cooling NISSAN TERRANO 2004 Service Owner's Manual

ENGINE LUBRICATION &COOLING SYSTEMS
SECTION
LC
CONTENTS
ZD
PRECAUTIONS AND PREPARATION ............................2
Liquid Gasket Application Procedure ..........................2
Special Service Tools ..................................................2
ENGINE LUBRICATION SYSTEM ..................................3
Lubricating Circuit ........................................................3
Oil Pressure Check......................................................4
Oil Pump ......................................................................5
Oil Jet........................................................................\
...7
Oil Cooler .....................................................................8
ENGINE COOLING SYSTEM ..........................................9
Cooling Circuit .............................................................9
System Check............................................................10
Water Pump ............................................................... 11
Thermostat .................................................................12
Water Outlet ...............................................................13
Radiator .....................................................................14
Cooling Fan (Crankshaft driven) ...............................15
EGR Cooler ...............................................................16
SERVICE DATA AND SPECIFICATIONS (SDS) ..........17
Engine Lubrication System ........................................17
Engine Cooling System .............................................17 TD27TiPREPARATION
..............................................................18
PRECAUTION ................................................................19
ENGINE LUBRICATION SYSTEM ................................20
Lubrication Circuit ......................................................20
Oil Pressure Check....................................................21
Oil Pump ....................................................................22
Oil Filter Bracket ........................................................24
Oil Cooler ...................................................................25
Oil Jet........................................................................\
.26
ENGINE COOLING SYSTEM ........................................27
Cooling Circuit ...........................................................27
System Inspection .....................................................28
Water Pump ...............................................................29
Thermostat .................................................................31
Radiator .....................................................................32
Cooling Fan ...............................................................33
SERVICE DATA AND SPECIFICATIONS (SDS) ..........34
Engine Lubrication System ........................................34
Engine Cooling System .............................................34
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Cooling Circuit
YLC064
ENGINE COOLING SYSTEMZD
LC-9
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System Check
WARNING:
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.
CHECKING COOLING SYSTEM HOSES
Check hoses for the following:
IImproper attachment
I Leaks
I Cracks
I Damage
I Chafing
I Deterioration
CHECKING COOLING SYSTEM FOR LEAKS
To check for leakage, apply pressure to the cooling system with a
tester.
Testing pressure:157 kPa (1.57 bar, 1.6 kg/cm
2, 23 psi)
CAUTION:
Higher pressure than specified may cause radiator damage.
CHECKING RADIATOR CAP
To check radiator cap, apply pressure to cap with a tester. Radiator cap relief pressure:Standard78-98kPa
(0.78 - 0.98 bar, 0.8 - 1.0 kg/cm
2, 11 - 14 psi)
Pull the negative pressure valve to open it.
Check that it closes completely when released.
SLC134B
SLC135B
SMA967B
ENGINE COOLING SYSTEMZD
LC-10
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Water Pump
CAUTION:
IWhen removing water pump assembly, be careful not to
get coolant on drive belt.
I Water pump cannot be disassembled and should be
replaced as a unit.
I Always replace with new gasket.
I After installing water pump, connect hose and clamp
securely, then check for leaks using radiator cap tester.
Refer to MA section.
REMOVAL AND INSTALLATION
1. Drain coolant from radiator and cylinder block.
Refer to MA section (ªChanging Engine Coolantº, ªENGINE
MAINTENANCEº).
2. Remove radiator upper hose.
3. Remove radiator shroud.
4. Remove cooling fan.
5. Remove drive belt. Refer to MA section, ªChecking Drive Beltº.
6. Remove insulator.
7. Remove vacuum pipe.
8. Remove TDC sensor. Refer to EM section, ªTDC sensor removal and installationº in ªTIMING GEARº.
9. Remove fan coupling with water pump.
10. Install in the reverse order of removal.
JLC373B
ENGINE COOLING SYSTEMZD
LC-11
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INSPECTION
1. Check for badly rusted or corroded body assembly and vane.
2. Check for rough operation due to excessive end play.
CAUTION:
Do not disassemble water pump coupling assembly.
