check oil NISSAN PATROL 1998 Y61 / 5.G Engine Lubrication And Cooling System Workshop Manual

ENGINE LUBRICATION &
COOLING SYSTEMS
SECTION
LC
CONTENTS
PRECAUTIONS AND PREPARATION............................1
Liquid Gasket Application Procedure ..........................1
Special Service Tools ..................................................2
ENGINE LUBRICATION SYSTEM..................................3
Lubrication Circuit ........................................................3
Oil Pressure Check......................................................3
Oil Pump ......................................................................4
Oil Cooler .....................................................................7
Oil Jet...........................................................................7
Turbocharger ...............................................................8
ENGINE COOLING SYSTEM..........................................9
Cooling Circuit .............................................................9System Check..............................................................9
Water Pump ...............................................................10
Thermostat .................................................................12
Radiator .....................................................................14
Re®lling Engine Coolant ............................................14
Cooling Fan (Crankshaft driven) ...............................15
Cooling Fan (Motor driven)........................................15
Radiator (Aluminum type) ..........................................16
Overheating Cause Analysis .....................................20
SERVICE DATA AND SPECIFICATIONS (SDS)..........21
Engine Lubrication System ........................................21
Engine Cooling System .............................................21
LC

Lubrication Circuit
Oil Pressure Check
WARNING:
+Be careful not to burn yourself, as the engine and oil may
be hot.
+Oil pressure check should be done in ``Neutral'' gear posi-
tion.
1. Check oil level.
2. Remove oil pressure switch.
SLC201B
SLC694A
SLC194B
ENGINE LUBRICATION SYSTEM
LC-3

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
rpmApproximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed
3,000More than 78 (0.78, 0.8, 11)
318.7 - 424.6
(3.19 - 4.25, 3.25 - 4.33, 46.2 - 61.6)
If difference is extreme, check oil passage and oil pump for oil
leaks.
6. Install oil pressure switch with sealant.
Use proper liquid sealant.
Oil pressure switch:
:10-16Nzm (1.0 - 1.6 kg-m, 87 - 139 in-lb)
Oil Pump
REMOVAL AND INSTALLATION
1. Disconnect battery terminal.
2. Drain engine oil.
3. Drain coolant from radiator and cylinder block. Refer to MA
section (``Changing Engine Coolant'', ``ENGINE MAINTE-
NANCE'').
4. Remove radiator shroud.
5. Remove drive belts. Refer to MA section (``Checking Drive
Belts'').
6. Remove crankshaft pulley and front upper and lower belt cov-
ers. Refer to EM section (``TIMING BELT'').
7. Remove oil pan. Refer to EM section (``OIL PAN'').
8. Remove oil strainer.
9. Remove oil pump assembly.
10. Installation is in reverse order of removal.
+Before installing oil pump, remove liquid gasket from mating
surface of oil pump using a scraper.
Be sure liquid gasket in grooves is also removed.
+Remove liquid gasket from mating surface of cylinder block.
+Clean all traces of liquid gasket using white gasoline.
SLC993
ENGINE LUBRICATION SYSTEM
Oil Pressure Check (Cont'd)
LC-4

REGULATOR VALVE INSPECTION
1. Visually inspect components for wear and damage.
2. Check oil pressure regulator valve sliding surface and valve
spring.
3. Coat regulator valve with engine oil and check to make sure
that it falls smoothly into the valve hole by its own weight.
If damaged, replace regulator valve set or oil pump assembly.
OIL PRESSURE RELIEF VALVE INSPECTION
Inspect oil pressure relief valve for movement, cracks and breaks
by pushing the ball. If replacement is necessary, remove valve by
prying it out with a screwdriver.
Install a new valve in place by tapping it.
SLC195B
SLC295
SLC994
ENGINE LUBRICATION SYSTEM
Oil Pump (Cont'd)
LC-5

