radiator ISUZU TF SERIES 2004 Manual PDF

6B-8 ENGINE COOLING











Crack in the water pump body

EC leakage from the seal unit

Play or abnormal noise in the bearing

Cracks or corrosion in the impeller
Installation
1. Before installing water pump, coat sealing surface with
silicon grease.
2. Install water pump assembly and tighten bolts to the
specified torque.
Torque: 25 N




m (2.5 kgf




m)
3. Timing belt

Install timing belt, refer to timing belt installation step in
"Timing Belt" in this manual.
4. Connect radiator hose and replenish EC.
5. Connect battery ground cable.

ENGINE COOLING 6B-9
Thermostat





























Removal
1. Disconnect battery ground cable.
2. Drain engine coolant from the radiator and engine.
3. Disconnect radiator hose from the inlet pipe.
4. Remove thermostat housing.
5. Remove thermostat from thermostat housing.
Inspection
Suspend the thermostat in a water-filled container using thin
wire. Place a thermometer next to the thermostat.
Do not directly heat the thermostat.
Gradually increase the water temperature. Stir the water so
that the entire water is same temperature.
Confirm the temperature when the valve first begins to open.
Valve opening temperature 92
 C (197.6
 F)
Confirm the temperature when the valve is fully opened.
Valve full open temperature 107
 C(224.6
 F)
Make necessary repair and parts replacement if extreme wear
or damage is found during inspection.
Installation
1. Before installing thermostat, coat sealing surface with
silicon grease.
2. Install O-ring.
3. Install thermostat housing and tighten bolts to the specified
torque.
Torque: 15 N




m (1.5 kgf




m)
4. Installation rubber hose.
5. Replenish engine coolant (EC).
6. Start engine and check for EC leakage.













Fan Clutch with Cooling Fan
Inspection and Repair
Make necessary correction or parts replacement if wear,
damage or any other abnormal condition are found through
inspection.

Visually inspect for damage, leak (silicon grease) or other
abnormal conditions.
1. Inspection (on-vehicle)
1) Turn the fan clutch by hand when in a low temperature
condition before starting the engine, and confirm that it
can be turned readily.
2) Start the engine to warm it up until the temperature at the
fan clutch portion gets to around 80C. Then stop the
engine and confirm that the fan clutch can be turned with
considerable effort (clutch torque) when turned by hand.

ENGINE COOLING 6B-11
Radiator
Radiator and Associated Parts



Legend
1 Radiator Hose
2 Drain Plug
3 Fan Guide, Lower
4 Fan Guide
5 Bracket 6 Reserve Tank Hose
7 Reserve Tank
8 Radiator Cap
9 Radiator Assembly


Removal
1. Disconnect battery ground cable.
2. Loosen a drain plug to drain engine coolant (EC).
3. Disconnect radiator inlet hose and outlet hose.
4. Disconnect the reserve tank hose from radiator.
5. Lift out the radiator assembly, taking care not to damage
the radiator core.

6B-12 ENGINE COOLING


Inspection
Radiator Cap
Measure the valve opening pressure of the pressurizing valve
with a radiator filler cap tester.
Replace the cap if the valve opening pressure is outside the
standard range.
Valve opening pressure kPa (psi) 88.3 – 103.0
(13.5 – 15.7)
Cap tester: 5-8840-0277-0
Adapter: 5-8840-2603-0
Check the condition of the vacuum valve in the center of the
valve seat side of the cap. If considerable rust or dirt is found,
or if the valve seat cannot be moved by hand, clean or replace
the cap.
Valve opening vacuum kPa (psi) 1.9 - 4.9
(0.28 - 0.71)



Radiator Core
1. A bent fin may result in reduced ventilation and overheating
may occur. All bent fins must be straightened. Pay close
attention to the base of the fin when it is being straightened.
2. Remove all dust, bugs and other foreign material.
Flushing the Radiator
Thoroughly wash the inside of the radiator and the engine
coolant passages with cold water and mild detergent. Remove
all sign of scale and rust.
Cooling System Leakage Check
Use a radiator cap tester to force air into the radiator through
the filler neck at the specified pressure of 196 kPa (28.5 psi)
with a cap tester:

Leakage from the radiator

Leakage from the coolant pump

Leakage from the water hoses

Check the rubber hoses for swelling.
Cap tester: 5-8840-0277-0
Adapter: 5-8840-2603-0

ENGINE COOLING 6B-13

Installation
1. Install radiator assembly, taking care not to damage the
radiator core.
2. Install the radiator assembly.
3. Connect reserve tank hose.
4. Connect radiator inlet hose and outlet hose.
5. Pour engine coolant up to filler neck of radiator, and up to
MAX mark of reserve tank.
Important operation (in case of 100% engine coolan
t
change) procedure for filling with engine coolant.

Remove radiator cap.

Fill with engine coolant (EC) to the radiator filler neck.

Fill with EC to the "MAX" line on the reservoir tank.

Start the engine with the radiator cap removed and bring to
operating temperature by running engine at 2,500 - 3,000
rpm for 30 minutes.

By EC temperature gauge reading make sure that the
thermostat is open.

If air bubbles come up to the radiator filler neck, replenish
with EC. Repeat until the EC level does not drop any further.
Install the radiator cap and stop the engine.

Replenish EC to the "MAX" line on the reservoir tank and
leave as it is until the engine gets cool.


After the engine gets cool, start the engine and make sure
there is no water running noise heard from the heater core
while the engine runs at 3000 rpm.

Should water running noise be heard, repeat the same
procedure from the beginning.


