2002 NISSAN TERRANO Service Repair Manual

Oil Filter Bracket
q1O-ring
q
2Oil pump relief valveq
3Oil filter
q
4Oil filter bracketq
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

Oil Cooler
q1Oil pressure switch
q
2Regulator valveq
3Oil cooler element
q
4Oil filter relief valveq
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.
NLC055
ENGINE LUBRICATION SYSTEMTD27Ti
LC-25

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 out
of 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

Cooling Circuit
NLC011
ENGINE COOLING SYSTEMTD27Ti
LC-27

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

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:
IWhen removing water pump assembly, be careful not to
spill coolant on drive belt.
IWater pump cannot be disassembled and should be
replaced as a unit.
IAlways replace with new gasket.
IAfter installing water pump, connect hose and clamp
securely, then check for leaks using radiator cap tester.
NLC012
NLC058
ENGINE COOLING SYSTEMTD27Ti
LC-29

INSPECTION
1. Check for badly rusted or corroded body assembly and vane.
2. Check the water pump bushing for excessive end play and
irregular movement.
3. Check fan coupling for rough operation, oil leakage or bent
bimetal.
The water pump and fan coupling cannot be disassembled and
should be replaced as a unit.
SLC979
SLC244
SLC245
ENGINE COOLING SYSTEMTD27Ti
Water Pump (Cont'd)
LC-30

Thermostat
q1Water outlet
q
2Thermostat with jiggle valve
q
3Rubber sealq
4Water connector
q
5Thermostat housingq
6Engine coolant temperature sen-
sor
q
7Thermal transmitter
CAUTION:
IAfter installation, run engine for a few minutes, and check
for leaks.
IBe careful not to spill coolant over engine compartment.
Place a rag to absorb coolant.
INSPECTION
1. Check for valve seating condition at ordinary temperatures. It
should seat tightly.
2. Check valve opening temperature and maximum valve lift.
Standard type Optional type
Valve opening temperature ÉC (ÉF) 82 (180) 88 (190)
Max. valve lift
mm/ÉC (in/ÉF)8/95
(0.315/203)8/100
(0.315/212)
3. Then check if valve closes at 5ÉC (9ÉF) below valve opening
temperature.
NLC059
SLC343
ENGINE COOLING SYSTEMTD27Ti
LC-31