Isuzu Rodeo UE. Manual — part 146
6A–73
ENGINE MECHANICAL (X22SE 2.2L)
Special Tools
ILLUSTRATION
TOOL NO.
TOOL NAME
J–42613
Installer; Rear
crankshaft seal ring
J–42609
Remover/Installer;
Crankshaft carrier seal
J–8062
Compressor; Valve
spring
(Use with J–3289–20
base)
J–43037
Locking tool camshaft
gear
J–42616
Installer; Rear
crankshaft seal
J–42618
Locking device;
Flywheel
ILLUSTRATION
TOOL NO.
TOOL NAME
J–42619
Adapter; Valve spring
J–42622
Installer sleeve; Valve
stem seal
J–42623
Socket wrench; Cylinder
head bolt
J–42620
Holding wrench; Driven
gear fix
6B–1
ENGINE COOLING (X22SE 2.2L)
RODEO
ENGINE
ENGINE COOLING (X22SE 2.2L)
CONTENTS
Service Precaution
6B–1
. . . . . . . . . . . . . . . . . . . . . .
General Description
6B–2
. . . . . . . . . . . . . . . . . . . . .
Diagnosis
6B–4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Draining and Refilling Cooling System
6B–4
. . . . .
Water Pump
6B–5
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Pump and Associated Parts
6B–5
. . . . . . .
Removal
6B–5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection
6B–5
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
6B–5
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat
6B–6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal
6B–6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection
6B–6
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
6B–6
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator
6B–7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Radiator and Associated Parts
6B–7
. . . . . . . . . .
Removal
6B–7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection
6B–8
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation
6B–8
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Data and Specifications
6B–9
. . . . . . . . . . . . .
Special Tool
6B–9
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Precaution
WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.
CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.
ENGINE COOLING (X22SE 2.2L)
6B–2
General Description
111RW001
Legend
(1) Water Pump
(2) Thermostat
(3) Radiator
(4) Reserve Tank
(5) Coolant Distributor
(6) Cylinder Block and Head
(7) Throttle Body
(8) Heater
The Cooling System is a pressurized type, where the
water pump, which is cambelt driven, forces the
circulation of the coolant through the cylinder block and
head. The thermostat regulates the flow of coolant
between the radiator and the bypass circuit. The heater is
part of the bypass circuit. The throttle body pre–heat is a
separate circuit which is not regulated by the thermostat.
An oil cooler may be fitted as part of this circuit.
Water Pump
The water pump is centrifugal type and is driven by timing
belt.
030RW003
6B–3
ENGINE COOLING (X22SE 2.2L)
Thermostat
The thermostat is a bypass type and is a wax pellet type
with a air hole (1).
031RW003
Radiator
The radiator is a flow type with corrugated fins.
110RX005
Antifreeze Solution
f
Relation between Mixing ratio and Freezing
temperature of the engine coolant varies with the ratio
of antifreeze solution in water. Proper mixing ratio can
be determined by referring to the chart. Supplemental
inhibitors or additives claiming to increase cooling
capability that have not been specifically approved by
Isuzu are not recommended for addition to the cooling
system.
f
Calculating mixing ratio
F06RW005
NOTE: Antifreeze solution + Water = Total cooling
system capacity.
f
Total Cooling System Capacity
7.2Lit (1.90US gal)
111RW002
f
Mixing ratio
Check the specific gravity of engine coolant in the
cooling system temperature ranges from 0
°
C to 50
°
C
using a suction type hydrometer, then determine the
density of the engine coolant by referring to the table.
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