1998 NISSAN PICK-UP Repair Manual

lInstall the drive plate on the drive shaft, together with the
original shim(s). Press the drive plate down by hand.
lUsing the holder to prevent drive plate rotation, tighten the
bolt to 12 to 14 Nzm (1.2 to 1.4 kg-m, 9 to 10 ft-lb) torque.
After tightening the bolt, check that the pulley rotates
smoothly.
lCheck clearance around the entire periphery of clutch disc.
Disc-to-pulley clearance:
0.3 - 0.6 mm (0.012 - 0.024 in)
If the specified clearance is not obtained, replace adjusting
shim and readjust.
BREAK-IN OPERATION
When replacing compressor clutch assembly, always conduct
the break-in operation. This is done by engaging and disengag-
ing the clutch about thirty times. Break-in operation raises the
level of transmitted torque.
SHA798E
SHA799E
SHA052F
SERVICE PROCEDURES
Compressor Clutch Ð DKS-17CH
(ZEXEL make) (Cont'd)
HA-66

General Specifications
COMPRESSOR
Model ZEXEL make DKV-14C
Type Vane rotary
Displacement cm
3(cu in)/rev. 140 (8.54)
Direction of rotationClockwise
(Viewed from drive end)
Drive belt A Type
LUBRICANT
Model ZEXEL make DKV-14C
Type KLH00-PAGR0
Capacity m!(lmp fl oz)
Total in system 200 (7.0)
Compressor (Service parts)
charging amount200 (7.0)
Inspection and Adjustment
REFRIGERANT
Type HFC-134a (R-134a)
Capacity kg (lb)0.60 - 0.70
(1.32 - 1.54)
ENGINE IDLING SPEED (When A/C is ON.)
lRefer to EC section.
BELT TENSION
lRefer to MA section (``Checking Drive
Belts'', ``ENGINE MAINTENANCE'').
COMPRESSOR
Model DKS-17CH DKV-14C
Clutch disc-to-pulley
clearance mm (in)0.3 - 0.6
(0.012 - 0.024)0.3 - 0.6
(0.012 - 0.024)
SERVICE DATA AND SPECIFICATIONS (SDS)
HA-67

ENGINE LUBRICATION &
COOLING SYSTEMS
SECTION
LC
CONTENTS
PRECAUTIONS AND PREPARATION..................... 1
Liquid Gasket Application Procedure .................... 1
Special Service Tools ............................................ 2
KA
ENGINE LUBRICATION SYSTEM............................ 3
Lubrication Circuit .................................................. 3
Oil Pressure Check ................................................ 4
Oil Pump ................................................................ 4
ENGINE COOLING SYSTEM.................................... 6
Cooling Circuit........................................................ 6
System Check ........................................................ 6
Water Pump ........................................................... 7
Thermostat ............................................................. 8
Radiator.................................................................. 9
Cooling Fan (Crankshaft driven).......................... 10
TD
ENGINE LUBRICATION SYSTEM.......................... 12
Lubrication Circuit ................................................ 12
Oil Pressure Check (On-vehicle service) ............ 13
Oil Pump .............................................................. 14
Oil Filter Bracket .................................................. 16
Oil Cooler ............................................................. 17Oil Jet ................................................................... 18
ENGINE COOLING SYSTEM.................................. 19
Cooling Circuit...................................................... 19
Cooling System Inspection .................................. 20
Water Pump and Cooling Fan (Camshaft
driven) .................................................................. 21
Thermostat ........................................................... 23
Radiator................................................................ 24
Refilling Engine Coolant ...................................... 24
ENGINE ROOM FAN MOTOR ELECTRICAL
CIRCUIT................................................................... 25
Wiring Diagram .................................................... 25
Cooling Fan (Motor driven) .................................. 26
Electrical Components Inspection ....................... 26
ENGINE COOLING SYSTEM.................................. 28
Radiator (Aluminum type) .................................... 28
Overheating Cause Analysis ............................... 31
SERVICE DATA AND SPECIFICATIONS (SDS)... 32
Engine Lubrication System (KA).......................... 32
Engine Cooling System (KA) ............................... 32
Engine Lubrication System (TD).......................... 32
Engine Cooling System (TD) ............................... 32
LC

