2003 NISSAN X-TRAIL Service Repair Manual

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Page 3585 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ENGINE MAINTENANCE (QR20DE·QR25DE)
MA-25
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Changing Oil FilterELS000ZJ
REMOVAL
1. Open oil filter installation/removal cover on RH undercover.
2. Using an oil filter wrench

Page 3586 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual MA-26
ENGINE MAINTENANCE (QR20DE·QR25DE)

Checking and Changing Spark PlugsELS000ZK
REMOVAL
1. Remove ignition coil. Refer to EM-29, "IGNITION COIL" .
2. Remove spark plug with spark plug wrench (c

Page 3587 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ENGINE MAINTENANCE (YD22DDTI)
MA-27
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ENGINE MAINTENANCE (YD22DDTI) PFP:00100
Checking Drive BeltsELS000CC
Before inspecting the engine, make sure the engine has cooled
down

ENGINE MAINTENANCE (YD22DDTI)
MA-27
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ENGINE MAINTENANCE (YD22DDTI) PFP:00100
Checking Drive BeltsELS000CC
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 AdjustmentELS000K5
Adjust belts with the parts shown below.
CAUTION:
When a new belt is installed as a replacement, adjust it to the specified value 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 varia-
tion 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 engine coolant etc.
Do not twist or bend the belts with strong force.
PBIC1251E
Applied beltBelt deflection with 98 N (10 kg, 22 lb) force applied* mm (in)
New Adjusted Limit for re-adjusting
A/C 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
A/C compressor belt Adjusting bolt on idler pulley
Alternator and water pump belt Adjusting bolt on alternator

Page 3588 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual MA-28
ENGINE MAINTENANCE (YD22DDTI)

A/C COMPRESSOR BELT
1. Remove RH engine undercover.
2. Loosen idler pulley lock nut (A).
3. Turn adjusting bolt (B) to adjust.
Refer to MA-27, "Checking Drive Be

Page 3589 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ENGINE MAINTENANCE (YD22DDTI)
MA-29
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3. Remove air relief plug.
4. Open cylinder block drain plug. Refer to EM-212, "
CYLINDER BLOCK" .
5. Remove reservoir tank, drain engin

Page 3590 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual MA-30
ENGINE MAINTENANCE (YD22DDTI)

7. Repeat steps 2 through 5 two or more times with radiator cap installed until engine coolant level no longer
drops.
8. Check cooling system for leaks with engin

MA-30
ENGINE MAINTENANCE (YD22DDTI)

7. Repeat steps 2 through 5 two or more times with radiator cap installed until engine coolant level no longer
drops.
8. Check cooling system for leaks with engine running.
9. Warm up engine, and check for sound of engine coolant flow while running engine from idle up to 3,000
rpm with heater temperature controller set at several position between COOL and WARM.
Sound may be noticeable at heater unit.
10. Repeat step 9 three times.
11. If sound is heard, bleed air from cooling system by repeating steps 2 through 5 until engine coolant level
no longer drops.
Clean excess engine coolant from engine.
FLUSHING COOLING SYSTEM
1. Fill radiator with water until water spills from the air relief hole, then close air relief flag. Fill radiator and
reservoir tank with water and reinstall radiator cap.
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 from the system. Refer to MA-28, "
DRAINING ENGINE COOLANT" .
6. Repeat steps 1 through 5 until clear water begins to drain from radiator.
Checking Cooling SystemELS000C4
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
engine 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.
CHECKING COOLING SYSTEM HOSES
Check hoses for improper attachment, leaks, cracks, damage, loose connections, chafing and deterioration.
CHECKING RADIATOR
Check radiator for mud or clogging. If necessary, clean radiator as follows.
Be careful not to bend or damage the radiator fins.
When 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.
Use compressed air lower than 490 kpa (4.9 bar, 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.
CHECKING RADIATOR CAP
1. Pull negative-pressure valve to open it and make sure that it
closes completely when released.
Make sure that there is no dirt or damage on the valve seat of
radiator cap negative-pressure valve.
Make sure that there are no unusualness in the opening and
closing conditions of negative-pressure valve.
SMA967B

Page 3591 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual ENGINE MAINTENANCE (YD22DDTI)
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2. Check radiator cap relief pressure.
When connecting radiator cap to radiator cap tester (commer-
cial service tool) and radiator cap

Page 3592 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual MA-32
ENGINE MAINTENANCE (YD22DDTI)

REMOVAL
1. Remove air duct, air cleaner case and mass air flow sensor assembly. Refer to EM-133, "AIR CLEANER
AND AIR DUCT" .
2. Remove fuel filter protector.
3.

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