutch
MT Manual Transaxle
AT Automatic Transaxle
TF Transfer
PR Propeller Shaft
RFD Rear Final Drive
FAX Front Axle
RAX Rear Axle
FSU Front Suspension
RSU Rear Suspension
WT Road Wheels & Tires
BR Brake System
PB Parking Brake System
BRC Brake Control System
PS Power Steering System
SB Seat Belts
SRS Supplemental Restraint System (SRS)
BL Body, Lock & Security System
GW Glasses, Window System & Mirrors
RF Roof
EI Exterior & Interior
IP Instrument Panel
SE Seat
ATC Automatic Air Conditioner
MTC Manual AIr Conditioner
SC Starting & Charging System
LT Lighting System
DI Driver Information System
WW Wiper, Washer & Horn
BCS Body Control System
LAN LAN System
AV Audio, Visual & Telephone System
PG Power Supply, Ground & Circuit Elements
MA Maintenance
IDX Alphabetical Index
QUICK REFERENCE INDEX
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EM-118
[YD22DDTi]
DRIVE BELTS
DRIVE BELTS
PFP:02117
Checking Drive BeltsEBS00LRA
●Before inspecting the engine, make sure the engine has cooled
down; wait approximately 30 minutes after the engine has been
stopped.
●Visually inspect all belts for wear, damage or cracks on contact-
ing surfaces and edge areas.
●When measuring deflection, apply 98 N (10 kg, 22 lb) at the
marked point ( ).
CAUTION:
●When checking belt deflection immediately after installa-
tion, first adjust it to the specified value. Then, after turn-
ing the crankshaft two turns or more, re-adjust to the
specified value to avoid variation in deflection between
pulleys.
●Tighten idler pulley lock nut by hand and measure deflection without looseness.
Belt Deflection:
*: When engine is cold.
Tension AdjustmentEBS00LRB
●Adjust belts with the parts shown below.
CAUTION:
●When a new belt is installed as a replacement, adjust it to the value specified under “New” value
because of insufficient adaptability with pulley grooves.
●If the belt deflection of the current belt is out of the “Limit for re-adjusting”, adjust to the
“Adjusted” value.
●When checking belt deflection immediately after installation, first adjust it to the specified value.
Then, after turning crankshaft two turns or more, re-adjust it to the specified value to avoid vari-
ation in deflection between pulleys.
●Make sure the belts are fully fitted into the pulley grooves during installation.
●Handle with care to avoid smearing the belts with engine oil or cooling water etc.
●Do not twist or bend the belts with strong force.
JEM249G
Applied beltBelt deflection with 98 N (10 kg, 22 lb) force applied* mm (in)
New Adjusted Limit for re-adjusting
Air conditioner compressor belt 4 - 5 (0.16 - 0.20) 6 - 7 (0.24 - 0.28) 8.5 (0.335)
Alternator and water pump belt 9.0 - 10.5 (0.354 - 0.413) 11.0 - 12.5 (0.433 - 0.492) 16.5 (0.650)
Applied belt Belt adjustment method
Air conditioner compressor belt Adjusting bolt on idler pulley
Alternator and water pump belt Adjusting bolt on alternator

CYLINDER HEAD
EM-191
[YD22DDTi]
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EM
2. Machine cylinder head inner diameter at valve seat installation
position.
3. Heat cylinder head to approximately 110 to 130°C (230 to
266°F) in oil bath.
4. After cooling valve seats sufficiently with dry ice, press fit it to cylinder head.
CAUTION:
●Do not touch the cooled valve seats directly by hand.
●Cylinder head contains heat, when working, wear protective equipment to avoid getting burned.
5. Using valve seat cutter, finish processing referring to the dimen-
sions shown in the figure.
CAUTION:
When using valve seat cutter, grasp cutter handle with both
hands, press cutter onto contacting face all around, and cut
thoroughly. If cutter is pressed unevenly or repeatedly, the
valve seat surface may be damaged.
6. Using compound, perform valve fitting.
7. Check again to make sure that contacting status is satisfactory.
For details, Refer to EM-190, "
Valve Seat Contact" . Machining dimension:
Intake
30.500 - 30.516 mm (1.2008 - 1.2014 in)
Exhaust
29.500 - 29.516 mm (1.1614 - 1.1620 in)
SEM795A
FEM075
SBIA0197E

