1998 NISSAN PATROL Engine oil

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

+In areas where Tool cannot be used, use a screwdriver to bend
the edge up.
Be careful not to damage tank.
2. Make sure the edge stands straight up.
3. Remove oil cooler from tank. (A/T model only)
ASSEMBLY
1. Install oil cooler.
Pay attention to direction of conical washer.
2. Clean contact portion of tank.
3. Install sealing rubber.
Push it in with ®ngers.
Be careful not to twist sealing rubber.
SLC908A
SLC931
SLC894
SLC932
SLC917A
ENGINE COOLING SYSTEM
Radiator (Aluminum type) (Cont'd)
LC-17

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