Isuzu KB P190. Service manual — part 795

Engine Cooling – V6 Engine

Page 6B1–45

3.11 Coolant Outlet Housing

Remove

Refer to 3.1 Service Notes in this Section, for
important safety items.

1

Allow engine to cool to ambient temperature (less than 50

° C), and then remove the coolant filler cap (located at

the front left-hand side of the engine).

Disconnection of the battery affects certain
vehicle electronic systems. Refer to 1.1

WARNING, CAUTION and NOTES, before

removing the ground lead.

2

Disconnect the battery ground lead. Refer to 8A – Electrical Body & Chassis Battery.

3

Drain the coolant from the system. Refer to 3.3 Draining and Filling Cooling System.

4

Remove the complete intake manifold assembly. Refer to 6A1 Engine Mechanical.

Always wear protective safety glasses when
working with spring type hose clamps. Failure
to do so could result in eye injury.

5

Remove upper radiator hose clamp (1) at the
coolant outlet housing connection (2), disconnect
hose from coolant outlet.

Figure 6B1 – 50

Engine Cooling – V6 Engine

Page 6B1–46

6

Remove the two coolant outlet housing attaching
bolts (1), and remove coolant outlet housing (2).

7

Remove and discard coolant outlet housing
O-ring (3) and seal (4).

Figure 6B1 – 51

Reinstall

1

Ensure that the coolant outlet housing and front outlet mating surfaces are clean and dry.

2

Install new O-ring and seal to coolant outlet housing.

3

Install coolant outlet housing and attaching bolts. Tighten all bolts to the correct torque specification.

Coolant outlet housing to front
outlet bolt torque specification. . . . . . . ..10 N.m

Always wear protective safety glasses when
working with spring type hose clamps. Failure
to do so could result in eye injury.

4

Connect the upper radiator hose and clamp to the coolant outlet housing connection.

5

Close the radiator drain tap on the lower RHS of the radiator and remove the piece of rubber tubing to the tap outlet.

6

Reinstall the intake manifold assembly. Refer to 6A1 Engine Mechanical.

7

Refill cooling system. Refer to 3.3 Draining and Filling Cooling System in this Section.

8

Check for coolant leaks. Refer to 3.7 Pressure Testing in this Section.

9

Reconnect battery ground lead. Refer to 8A – Electrical Body & Chassis.

3.12 Coolant Inlet Pipe

Remove

Refer to 3.1 Service Notes in this Section, for
important safety items.

1

Allow engine to cool to ambient temperature (less than 50

° C), and then remove the coolant filler cap (located at

the front left-hand side of the engine).

Engine Cooling – V6 Engine

Page 6B1–47

Disconnection of the battery affects certain
vehicle electronic systems. Refer to 1.1

WARNING, CAUTION and NOTES, before

removing the ground lead.

2

Disconnect the battery ground lead. Refer to 8A – Electrical Body & Chassis.

Refer to ‘

‘

‘

‘ Environmental Issues ’

’

’

’ in 3.1

Service Notes, before draining the coolant.

3

Draining the coolant from the system. Refer to 3.3 Draining and Filling Cooling System in this Section.

4

Raise the front of the vehicle and support on safety stands. Refer to 0A General Information for the location of
jacking and support points.

Always wear protective safety glasses when
working with spring type hose clamps.
Failure to do so could result in eye injury.

5

Remove lower radiator outlet hose clamp (1) at the
coolant inlet pipe connection, then disconnect the
hose from coolant inlet pipe (2).

6

Remove the coolant inlet pipe from the engine block
by removing the attaching bolt (3).

Figure 6B1 –

––

– 52

7

Remove the coolant inlet pipe (1) to thermostat
housing (2) attaching bolt (3).

8

Remove the coolant inlet pipe by manoeuvring the
pipe to the front of the vehicle and withdrawing the
pipe from below the vehicle, between the cross
member and radiator.

9

Remove and discard coolant inlet pipe O-ring (4) from
the thermostat end of the coolant inlet pipe.

Figure 6B1 –

––

– 53

Engine Cooling – V6 Engine

Page 6B1–48

Install

1

Ensure that the coolant inlet pipe and thermostat housing mating surfaces are clean and dry.

2

Install new O-ring to the coolant inlet pipe.

3

Install coolant inlet pipe at the thermostat housing and secure with the attaching bolt. Tighten all bolts to the correct
torque specification.

Coolant inlet pipe to thermostat
housing bolt torque specification. . . . . . ..23 N.m

4

Raise the front of the vehicle and support on safety stands. Refer to 0A General Information for the location of
jacking and support points.

5

Reinstall the coolant inlet pipe to the engine block and secure with the bolt tightened to the correct torque
specification.

Coolant inlet pipe to engine block bolt
torque specification . . . . . . . . . . . .25 N.m

Always wear protective safety glasses when
working with spring type hose clamps. Failure
to do so could result in eye injury.

6

Connect the lower radiator outlet hose and clamp to the coolant inlet pipe connection.

7

Close the radiator drain tap on the lower RHS of the radiator and remove the piece of rubber tubing to the tap outlet.

8

Lower the front of the vehicle.

9

Refill cooling system. Refer to 3.3 Draining and Filling Cooling System in this Section.

10

Check for coolant leaks. Refer to 3.7 Pressure Testing in this Section.

11

Reconnect battery ground lead. Refer to 8A – Electrical Body & Chassis.

3.13 Cooling Fan and Shroud Assembly

Remove

Disconnection of the battery affects certain
vehicle electronic systems. Refer to 1.1

WARNING, CAUTION and NOTES, before

removing the ground lead.

1

Disconnect the battery ground lead. Refer to 8A – Electrical Body & Chassis.

2

Remove the intake duct and mass air flow as an assembly. Refer to 6A1 Engine Mechanical.

3

Remove the coolant recovery hose from the fan shroud retaining clip.