CO-1
ENGINE COOLING SYSTEM
B ENGINE
CONTENTS
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SECTION
A
CO
ENGINE COOLING SYSTEM
QR
PRECAUTIONS .......................................................... 3
Precautions For Liquid Gasket ................................. 3
REMOVAL OF LIQUID GASKET .......................... 3
LIQUID GASKET APPLICATION PROCEDURE ..... 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
OVERHEATING CAUSE ANALYSIS .......................... 5
Troubleshooting Chart .............................................. 5
COOLING SYSTEM .................................................... 7
Cooling Circuit .......................................................... 7
System Drawing ....................................................... 8
ENGINE COOLANT .................................................... 9
Inspection ................................................................. 9
LEVEL CHECK ..................................................... 9
CHECKING RADIATOR SYSTEM FOR LEAKS ..... 9
Changing Engine Coolant ........................................ 9
DRAINING ENGINE COOLANT ........................... 9
REFILLING ENGINE COOLANT ........................ 10
FLUSHING COOLING SYSTEM ......................... 10
RADIATOR .................................................................11
Removal and Installation ......................................... 11
REMOVAL ............................................................ 11
INSTALLATION .................................................... 11
Disassembly and Assembly Radiator Fan ............. 12
DISASSEMBLY ................................................... 12
ASSEMBLY ......................................................... 12
Checking Radiator Cap .......................................... 12
Checking Radiator .................................................. 13
RADIATOR (ALUMINUM TYPE) .............................. 14
Disassembly and Assembly ................................... 14
PREPARATION ................................................... 14
DISASSEMBLY ................................................... 14
ASSEMBLY ......................................................... 15
INSPECTION ...................................................... 17WATER PUMP .......................................................... 18
Removal and Installation ........................................ 18
REMOVAL ........................................................... 18
INSPECTION AFTER REMOVAL ....................... 19
INSTALLATION ................................................... 19
INSPECTION AFTER INSTALLATION ................ 19
THERMOSTAT AND WATER CONTROL VALVE .... 20
Removal and Installation ........................................ 20
REMOVAL ........................................................... 20
INSPECTION AFTER REMOVAL ....................... 21
INSTALLATION ................................................
... 21
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 22
Standard and Limit .................................................. 22
CAPACITY ........................................................... 22
THERMOSTAT .................................................... 22
WATER CONTROL VALVE ................................. 22
RADIATOR ....................................................... ... 22
Tightening Torque ................................................... 22
YD22DDTi
PRECAUTIONS ........................................................ 23
Precautions For Liquid Gasket ............................... 23
REMOVAL OF LIQUID GASKET ......................... 23
LIQUID GASKET APPLICATION PROCEDURE ... 23
PREPARATION ......................................................... 24
Special Service Tools ............................................. 24
OVERHEATING CAUSE ANALYSIS ........................ 25
Troubleshooting Chart ............................................ 25
COOLING SYSTEM .................................................. 27
Cooling Circuit ........................................................ 27
System Drawing ..................................................... 28
ENGINE COOLANT .................................................. 29
Inspection ............................................................... 29
LEVEL CHECK .................................................... 29
CHECKING RADIATOR SYSTEM FOR LEAKS ... 29
Changing Engine Coolant ....................................... 29
DRAINING ENGINE COOLANT .......................... 29
REFILLING ENGINE COOLANT ......................... 30
FLUSHING COOLING SYSTEM ......................... 31

OVERHEATING CAUSE ANALYSIS
CO-5
[QR]
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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 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

COOLING SYSTEM
CO-7
[QR]
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CO
COOLING SYSTEMPFP:21020
Cooling CircuitEBS00KOE
PBIC0234E

CO-8
[QR]
COOLING SYSTEM
System Drawing
EBS00KOF
PBIC1232E

ENGINE COOLANT
CO-9
[QR]
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CO
ENGINE COOLANTPFP:KQ100
InspectionEBS00KOG
LEVEL CHECK
●Check if the reservoir tank engine coolant level within MIN to
MAX when engine is cool.
●Adjust engine coolant if too much or too little.
CHECKING RADIATOR SYSTEM FOR LEAKS
To check for leakage, apply pressure to the cooling system with a
tester.
WARNING:
Never remove the radiator cap when the engine is hot. Serious
burns could occur from high pressure engine coolant escaping
from the radiator.
CAUTION:
Higher pressure than specified may cause radiator damage.
Changing Engine CoolantEBS00KOH
WARNING:
●To avoid being scalded, never change the engine coolant when the engine is hot.
●Wrap a thick cloth around cap and carefully remove the cap. First, turn the cap a quarter of a turn
to release built-up pressure. Then turn the cap all the way.
DRAINING ENGINE COOLANT
1. Open radiator drain plug at the bottom of radiator, and remove
radiator cap.
●Be careful not to allow engine coolant to contact drive belts.
2. Open drain plug on cylinder block.
3. Remove reservoir tank and drain engine coolant.
4. Check drained engine coolant for contaminants such as rust,
corrosion or discoloration.
If contaminated, flush engine cooling system. Refer to CO-10,
"FLUSHING COOLING SYSTEM" .
SMA412B
Testing pressure:
157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC134B
PBIC0236E
KBIA0163E