1998 NISSAN PICK-UP engine

Radiator (Aluminum type)
PREPARATION
1. Attach the spacer to the tip of the radiator plate pliers A.
Spacer specification: 1.5 mm (0.059 in) thick x 18 mm (0.71
in) wide x 8.5 mm (0.335 in) long.
2. Make sure that when radiator plate pliers A are closed
dimension H¢¢is approx. 7.6 mm (0.299 in).
3. Adjust dimension H¢¢with the spacer, if necessary.
lIf the radiator core rims cannot be crimped as specified,
further modification of the radiator plate pliers A is
required. Refer to the Technical Bulletin LC 91-001.
DISASSEMBLY
1. Remove tank with Tool.
lGrip the crimped edge and bend it upwards so that Tool slips
off.
Do not bend excessively.
SLC142B
SLC655C
SLC903
SLC893
ENGINE COOLING SYSTEM
LC-28

lIn 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.
ASSEMBLY
1. Clean contact portion of tank.
2. Install sealing rubber.
Push it in with fingers.
Be careful not to twist sealing rubber.
3. Caulk tank in specified sequence with Tool.
SLC930
SLC931
SLC932
SLC917A
SLC904
ENGINE COOLING SYSTEM
Radiator (Aluminum type) (Cont'd)
LC-29

lUse pliers in the locations where Tool cannot be used.
4. Make sure that the rim is completely crimped down.
Standard height ``H'':
8.0 - 8.4 mm (0.315 - 0.331 in)
5. Confirm that there is no leakage.
Refer to Inspection.
INSPECTION
1. Apply pressure with Tool.
Specified pressure value:
157 kPa (1.57 bar, 1.6 kg/cm
2, 23 psi)
WARNING:
To prevent the risk of the hose coming undone while under
pressure, securely fasten it down with a hose clamp.
2. Check for leakage.
SLC896
SLC897
SLC554A
SLC933
SLC934
ENGINE COOLING SYSTEM
Radiator (Aluminum type) (Cont'd)
LC-30

Overheating Cause Analysis
Symptom Check items
Cooling
system parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
Ð Thermostat stuck closed Ð
Damaged finsDust contamination or paper
clogging
Mechanical damage
Clogged radiator cooling tubeExcess foreign material (rust,
dirt, sand, etc.)
Reduced air flowCooling fan does not operate
ÐÐ Fan coupling does not operate
High resistance to fan rotation
Damaged fan blades
Damaged radiator shroud Ð Ð Ð
Improper coolant mixture ratio Ð Ð Ð
Poor coolant quality Ð Ð Ð
Insufficient coolantCoolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deteriora-
tion or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into cooling
systemCylinder head deterioration
Cylinder head gasket deteriora-
tion
Except
cooling
system parts
malfunctionÐ Overload on engineAbusive drivingHigh engine rpm under no load
Driving in low gear for extended
time
Driving at extremely high speed
Powertrain system malfunction
Ð Installed improper size wheels
and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air flowBlocked bumper Ð
Ð Blocked radiator grilleInstalled car brassiere
Mud contamination or paper
clogging
Blocked radiator Ð
Blocked condenser
Ð
Installed large fog lamp
ENGINE COOLING SYSTEM
LC-31

Engine Lubrication System (KA)
Oil pressure check
Engine speed
rpmApproximate discharge pressure
kPa (bar, kg/cm2, psi)
Idle speed More than 78 (0.78, 0.8, 11)
3,000 412 - 481 (4.12 - 4.81, 4.2 - 4.9, 60 - 70)
Oil pump inspection
Unit: mm (in)
Rotor tip clearance Less than 0.12 (0.0047)
Outer rotor to body radial
clearance0.15 - 0.21 (0.0059 - 0.0083)
Side clearance (with gasket) 0.04 - 0.08 (0.0016 - 0.0031)
Engine Cooling System (KA)
Thermostat
Valve opening temperature ÉC (ÉF) 76.5 (170)
Valve lift mm/ÉC (in/ÉF) More than 8/90 (0.31/194)
Radiator
Unit: kPa (bar, kg/cm2, psi)
Cap relief
pressureStandard78-98
(0.78 - 0.98, 0.8 - 1.0, 11 - 14)
Limit59-98
(0.59 - 0.98, 0.6 - 1.0,9-14)
Leakage test pressure 157 (1.57, 1.6, 23)
Engine Lubrication System (TD)
Oil pressure check
Engine speed
rpmApproximate 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)
Oil pump inspection
Unit: mm (in)
Gear side clearance Less than 0.13 (0.0051)
Gear backlash Less than 0.43 (0.0169)
Oil pump bushing clearance Less than 0.15 (0.0059)
Oil pump bushing inside diameter13.012 - 13.106
(0.5123 - 0.5160)
Drive gear shaft outside diameter12.974 - 12.992
(0.5108 - 0.5115)
Engine Cooling System (TD)
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 8/90
(0.31/194)More than 8/95
(0.31/203)
SERVICE DATA AND SPECIFICATIONS (SDS)
LC-32

