Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 1219

6A–73

ENGINE MECHANICAL (Y22SE 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 (Y22SE 2.2L)

RODEO

ENGINE

ENGINE COOLING (Y22SE 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–8

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Inspection

6B–9

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Installation

6B–10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Main Data and Specifications

6B–11

. . . . . . . . . . . . . 

Special Tool

6B–12

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

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.

SECTION

ENGINE COOLING (Y22SE 2.2L)

6B–2

General Description

111RW001

Legend

(1) Water Pump
(2) Thermostat
(3) Radiator
(4) Reservoir 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 (Y22SE 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

D

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.

D

Calculating mixing ratio

F06RW005

NOTE: Antifreeze solution + Water = Total cooling
system capacity.

D

Total Cooling System Capacity

6.9 Lit (7.3 US quarts) for M/T
7.0 Lit (7.4 US quarts) for A/T

111RW002

D

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.