2000 NISSAN PATROL check engine

OIL PRESSURE RELIEF VALVE AND BYPASS VALVE
INSPECTION (For oil cooler)
1. 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 suitable tool.
Install a new valve in place by tapping it.
2. Check oil pressure relief valve to oil cooler housing clear-
ance.
Clearance:
VC: 0.032 - 0.068 mm (0.0013 - 0.0027 in)
If it exceeds the limit, replace oil cooler housing.
Oil Jet
INSPECTION (For timing chain)
Make sure that the holes are not clogged. Clean them with a wire
if necessary.
Drive oil jet into place after positioning alignment mark on.
INSPECTION (For piston)
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.
When installing oil jet, align oil jet's boss with hole on cyl-
inder block.
Oil jet:
:30-39Nzm (3.0 - 4.0 kg-m, 22 - 28 ft-lb)
SLC371B
SLC385B
FEM124
FEM125
ENGINE LUBRICATION SYSTEMZD
Oil Pump (Cont'd)
LC-1006

OIL FILTER
The oil filter is an element type. Refer to ªChanging Oil Filterº in
MA section.
Oil Cooler
REMOVAL AND INSTALLATION
1. Drain engine oil and coolant.
Remove catalyst and turbocharger. Refer to ªCATALYST
AND TURBOCHARGERº in EM section.
2. Remove bolts A to C then remove oil cooler assembly.
+Do not remove ªDº nuts when removing oil cooler
assembly.
Bolt length:
A: 20 mm (0.79 in)
B: 45 mm (1.77 in)
C: 65 mm (2.56 in)
3. Installation is in reverse order of removal.
+Do not spill coolant on the drive belt.
INSPECTION
1. Check oil cooler for cracks.
2. Check oil cooler for clogging by blowing through coolant inlet.
If necessary, replace oil cooler assembly.
JLC370B
JLC381B
ENGINE LUBRICATION SYSTEMZD
Oil Jet (Cont'd)
LC-1007

System Check
WARNING:
Never remove the radiator cap when the engine is hot. Seri-
ous 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:
+Improper attachment
+Leaks
+Cracks
+Damage
+Chafing
+Deterioration
CHECKING COOLING SYSTEM FOR LEAKS
To check for leakage, apply pressure to the cooling system with
a tester.
Testing pressure:
98 kPa (0.98 bar, 1.0 kg/cm
2, 14 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:
Standard
59-98kPa
(0.59 - 0.98 bar, 0.6 - 1.0 kg/cm
2,9-14psi)
Pull the negative pressure valve to open it.
Check that it closes completely when released.
SLC134B
SLC135B
SMA967B
ENGINE COOLING SYSTEMZD
LC-1009

Water Pump
CAUTION:
+When removing water pump assembly, be careful not to
get coolant on drive belt.
+Water pump cannot be disassembled and should be
replaced as a unit.
+Always replace with new gasket.
+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 TDC sensor removal and
installation in ªTIMING GEARº.
9. Remove fan coupling with water pump.
10. Install in the reverse order of removal.
JLC373B
ENGINE COOLING SYSTEMZD
LC-1010

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
REMOVAL AND INSTALLATION
1. Drain engine coolant. Refer to MA section, ªChanging Engine
Coolantº.
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.
+After installation, run engine for a few minutes and
check for leaks.
+Be careful not to spill coolant in engine compartment.
Use a rag to absorb coolant.
SLC374B
JLC380B
JLC384B
ENGINE COOLING SYSTEMZD
Water Pump (Cont'd)
LC-1011

INSPECTION
1. Check valve seating condition at ordinary temperatures. It
should seat tightly.
2. Check valve opening temperature and maximum valve lift.
Tropical type and
Gulf standard
modelStandard type
and Australia
modelFrigid type
Valve opening tem-
perature ÉC (ÉF)76.5 (170) 82 (180) 88 (190)
Maximum valve lift
mm/ÉC (in/ÉF)10/90 (0.39/194) 10/95 (0.39/203) 10/100 (0.39/212)
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
gasket.
SLC695A
SLC377B
ENGINE COOLING SYSTEMZD
Thermostat (Cont'd)
LC-1012

Engine Lubrication System
Oil pressure check
Engine speed
rpmApproximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed More than 147 (1.47, 1.5, 21)
2,000 More than 539 (5.39, 5.5, 78)
4,000 More than 736 (7.36, 7.5, 107)
Oil pump
Unit: mm (in)
Body to outer gear radial clearanceV10.114 - 0.200
(0.0045 - 0.0079)
Inner gear to outer gear tip clearance
V2Less than 0.180 (0.0071)
Body to inner gear axial clearance
V30.05 - 0.09
(0.0020 - 0.0035)
Body to outer gear axial clearance
V40.050 - 0.105
(0.0020 - 0.0041)
Inner gear to brazed portion of housing
clearance
V50.045 - 0.091
(0.0018 - 0.0036)
Regulator valve to oil pump cover clear-
ance
V60.040 - 0.097
(0.0016 - 0.0038)
Engine Cooling System
Radiator
Unit: 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)
Thermostat
Tropical type Standard type
Valve opening tem-
perature ÉC (ÉF)76.5 (170) 82 (180)
Valve lift
mm/ÉC (in/ÉF)More than 10/95
(0.39/203)More than 10/95
(0.39/203)
SERVICE DATA AND SPECIFICATIONS (SDS)ZD
LC-1015

MAINTENANCE
SECTION
MA
MODIFICATION NOTICE:
+ The ZD30DDTi engine has been replaced with the RD28ETi engine.
+ Descriptions for the engine coolant mixture ratio have been modified.
CONTENTS
PERIODIC MAINTENANCE ................................ 1002
Maintenance Schedule for Diesel Engines
(Annual Mileage < 30,000 km/year) ................ 1002
Chassis and Body Maintenance ...................... 1003
Maintenance Under Severe Driving Conditions
(Annual Driving Distance < 30,000 km/year)... 1004
Maintenance Schedule for Diesel Engines
(Annual Mileage > 30,000 km/year) ................ 1005
Chassis and Body Maintenance ...................... 1006
Maintenance Under Severe Driving Conditions
(AnnualDrivingDistance>30,000km/year)...1007
RECOMMENDED FLUIDS AND
LUBRICANTS ...................................................... 1008
Fluids and Lubricants....................................... 1008
SAE Viscosity Number..................................... 1009
Engine Coolant Mixture Ratio .......................... 1010
ZD
ENGINE MAINTENANCE .................................... 1011
Checking Tightening Torque............................ 1011 Adjusting Intake and Exhaust Valve
Clearance ......................................................... 1011
Checking Drive Belt ......................................... 1011
Removal ........................................................... 1012
Installation ........................................................ 1012
Changing Engine Oil ........................................ 1012
Changing Engine Oil Filter............................... 1013
Changing Engine Coolant ................................ 1014
Checking Cooling System................................ 1016
Checking and Replacing Fuel Filter and
Draining Water ................................................. 1017
Checking Fuel Lines ........................................ 1018
Cleaning and Replacing Air Cleaner Filter ...... 1019
CHASSIS AND BODY MAINTENANCE ............. 1020
Checking A/T Fluid .......................................... 1020
Changing A/T Fluid .......................................... 1021
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................... 1022
Engine Maintenance (ZD) ................................ 1022

MA