1998 NISSAN PICK-UP belt

CHECKING COOLING SYSTEM FOR LEAKS
To check for leakage, apply pressure to the cooling system with
a tester.
Testing pressure:
157 kPa (1.57 bar, 1.6 kg/cm
2, 23 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
78-98kPa
(0.78 - 0.98 bar, 0.8 - 1.0 kg/cm
2, 11 - 14 psi)
Limit
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.
Water Pump
CAUTION:
lWhen removing water pump assembly, be careful not to
get coolant on drive belts.
lWater pump cannot be disassembled and should be
replaced as a unit.
lAfter installing water pump, connect hose and clamp
securely, then check for leaks using radiator cap tester.
REMOVAL
1. Drain coolant from radiator and cylinder block.
Refer to MA section (``Changing Engine Coolant'', ``ENGINE
MAINTENANCE'').
2. Remove power steering pump drive belt, generator drive belt
and A/C compressor drive belt.
3. Remove fan coupling with fan.
4. Remove water pump.
SLC134B
SLC135B
SMA967B
ALC060
ENGINE COOLING SYSTEMKA
System Check (Cont'd)
LC-7

INSPECTION
lCheck body assembly for rust or corrosion.
lCheck for rough operation due to excessive end play.
INSTALLATION
1. Use a scraper to remove liquid gasket from water pump.
lAlso remove traces of liquid gasket from mating surface
of cylinder block.
2. Apply a continuous bead of liquid gasket to mating surface
of water pump.
lUse Genuine Liquid Gasket or equivalent.
When filling radiator with coolant, refer to MA section
(``Changing Engine Coolant'', ``ENGINE MAINTENANCE'').
When installing drive belts, refer to MA section (``Checking
Drive Belts'').
Thermostat
lBe careful not to spill coolant over engine compartment.
Use a rag to absorb coolant.
REMOVAL
1. Drain coolant form engine. Refer to MA section (``Changing
Engine Coolant'', ``ENGINE MAINTENANCE'').
2. Remove air cleaner and air duct assembly.
3. Remove water hose from water inlet housing.
4. Remove water inlet housing, then take out thermostat.
INSPECTION
1. Check valve seating condition at normal room temperatures.
It should seat tightly.
2. Check valve opening temperature and valve lift.
Valve opening temperature ÉC (ÉF) 76.5 (170)
Valve lift mm/ÉC (in/ÉF) More than 8/90 (0.31/194)
3. Then check if valve closes at 5ÉC (9ÉF) below valve opening
temperature.
SLC738
SLC188A
SLC391AA
ALC061
SLC343
ENGINE COOLING SYSTEMKA
Water Pump (Cont'd)
LC-8

Cooling Fan (Crankshaft driven)
REMOVAL AND INSTALLATION
lDo not release the drive belt tension by removing the fan/
water pump pulley.
lFan coupling cannot be disassembled and should be
replaced as a unit. If front mark
VFis present, install fan so
that side marked
VFfaces the front.
lInstall the drive belt only after the fan and fan coupling to
water pump flange bolts/nuts have been properly torqued.
lProper 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.
SLC227B
SLC224B
ENGINE COOLING SYSTEMKA
Radiator (Cont'd)
LC-10

INSPECTION
Check fan coupling for rough operation, wobbling, oil leakage or
bent bimetal.
After assembly, verify the fan does not wobble or flap while the
engine is running.
WARNING:
lWhen the engine is running, keep hands and clothing
away from moving parts such as drive belts and fan.
Refilling engine coolant
For details on refilling engine coolant, refer to MA section
(``Changing Engine Coolant'', ``ENGINE MAINTENANCE'').
SLC072
SLC151B
ENGINE COOLING SYSTEMKA
Cooling Fan (Crankshaft driven) (Cont'd)
LC-11

Water Pump and Cooling Fan (Camshaft
driven)
REMOVAL AND INSTALLATION
Drain coolant from drain plugs on cylinder block and radiator.
Cylinder block drain plug
(Use proper sealant):
:20-29Nzm (2.0 - 3.0 kg-m, 14 - 22 ft-lb)
CAUTION:
lWhen removing water pump assembly, be careful not to
get coolant on drive belt.
lWater pump cannot be disassembled and should be
replaced as a unit.
lAlways replace with new gasket.
lAfter assembly, verify the fan does not wobble or flap
while the engine is running.
lAfter installing water pump, connect hose and clamp
securely, then check for leaks using radiator cap tester.
WARNING:
When the engine is running, keep hands and clothing away
from moving parts such as drive belts and fan.
SMA617C
SLC978-A
ENGINE COOLING SYSTEMTD
LC-21

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

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