MAINTENANCE
SECTION
MA
CONTENTS
PRECAUTIONS AND PREPARATION..................... 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (4WD models).............................................. 1
Supplemental Restraint System (SRS) ``AIR
BAG'' (2WD models).............................................. 1
Special Service Tools ............................................ 2
Commercial Service Tools ..................................... 2
PRE-DELIVERY INSPECTION ITEMS...................... 3
GENERAL MAINTENANCE...................................... 4
PERIODIC MAINTENANCE...................................... 5
Basic Schedule for Gasoline Engine Models ........ 5
Basic Schedule for Diesel Engine Models ............ 8
Maintenance Under Severe Driving Conditions .. 10
RECOMMENDED FLUIDS AND LUBRICANTS..... 12
Fluids and Lubricants........................................... 12
SAE Viscosity Number......................................... 13
Anti-freeze Coolant Mixture Ratio........................ 14
KA
ENGINE MAINTENANCE........................................ 15
Checking Drive Belts ........................................... 15
Changing Engine Coolant .................................... 16
Checking Cooling System.................................... 17
Checking Fuel Lines ............................................ 18
Changing Fuel Filter ............................................ 18
Changing Air Cleaner Filter (Viscous paper
type) ..................................................................... 19
Changing Engine Oil ............................................ 19
Changing Oil Filter ............................................... 20
Checking and Changing Spark Plugs.................. 20
Checking Ignition Wires ....................................... 21Checking Positive Crankcase Ventilation
(PCV) System ...................................................... 21
Changing Positive Crankcase Ventilation
(PCV) Filter .......................................................... 21
Checking Vacuum Hoses and Connections ........ 22
Checking Vapor Lines.......................................... 22
Checking Heated Oxygen Sensor ....................... 22
TD
ENGINE MAINTENANCE........................................ 23
Checking Manifold Tightening Torque ................. 23
Adjusting Intake and Exhaust Valve Clearance .. 23
Checking Drive Belt ............................................. 23
Changing Engine Oil ............................................ 24
Changing Engine Oil Filter................................... 24
Changing Engine Coolant .................................... 25
Checking Cooling System.................................... 26
Checking and Replacing Fuel Filter and
Draining Water ..................................................... 27
Checking Fuel Lines ............................................ 28
Cleaning and Replacing Air Cleaner Filter .......... 29
Checking Injection Nozzle ................................... 29
Checking Idle Speed............................................ 30
CHASSIS AND BODY MAINTENANCE................. 32
Checking Exhaust System ................................... 32
Checking Clutch Fluid Level and Leaks .............. 32
Checking Clutch System...................................... 32
Checking M/T Oil ................................................. 32
Changing M/T Oil ................................................. 32
Checking Water Entry - For 4WD models ........... 33
MA

Checking Transfer Fluid....................................... 33
Changing Transfer Fluid ...................................... 33
Checking Propeller Shaft ..................................... 33
Greasing Propeller Shaft ..................................... 33
Checking Differential Gear Oil ............................. 34
Changing Differential Gear Oil............................. 34
Balancing Wheels ................................................ 34
Tire Rotation ........................................................ 35
Checking Brake Fluid Level and Leaks ............... 35
Checking Brake System ...................................... 35
Changing Brake Fluid .......................................... 35
Checking Brake Booster, Vacuum Hoses,
Connections and Check Valve ............................ 36Checking Disc Brake ........................................... 36
Checking Drum Brake.......................................... 36
Checking Steering Gear and Linkage ................. 37
Checking Power Steering Fluid and Lines .......... 37
Checking Steering Gear Oil Level and Leaks ..... 38
Lubricating Hood Latches, Locks and Hinges ..... 39
Checking Seat Belts, Buckles, Retractors,
Anchors and Adjusters......................................... 40
Checking Body Corrosion .................................... 41
SERVICE DATA AND SPECIFICATIONS (SDS)... 42
Engine Maintenance (KA) .................................... 42
Engine Maintenance (TD) .................................... 42
Chassis and Body Maintenance .......................... 42

Special Service Tools
Tool number
Tool nameDescriptionEngine application
KA TD
KV10106001
Oil filter wrenchRemoving oil
filter
ÐX
NT690
KV10105901
Oil filter cap wrench
NT689
XÐ
EG17650301
Radiator cap tester
adapter
NT564
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)XX
KV10113600
Fuel filter wrench
NT553
Removing fuel
filter
ÐX
a: Max. 100 mm
(3.94 in) dia.
Commercial Service Tools
Tool name DescriptionEngine application
KA TD
Spark plug wrench
NT047
Wrench with a
magnet to hold
spark plug
XÐ
PRECAUTIONS AND PREPARATION
MA-2