Thermostat
SLC374B
YLC032
ENGINE COOLING SYSTEMZD
Water Pump (Cont'd)LC-12
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REMOVAL AND INSTALLATION
1. Drain engine coolant. Refer to MA section, ªChanging EngineCoolantº.
2. Remove left side battery. (If so equipped)
3. Remove radiator upper hose.
4. Remove radiator shroud.
5. Remove intake air duct, inlet pipe.
6. Remove harness and connectors.
7. Install in reverse order of removal.
I After installation, run engine for a few minutes and check
for leaks.
I Be careful not to spill coolant in engine compartment. Use
a rag to absorb coolant.
INSPECTION
1. Check valve seating condition at ordinary temperatures. It
should seat tightly.
2. Check valve opening temperature and maximum valve lift.
Valve opening temperature ÉC (ÉF) 82 (180)
Maximum valve lift mm/ÉC (in/ÉF) 10/95 (0.39/203)
3. Then check if valve closes at 5ÉC (9ÉF) below valve opening
temperature.
Water Outlet
INSPECTION
Visual inspection for water leaks. If there is leakage, replace gas-
ket.
JLC384B
SLC695A
YLC033
ENGINE COOLING SYSTEMZD
Thermostat (Cont'd)
LC-13
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Radiator
YLC065
ENGINE COOLING SYSTEMZD
LC-14
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REMOVAL AND INSTALLATION
1. Remove under cover.
2. Drain engine coolant. Refer to MA section, ªChanging EngineCoolantº.
3. Remove air cleaner case, air duct and resonator.
4. Remove battery (right side).
5. Remove radiator shroud (lower).
6. Remove radiator shroud (front).
7. Disconnect radiator hose (upper and lower).
8. Disconnect reservoir tank hose.
9. Disconnect A/T oil cooler hose (Only A/T models).
10. Remove radiator.
11. After repairing or replacing radiator, install all removed parts in reverse order of removal.
Cooling Fan (Crankshaft driven)
DISASSEMBLY AND INSTALLATION
IDo not release the drive belt tension by removing the fan/water
pump pulley.
I Fan coupling cannot be disassembled and should be replaced
as a unit. If front mark q
Fis present, install fan so that side
marked q
Ffaces the front.
I Proper alignment of these components is essential. Improper
alignment will cause them to wobble and may eventually cause
the fan to separate from the water pump causing extensive
damage.
JLC379B
ENGINE COOLING SYSTEMZD
Radiator (Cont'd)
LC-15
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EGR Cooler
q1EGR tube assembly
q
2Gasket
q
3EGR cooler bracket
q
4Water hose
q
5Clamp q
6Water hose
q
7Clamp
q
8Water hose
q
9Clamp q
10EGR tube
q
11Gasket
q
12EGR cooler bracket
q
13EGR cooler
YLC066
ENGINE COOLING SYSTEMZD
LC-16
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Engine Lubrication System
Oil pressure check
Engine speedrpm Approximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed 130 - 140 (1.3 - 1.4, 1.33 - 1.43, 18.9 - 20.3)
2,000 290 - 300 (2.9 - 3.0, 2.96 - 3.06, 42.1 - 43.5)
4,000 450 (4.5, 4.59, 65.3)
Oil pump
Unit: mm (in)
Body to outer gear radial clearance q10.114 - 0.200
(0.0045 - 0.0079)
Inner gear to outer gear tip clearance q
2Less than 0.180 (0.0071)
Body to inner gear axial clearance q
30.05 - 0.09
(0.0020 - 0.0035)
Body to outer gear axial clearance q
40.050 - 0.105
(0.0020 - 0.0041)
Inner gear to brazed portion of housing
clearance q
50.045 - 0.091
(0.0018 - 0.0036)
Regulator valve to oil pump cover clear-
ance q
60.040 - 0.097
(0.0016 - 0.0038)
Engine Cooling System
Radiator
Unit: kPa (bar, kg/cm2, psi)
Cap relief pressure 108 - 128
(1.08 - 1.28, 1.1 - 1.3, 16 - 18)
Leakage test pressure 157 (1.57, 1.6, 23)
Thermostat
Valve opening temperature ÉC (ÉF) 82 (180)
Valve lift mm/ÉC (in/ÉF) More than 10/95 (0.39/203)
SERVICE DATA AND SPECIFICATIONS (SDS)ZD
LC-17
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