OIL PUMP INSPECTION
Using a feeler gauge, check the following clearance.
Unit: mm (in)
Body to outer gear clearanceV10.11 - 0.20 (0.0043 - 0.0079)
Inner gear to crescent clearance
V20.216 - 0.326 (0.0085 - 0.0128)
Outer gear to crescent clearance
V30.21 - 0.32 (0.0083 - 0.0126)
Housing to inner gear clearance
V40.05 - 0.09 (0.0020 - 0.0035)
Housing to outer gear clearance
V50.05 - 0.11 (0.0020 - 0.0043)
Inner gear to brazed portion of housing
clearance
V6=Aþ B0.106 - 0.152 (0.0042 - 0.0060)
If it exceeds the limit, replace gear set or entire oil pump
assembly.
SLC779
SLC780
SLC015A
SLC016A
ENGINE LUBRICATION SYSTEM
Oil Pump (Cont'd)
LC-6

Oil Cooler
REMOVAL AND INSTALLATION
Install oil cooler as shown in the ®gure.
INSPECTION
1. Check oil cooler element and bracket for cracks.
2. Check coolant inlet of oil cooler for clogging by blowing through
it. Replace it if necessary.
Oil Jet
INSPECTION
1. 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.
2. Make sure that the oil jet passage is not clogged. Clean with a
wire if necessary.
SLC196B
SLC015
ENGINE LUBRICATION SYSTEM
LC-7

When installing oil jet, align oil jet's boss with hole on cylin-
der block.
Oil jet bolt:
:30-40Nzm (3.1 - 4.1 kg-m, 22 - 30 ft-lb)
Turbocharger
+Before removing water tube, drain coolant ®rst.
+Be careful not to deform tubes.
+After installation, run engine for a few minutes, and check
for oil leakage.
SLC975
SLC197B
ENGINE LUBRICATION SYSTEM
Oil Jet (Cont'd)
LC-8

Cooling Fan (Crankshaft driven)
DISASSEMBLY AND INSTALLATION
+Do not release the drive belt tension by removing the fan/water
pump pulley.
+Fan coupling cannot be disassembled and should be replaced
as a unit. If front markj
Fis present, install fan so that side
markedj
Ffaces the front.
+Install the drive belt only after the fan and fan coupling to water
pump ¯ange bolts/nuts have been properly torqued.
+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.
INSPECTION
Check fan coupling for damage, oil leakage and bent bimetal.
Cooling Fan (Motor driven)
Cooling fan is controlled by ECM. For details, refer to ``Cooling
Fan'', ``TROUBLE DIAGNOSIS FOR DTC 28'' in EC section.
SLC176B
SLC072
SLC177B
ENGINE COOLING SYSTEM
LC-15

INSPECTION
1. Apply pressure with Tool.
Speci®ed pressure value:
98 kPa (0.98 bar, 1.0 kg/cm
2, 14 psi)
WARNING:
To prevent the risk of the hose coming undone while under
pressure, securely fasten it down with a hose clamp.
Attach a hose to the oil cooler as well.
2. Check for leakage.
SLC933
SLC934
ENGINE COOLING SYSTEM
Radiator (Aluminum type) (Cont'd)
LC-19

Engine Lubrication System
Oil pressure check
Engine
rpmApproximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed
3,000More than 78 (0.78, 0.8, 11)
318.7 - 424.6
(3.19 - 4.25, 3.25 - 4.33, 46.2 - 61.6)
Oil pumpUnit: mm (in)
Body to outer gear clearance
V10.11 - 0.20 (0.0043 - 0.0079)
Inner gear to crescent
clearance
V20.216 - 0.326 (0.0085 - 0.0128)
Outer gear to crescent
clearance
V30.21 - 0.32 (0.0083 - 0.0126)
Housing to inner gear
clearance
V40.05 - 0.09 (0.0020 - 0.0035)
Housing to outer gear
clearance
V50.05 - 0.11 (0.0020 - 0.0043)
Inner gear to brazed portion
of housing clearance
V60.106 - 0.152 (0.0042 - 0.0060)
Engine Cooling System
Thermostat
Valve opening temperature CÉ (ÉF) 82.0 (180)
Maximum valve lift mm/ÉC (in/ÉF) 10/95 (0.39/203)
RadiatorUnit: kPa (bar, kg/cm2, psi)
Cap relief pressure78-98
(0.78 - 0.98, 0.8 - 1.0, 11 - 14)
Leakage test pressure 157 (1.57, 1.6, 23)
SERVICE DATA AND SPECIFICATIONS (SDS)
LC-21