Liquid Gasket Application Procedure
a. Use a scraper to remove all traces of old liquid gasket from
mating surfaces and grooves. Also, completely clean any oil
from these areas.
b. Apply a continuous bead of liquid gasket to mating surfaces.
(Use Genuine Liquid Gasket or equivalent.)
lFor oil pan, be sure liquid gasket diameter is 3.5 to 4.5 mm
(0.138 to 0.177 in) for gasoline engines.
lFor areas except oil pan, be sure liquid gasket diameter is
2.0 to 3.0 mm (0.079 to 0.118 in) for gasoline engines, and
2.5 to 3.5 mm (0.098 to 0.138 in) for diesel engines.
c. Apply liquid gasket around the inner side of bolt holes (unless
otherwise specified).
d. Assembly should be done within 5 minutes after coating.
e. Wait at least 30 minutes before refilling engine oil and engine
coolant.
SEM164F
AEM080
PRECAUTIONS AND PREPARATION
LC-1

Special Service Tools*: Special tool or commercial equivalent
Tool number
Tool nameDescriptionEngine application
KA TD
ST25051001*
Oil pressure gauge
NT558
Measuring oil pres-
sure
Maximum measur-
ing range: 2,452
kPa (24.5 bar, 25
kg/cm
2, 356 psi)XX
ST25052000*
Hose
NT559
Adapting oil pres-
sure gauge
to cylinder block
XX
EG17650301
Radiator cap tester
adapter
NT564
Adapting radiator
cap tester
to radiator filler
neck
XX
a: 28 (1.10) dia.
b: 31.4 (1.236) dia.
c: 41.3 (1.626) dia.
Unit: mm (in)
KV99103510
Radiator plate pliers A
NT224
Installing radiator
upper and lower
tanks
XX
KV99103520
Radiator plate pliers B
NT225
Removing radiator
upper and lower
tanks
XX
WS39930000
Tube presser
NT052
Pressing the tube
of liquid gasket
XX
KV10105901
Oil filter cap wrench
NT689
Removing oil filter
XÐ
KV10106001
Oil filter wrench
NT690
Replacing oil filter
ÐX
PRECAUTIONS AND PREPARATION
LC-2

Lubrication Circuit
SLC150B
ENGINE LUBRICATION SYSTEMKA
LC-3

Oil Pressure Check
WARNING:
lBe careful not to burn yourself, as the engine and oil
may be hot.
lPut gearshift lever in Neutral N position.
1. Check oil level.
2. Remove oil pressure switch.
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 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)
lIf difference is extreme, check oil passage and oil pump
for oil leaks.
6. Install oil pressure switch with sealant.
Oil Pump
SLC183A
SLC770A
SLC229B
ENGINE LUBRICATION SYSTEMKA
LC-4

lAlways replace with new oil seal and gasket.
lWhen removing oil pump, turn crankshaft so that No. 1
piston is at TDC on its compression stroke.
lWhen installing oil pump, apply engine oil to gears, then
align punchmark on drive spindle and oil hole on oil
pump.
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. Check that it falls
smoothly into the valve hole by its own weight.
lReplace regulator valve set or oil pump assembly, if
damaged.
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 suitable tool.
Install a new valve by tapping it in place.
OIL PUMP INSPECTION
Using a feeler gauge, check the following clearance.
Standard clearance:
Unit: mm (in)
Rotor tip clearanceV1Less than 0.12 (0.0047)
Outer rotor to body radial clearance
V20.15 - 0.21 (0.0059 - 0.0083)
Side clearance (with gasket)
V30.04 - 0.08 (0.0016 - 0.0031)
lIf the tip clearance (V1) exceeds the limit, replace rotor
set.
lIf body to rotor clearances (V2,V3) exceed the limit,
replace oil pump assembly.
SLC133B
ALC058
SLC185A
SLC026
SLC732
ENGINE LUBRICATION SYSTEMKA
Oil Pump (Cont'd)
LC-5