2004 ISUZU TF SERIES Workshop Manual

TPMS key fob battery TPMS reset engine parking brake jump start

Page 1929 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE COOLING (6VE1 3.5L) 6B-5
Diagnosis
Engine Cooling Trouble
Symptom Possible Cause Action
Engine overheating Low Engine Coolant level Replenish
Thermo meter unit faulty Replace
Faulty

Page 1930 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6B-6 ENGINE COOLING (6VE1 3.5L)
Draining and Refilling Cooling
System
Before draining the cooling system, inspect the system
and perform any necessary service to ensure that it is
clean, does n

6B-6 ENGINE COOLING (6VE1 3.5L)
Draining and Refilling Cooling
System
Before draining the cooling system, inspect the system
and perform any necessary service to ensure that it is
clean, does not leak and is in proper working order.
The engine coolant (EC) level should be between the
“ MIN" and “MAX" lines of reserve tank when the engine
is cold. If low, check for leakage and add EC up to the
“ MAX" line.
There should not be any excessive deposit of rust o
r
scales around the radiator cap or radiator filler hole, and
the EC should also be free from oil.
Replace the EC if excessively dirty.
1. Completely drain the cooling system by opening the
drain plug at the bottom of the radiator.

P1010064
2. Remove the radiator cap.
WARNING: To avoid the danger of being burned, do
not remove the cap while the engine and radiato
r
are still hot. Scalding fluid and steam can be blown
out under pressure.
3. Disconnect all hoses from the EC reserve tank.
Scrub and clean the inside of the reserve tank with
soap and water. Flush it well with clean water, then
drain it. Install the reserve tank and hoses.
4. Refill the cooling system with the EC using a
solution that is 50 percent antifreeze.
Procedure for filling with coolant (in case of full change)
Make sure that the engine is cool.
Open radiator cap pour coolant up to filler neck.
Pour coolant into reservoir tank up to “MAX" line.

Tighten radiator cap and start the engine. Afte
r
idling for 2 to 3 minutes, stop the engine and reopen
radiator cap. If the water level is lower, replenish.
WARNING: When the coolant is heated to a high
temperature, be sure not to loosen or remove the
radiator cap. Otherwise you might get scalded by
not vapor or boiling water. To open the radiato
r
cap, put a piece of thick cloth on the cap and
loosen the cap slowly to reduce the pressure when
the coolant has become cooler.

After tightening radiator cap, warm up the engine at
about 2000 rpm. Set heater adjustment to the
highest temperature position, and let the coolan
t
circulate also into heater water system.
Check to see the thermostat has opened through
the needle position of water thermometer, conduct a
5 –minute idling again and stop the engine.
When the engine has been cooled, check filler neck
for water level and replenish if required. Should
extreme shortage of coolant is found, check the
cooling system and reservoir tank hose for leakage.
Pour coolant into the reservoir tank up to “MAX"
line.

Page 1931 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE COOLING (6VE1 3.5L) 6B-7
Water Pump
Water Pump and Associated Parts

030RS002
Legend
(1) Timing Belt (3) Water Pump Assembly
(2) Idle Pulley (4) Gasket

Removal
1. Disco

Page 1932 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6B-8 ENGINE COOLING (6VE1 3.5L)
NOTE: To prevent the oil leakage, apply the LOCTITE
262 or an equivalent, to the arrow marked fixing bol
t
thread.

030RW008
3. Idle pulley
Install idle pul

Page 1933 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE COOLING (6VE1 3.5L) 6B-9
Thermostat
Thermostat and Associated Parts

031RW001

Legend
(1) Thermostat Housing
(2) Thermostat
(3) Outlet Pipe

Removal
1. Disconnect battery grou

Page 1934 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6B-10 ENGINE COOLING (6VE1 3.5L)
Radiator
Radiator and Associated Parts

RTW36BLF000101
Legend (5) Bracket
(1) Radiator Hose (6) Reserve Tank Hose
(2) Drain Plug (7) Reserve Tank
(3)

Page 1935 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE COOLING (6VE1 3.5L) 6B-11
Removal
1. Disconnect battery ground cable.
2. Loosen a drain plug to drain EC.
3. Disconnect oil cooler hose on automatic transmission (A/T).
4. Disconnect

Page 1936 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6B-12 ENGINE COOLING (6VE1 3.5L)
Valve opening vacuum kPa (psi) 1.96
4.91 (0.28

0.71)

110RS006
Radiator Core
1. A bent fin may result in reduced ventilation and
overheating m

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