Main Data and Specifications
General Specifications
Cooling system Engine Coolant forced circulation
Radiator Tube type corrugated (2 tube in row)
Heat radiation capacity 66.3 kcal/h
Heat radiation area 7.08 m2
Radiator front area 028 m2
Radiator dry (weight) 3.1 kg
Radiator cap valve opening pressure 93.3 – 122.7 kpa
Engine coolant capacity 2.0L
Engine coolant pump Centrifugal type
Thermostat Bypass type
Engine coolant total capacity 5.7lit

6B-14 ENGINE COOLING
SPECIAL SERVICE TOOL
ITEM NO. ILLUSTRATION PART NO. PART NAME


1

5-8840-0277-0


Tester; radiator cap


2

5-8840-2603-0

Adapter; radiator cap

6E–254 ENGINE DRIVEABILITY AND EMISSIONS
DETONATION/SPARK KNOCK SYMPTOM
DEFINITIONS: A mild to severe ping, usually worse under acceleration. The engine makes a sharp metallic knocking
sound that changes with throttle opening. Prolonged detonation may lead to complete engine tailure.
Step Action Value(s) Yes No
1Was the “On-Board Diagnostic (OBD) System Check”
performed?—Go to Step 2Go to OBD
System Check
2 1. Perform a bulletin search.
2. If a bulletin that addresses the symptom is found,
correct the condition as instructed in the bulletin.
Was a bulletin found that addresses the symptom?—Verify repair Go to Step 3
3 Was a visual/physical check performed?
—Go to Step 4Go to Visual /
physical Check.
4 1. If Tech 2 readings are normal (refer to Typical
Scan Data Values) and there are no engine
mechanical faults, fill the fuel tank with a known
quality gasoline.
2. Re-evaluate the vehicle performance.
Is detonation present?—Go to Step 5Verify repair
5 1. Check for obvious overheating problems:
Low engine coolant
Restricted air flow to radiator
Incorrect coolant solution
2. If a problem is found, repair as necessary.
Was a problem found?—Verify repair Go to Step 6
6 Check the fuel pressure. Refer to 6E-108 page “Fuel
System Diagnosis” .
Was a problem found?—Verify repair Go to Step 7
7 1. Using a Tech 2, display the MAP sensor value in
comparison with atmosphere temperature.
2. Check for a faulty, plugged, or incorrectly installed
MAP sensor.
Was the problem found?—Verify repair Go to Step 8
8 1. Using a Tech 2, display the ECT sensor and IAT
sensor value and warm up condition compared
with the typical data.
2. Check the specified value or wire.
Was the problem found?—Verify repair Go to Step 9
9 Observe the throttle position display on the Tech 2
while slowly increasing throttle pedal.
Does the throttle position increase steady with
increasing smoothly?
—Go to Step 10Refer to
Diagnostic
Trouble Code
P0123 for
further
diagnosis
10 Check the knock sensor wire, shield wire, or
installation condition.
Was a problem found?—Verify repair Go to Step 11
11 Check items that can cause the engine to run lean.
Refer to DTC P1171 “Fuel Supply System Lean
During Power Enrichment”.
Was a problem found?—Verify repair Go to Step 12

2A-2 FRAME AND BUMPER
FRONT BUMPER
REMOVAL AND INSTALLATION


RTW42ALF000101

Removal Steps



1. Radiator grille


2. Front bumper fascia

3. Bezel (W/O Fog light)

4. Fog light

5. Front bumper flare assembly (W/ Front
wheel extention)

6. Front bumper inpact support assembly

7. Front bumper inpact bar assembly
(Except Europe equipment)
8. Front bumper inpact bar assembly (For
Europe equipment)

9. Fascia support side bracket

10. Fascia support lower bracket

Installation Steps

10. Fascia support lower bracket

9. Fascia support side bracket


8. Front bumper inpact bar assembly (For
Europe equipment)


7. Front bumper inpact bar assembly
(Except Europe equipment)

6. Front bumper inpact support assembly


5. Front bumper flare assembly (W/ Front
wheel extention)



4. Fog light

3. Bezel (W/O Fog light)

2. Front bumper fascia

1. Radiator grille

FRAME AND BUMPER 2A-3



Important Operations - Removal
1. Radiator Grille

Refer to the Radiator Grille in this section.



2. Front Bumper Fascia



Remove the nine clips and four screws.


Disconnect the fog light harness connectors.


Important Operations - Installation






8. Front Bumper Inpact Bar Assembly (For Europe
equipment)
7. Front Bumper Inpact Bar Assembly (Except Europe
equipment)
Tighten the fixing bolts to the specified torque.

Torque N
m(kgf
m/lb
ft)
62 (6.3
/ 46)
This illustration is except Europe equipment model.




5. Front Bumper Flare Assembly
Tighten the fixing nuts to the specified torque.

Torque N
m(kgf
m/lb
in)
7 (0.7
/ 61)






4. Fog Light
Tighten the fixing nuts to the specified torque.

Torque N
m(kgf
m/lb
in)
7 (0.7
/ 61)

SHEET METAL 2B-1

SECTION 2B
SHEET METAL

This section includes items of front end sheet metal that are attached by bolts, screws or clips and related
accessory components.
Anticorrosion materials have been applied to the interior surfaces of some metal panels to provide rust resistance.
When servicing these panes, areas on which this material has been disturbed, should be properly recoated with
service-type anticorrosion material.
TABLE OF CONTENTS
PAGE
Engine Hood Assembly ..................................................................................................... 2B- 2
Engine Hood Lock ............................................................................................................. 2B- 5
Front Fender Panel ............................................................................................................ 2B- 7
Radiator Grille .................................................................................................................... 2B- 10
Rear Body ........................................................................................................................... 2B- 11
Body Mounting ................................................................................................................... 2B- 13
Body Dimension.................................................................................................................2B- 19