NISSAN TERRANO 2004 Service Repair Manual

Lubrication Circuit
ELC037
ENGINE LUBRICATION SYSTEMTD27Ti
LC-20
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Oil Pressure Check
WARNING:
IBe careful not to burn yourself, as the engine and oil may
be hot.
I Oil pressure check should be done in ªNeutralº gear posi-
tion.
1. Check oil level.
2. Remove oil pressure switch.
3. Install pressure gauge.
4. Start engine and warm it up to normal operating temperature.
5. Check oil pressure with engine running under no-load.
Engine rpm Approximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed More than 78 (0.78, 0.8, 11) 3,000 294 - 392 (2.94 - 3.92, 3.0 - 4.0, 43 - 57)
If difference is extreme, check oil passage and oil pump for oil
leaks.
6. Install oil pressure switch.
Use proper liquid sealant. Oil pressure switch:
:10-13N ×m (1.0 - 1.3 kg-m, 87 - 113 in-lb)
SLC964
SLC003A
ENGINE LUBRICATION SYSTEMTD27Ti
LC-21
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Oil Pump
OIL PUMP INSPECTION
1. Inspect pump body, gears and drive shaft for wear and dam-age.
2. Using a feeler gauge and fuse wire, check the following clear- ances.Gear side clearance: Less than 0.13 mm (0.0051 in)
Gear backlash: Less than 0.43 mm (0.0169 in)
3. Measure inside diameter ªAº of bushing. A: 13.012 - 13.098 mm (0.5123 - 0.5157 in)
MLC128A
SLC966
SLC967
SLC968
ENGINE LUBRICATION SYSTEMTD27Ti
LC-22
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4. Measure outside diameter ªBº of drive gear shaft.B: 12.974 - 12.992 mm (0.5108 - 0.5115 in)
5. Calculate oil pump bushing clearance. Oil pump bushing clearance (A þ B):Less than 0.15 mm (0.0059 in)
If it exceeds the limit replace oil pump bushing or entire oil
pump assembly.
SLC969
NLC057
ENGINE LUBRICATION SYSTEMTD27Ti
Oil Pump (Cont'd)
LC-23
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Oil Filter Bracket
q1O-ring
q
2Oil pump relief valve q
3Oil filter
q
4Oil filter bracket q
5Oil filter relief valve
q
6Protection shield
OIL PUMP RELIEF VALVE INSPECTION
1. Visually inspect components for wear and damage.
2. Coat relief valve with engine oil and check that it falls smoothly into the valve hole by its own weight.
If damaged, replace oil pump relief valve set.
OIL FILTER RELIEF VALVE INSPECTION
Inspect oil filter short valve for movement, cracks and breaks by
pushing the ball.
If damaged, replace oil filter bracket assembly.
NLC056
ENGINE LUBRICATION SYSTEMTD27Ti
LC-24
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Oil Cooler
q1Oil pressure switch
q
2Regulator valve q
3Oil cooler element
q
4Oil filter relief valve q
5O-ring
OIL COOLER RELIEF VALVE INSPECTION
Inspect oil cooler relief valve for movement, cracks and breaks by
pushing the ball.
If damaged, replace oil cooler relief valve set.
REGULATOR VALVE INSPECTION
1. Visually inspect components for wear and damage.
2. Coat regulator valve with engine oil and check that it falls
smoothly into the valve hole by its own weight.
If damaged, replace regulator valve set.
YLC067
ENGINE LUBRICATION SYSTEMTD27Ti
LC-25
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Oil Jet
INSPECTION (For gear train)
Make sure that the holes are not clogged. Clean them with a wire
if necessary.
Oil jet has to be installed with oil hole facing crank gear and
idler gear.
INSPECTION (For piston)
1. Blow through outlet of oil jet and make sure that air comes outof inlet.
2. Push cut-off valve of oil jet bolt with a clean resin or brass rod and make sure that cut-off valve moves smoothly with proper
repulsion.
When installing oil jet, align oil jet's boss with hole on cylin-
der block. Oil jet bolt:
:29-39N ×m
(3.0 - 4.0 kg-m, 22 - 29 ft-lb)
Dimension ªDº: 22 mm (0.87 in)
SLC974
SLC015
SLC975
SLC325A
ENGINE LUBRICATION SYSTEMTD27Ti
LC-26
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Cooling Circuit
NLC011
ENGINE COOLING SYSTEMTD27Ti
LC-27
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System Inspection
CHECKING HOSES
Check hoses for proper attachment, leaks, cracks, damage, loose
connections, chafing and deterioration.
CHECKING RADIATOR CAP
To check radiator cap, apply pressure to the cap with a cap tester.Radiator cap relief pressure:78-98kPa
(0.78 - 0.98 bar, 0.8 - 1.0 kg/cm
2, 11 - 14 psi)
CHECKING COOLING SYSTEM FOR LEAKS
Appear pressure to the cooling system by means of a tester to
check for leakage. Testing pressure:157 kPa (1.57 bar, 1.6 kg/cm
2, 23 psi)
CAUTION:
Higher than the specified pressure may cause radiator dam-
age.
SLC613
SMA990A
ENGINE COOLING SYSTEMTD27Ti
LC-28
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Water Pump
REMOVAL AND INSTALLATION
Drain coolant from drain plugs on cylinder block and radiator.Cylinder block drain plug:
(Use proper sealant)
:20-29N ×m (2.0 - 3.0 kg-m, 14 - 22 ft-lb)
CAUTION:
I When removing water pump assembly, be careful not to
spill 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.
NLC012
NLC058
ENGINE COOLING SYSTEMTD27Ti
LC-29
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