2004 ISUZU TF SERIES engine

6A-88 ENGINE MECHANICAL (C24SE)
SPECIAL SERVICE TOOLS
ITEM NO. ILLUSTRATION PART NO. PART NAME



5-8840-2634-0



Aligner



5-8840-2593-0


Cutter set



5-8840-2594-0


Spring Compressor



5-8840-0451-0


Installer



5-8840-0452-0


Remover / Installer



5-8840-2596-0


Distance Gauge



5-8840-0455-0


Assembly Sleeves


5-8840-2597-0

Installer



5-8840-0457-0


Remover / Installer



5-8840-0468-0


Remover / Installer

ENGINE MECHANICAL (C24SE) 6A-89
ITEM NO. ILLUSTRATION PART NO. PART NAME



5-8840-0459-0


Installer



5-8840-0460-0


Installer



5-8840-0446-0


Flywheel Holder


5-8840-2598-0

Holding Wrench


5-8840-2599-0

Reamer Set



5-8840-2600-0


Socket Wrench


5-8840-2601-0

Installer

6A-90 ENGINE MECHANICAL (C24SE)
MEMO

ENGINE COOLING 6B-1
SECTION 6B
ENGINE COOLING
CONTENTS
PAGE
General Description........................................................................................................ 6B- 2
Service Precaution......................................................................................................... 6B- 3
Diagnosis......................................................................................................................... 6B- 5
Draining and Refilling Cooling System ......................................................................... 6B- 6
Water Pump ..................................................................................................................... 6B- 7
Water Pump and Associated Parts ........................................................................... 6B- 7
Removal ...................................................................................................................... 6B- 7
Inspection ................................................................................................................... 6B- 7
Installation .................................................................................................................. 6B- 8
Thermostat ...................................................................................................................... 6B- 9
Removal ...................................................................................................................... 6B- 9
Inspection ................................................................................................................... 6B- 9
Installation .................................................................................................................. 6B- 9
Fan clutch with Cooling Fan .......................................................................................... 6B- 9
Inspection and Repair................................................................................................ 6B- 9
Radiator ........................................................................................................................... 6B-11
Radiator and Associated Parts ................................................................................. 6B-11
Removal ...................................................................................................................... 6B-11
Inspection ................................................................................................................... 6B-12
Installation .................................................................................................................. 6B-13
Main Data and Specifications ........................................................................................ 6B-13
Special Service Tool ....................................................................................................... 6B-14

6B-2 ENGINE COOLING
General Description
Legend
1 Water Pump
2 Thermostat
3 Radiator
4 Reserve Tank5 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.

ENGINE COOLING 6B-3


Service Precaution
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.


Water pump
The water pump is centrifugal type and is driven by timing belt.


Thermostat
The thermostat is a bypass type and is a wax pellet type with a
air hole.





110RS001
Radiator
The radiator is a flow type with corrugated fins.

6B-4 ENGINE COOLING

Antifreeze Solution

Calculating mixing ratio
Mixing ratio

= Antifreeze solution (Lit/gal.)
Antifreeze solution (Lit/gal.) + Water (Lit/gal.)

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

Total Cooling System Capacity
5.7Lit




Mixing ratio
Check the specific gravity of engine coolant in the cooling
system temperature ranges from 0C to 50C using a
suction type hydrometer, then determine the density of the
engine coolant by referring to the table.

NOTE: The LLC is 50% at all environment in order to prevent
the corrosion of cooling system parts.

ENGINE COOLING 6B-5
Diagnosis
Engine Cooling Trouble
Condition Possible cause Correction
Engine overheating Low Engine Coolant level Replenish
Thermo mater unit faulty Replace
Faulty thermostat Replace
Faulty Engine Coolant temperature
sensor Repair or replace
Clogged radiator Clean or replace
Faulty radiator cap Replace
Low engine oil level or use of
improper engine oil Replenish or change oil
Clogged exhaust system Clean exhaust system or replace
faulty parts
Faulty Throttle Position sensor Replace throttle valve assembly
Open or shorted Throttle Position
sensor circuit Repair or replace
Damaged cylinder head gasket Replace
Loosen V-belt tension Adjust belt tension or replace.
Collapsed hoses Replace
Faulty Fan clutch Replace
Engine overcooling Faulty thermostat Replace
Engine slow to warm-up Faulty thermostat Replace
Thermo unit faulty Replace