Page 1041 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual ENGINE COOLANT
CO-31
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
3. Open drain plugs on cylinder block and air relief plug.
4. Check drained coolant for contaminants such as rust, corrosion
or discoloration. NISSAN X-TRAIL 2003 Electronic Repair Manual ENGINE COOLANT
CO-31
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
3. Open drain plugs on cylinder block and air relief plug.
4. Check drained coolant for contaminants such as rust, corrosion
or discoloration.](/manual-img/5/57402/w960_57402-1040.png)
ENGINE COOLANT
CO-31
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
3. Open drain plugs on cylinder block and air relief plug.
4. Check drained coolant for contaminants such as rust, corrosion
or discoloration.
If contaminated, flush engine cooling system. Refer toCO-32,
"FLUSHING COOLING SYSTEM".
REFILLING ENGINE COOLANT
1. Install reservoir tank, radiator drain plug and cylinder block drain plug.
Apply sealant to the thread of cylinder block drain plug.
lUse Genuine Liquid Gasket or equivalent.
2. Fill radiator slowly with coolant until coolant spills from the air
relief plugs, then install air relief plugs.
CAUTION:
If the filling rate is too fast, this could lead to air being
mixed in the coolant. Be sure to fill the coolant slowly
according to the rate indicated above.
lReplace the copper washer of the air bleeding plug.
lUse genuine Nissan anti-freeze coolant or equivalent mixed with water (distilled or demineralized).
Refer toMA-17, "
RECOMMENDED FLUIDS AND LUBRICANTS".
lPour coolant through coolant filler neck slowly of less than 2 (1-3/4 lmp qt) a minute to allow air
in system to escape.
SBIA0129E
SBIA0130E
: 7.8 - 11.8 N·m (0.8 -1.2 kg-m , 69 - 104 in-lb)
Air relief plug :
: 6.7 - 7.9 N·m (0.68 - 0.81 kg-m, 59 - 70 in-lb)
Engine coolant capacity (With reservoir tank):
9.5 ( 8-3/8 Imp qt)
SMA182B
Reservoir tank : 0.6 (1/2 lmp qt )
Page 1042 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual CO-32
[YD22DDTi]
ENGINE COOLANT
3. Fill reservoir tank to specified level.
4. Warm up engine to normal operating temperature without radia-
tor cap installed.
lIf coolant overflows radiator filler hol NISSAN X-TRAIL 2003 Electronic Repair Manual CO-32
[YD22DDTi]
ENGINE COOLANT
3. Fill reservoir tank to specified level.
4. Warm up engine to normal operating temperature without radia-
tor cap installed.
lIf coolant overflows radiator filler hol](/manual-img/5/57402/w960_57402-1041.png)
CO-32
[YD22DDTi]
ENGINE COOLANT
3. Fill reservoir tank to specified level.
4. Warm up engine to normal operating temperature without radia-
tor cap installed.
lIf coolant overflows radiator filler hole, install filler cap.
5. Run engine at 3,000 rpm for 10 seconds and return to idle speed
with radiator cap installed.
lRepeat two or three times.
Watch coolant temperature gauge so as not to overheat the
engine.
6. Stop engine and cool down to less than approximately
50°C(122°F).
lCool down using a fan to reduce the time.
lIf necessary, refill radiator up to filler neck with coolant.
7. Refill reservoir tank to MAX level line with coolant.
8. Repeat steps 5 through 7 two or more times with radiator cap installed until coolant level no longer drops.
9. Check cooling system for leaks with engine running.
10. Warm up engine, and check for sound of coolant flow while running engine from idle up to 3,000 rpm with
heater temperature controller set at several position between COOL and WARM.
lSound may be noticeable at heater unit.
11. If sound is heard, bleed air from cooling system by repeating steps 5 through 7 until coolant level no
longer drops.
lClean excess 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.
6. Repeat steps 1 through 5 until clear water begins to drain from radiator.
SMA412B
Page 1043 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual RADIATOR
CO-33
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
RADIATORPFP:21400
Removal and InstallationEBS00BB0
WA RN ING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from h NISSAN X-TRAIL 2003 Electronic Repair Manual RADIATOR
CO-33
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
RADIATORPFP:21400
Removal and InstallationEBS00BB0
WA RN ING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from h](/manual-img/5/57402/w960_57402-1042.png)
RADIATOR
CO-33
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
RADIATORPFP:21400
Removal and InstallationEBS00BB0
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. 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 engine coolant. Refer toCO-30, "DRAINING ENGINE COOLANT".
2. Remove under cover.
3. Disconnect radiator upper hose, lower hose, reservoir tank hose and mounting bracket.
4. 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 engine coolant leaks. Refer toCO-30, "LEAK CHECK".
SBIA0131E
1 Radiator 2 Bracket 3 Mounting rubber
4 Drain plug 5 Radiator hose (lower) 6 Radiator fan assembly
7 Reservoir tank 8 Radiator hose (upper) 9 Radiator Cap
Page 1044 of 3066
CO-34
[YD22DDTi]
RADIATOR
Disassembly and Assembly Radiator Fan
EBS00BB1
DISASSEMBLY
1. Remove radiator fan.
2. Remove insulator.
3. Remove fan motor from fan shroud.
ASSEMBLY
lInstall in the reverse order of removal.
Checking Radiator CapEBS00BB2
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
Page 1045 of 3066
![NISSAN X-TRAIL 2003 Electronic Repair Manual RADIATOR
CO-35
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
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 NISSAN X-TRAIL 2003 Electronic Repair Manual RADIATOR
CO-35
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
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](/manual-img/5/57402/w960_57402-1044.png)
RADIATOR
CO-35
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
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
Page 1046 of 3066
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
Page 1047 of 3066
RADIATOR (ALLUMINUM TYPE)
CO-37
[YD22DDTi]
C
D
E
F
G
H
I
J
K
L
MA
CO
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
Page 1048 of 3066
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