Iveco EuroCargo (12 to 26 t). Manual

70226

70154

70227

70363

70230

Figure 119

Figure 120

Figure 121

Figure 122

Figure 123

Fit the plate (1), the rose pipe (2) and tighten the fastening
screws (3) to the specified torque.

Set the gasket (1) on the oil sump (2).

Fit the oil sump (1) and apply the plate (3) to it.
Tighten the screws (2) to the specified torque.

Fit the phonic wheel (1) and the hub (2) on the output shaft.

Tighten the fastening screws (3) in two stages:

- 1

stage, tightening to 50

± 5 Nm torque with

dynamometric wrench;

- 2

stage, tightening to 90

° angle.

Fit a new sealing ring on the speed sensor (3).

Fit the speed sensor (3) on the front cover (1) and tighten the
screw (2) to the specified torque.

If not faulty the gasket can be reused.

Fit the damper flywheel (5) and the pulley (6).

Tighten the fastening screws (7) to 68

± 7 Nm torque.

Tightening to angle is performed using tool 99395216
(4).

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12-26 t

ENGINE F4 AE 0481

Base - February 2003

70231

70232

70234

70139

70235

Figure 124

Figure 125

Figure 126

Figure 127

Figure 128

Lubricate the sealing ring (2) with engine oil and set it on the
oil filter (3).

Screw manually to seat the oil filter (3) on the support
connection (1) and then screw again the oil filter (3) by

¾ turn.

Apply a new sealing ring on the oil temperature/pressure
sensor (4) and fit it on the support (1).

Tighten the screws (5) to the specified torque.

Fit a new sealing ring (6) in the engine block seat.

Position the alternator support (1) so that pins (3 and 4) are
set against the engine block.

Tighten the screws (2) to the specified torque.

Refit the alternator (1).

Tighten the screw (2) to the specified torque.

Refit the automatic belt tensioner (2).
Tighten the screw (3) to the specified torque using the proper
wrench, turn the automatic belt tensioner (2) to fit the belt (1)
on pulleys and guide rollers.

Fit on the engine block: a new gasket (1), the heat exchanger
(2) a new gasket (3) and the oil filter support (4).

Tighten the screws (5) to the specified torque.

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12-26 t

ENGINE F4 AE 0481

Base - February 2003

70145

70143

70144

70320

70319

Figure 129

Figure 130

Figure 131

Figure 132

Figure 133

Refit the high pressure pump (5) including the feed pump (6)
and tighten the nuts (3) to the specified torque. Fit the support
(4) with a new sealing ring, the timing sensor (2) with a new
sealing ring and tighten the relevant fastening nut (1) to the
specified torque.

Refit the air compressor (3). Tighten the screws (2) and the
nuts (1 and 4) to the specified torque.

Refit the hydraulic power steering pump (2) including the oil
tank (4) to the air compressor (5).
Use wrench 99355019 to tighten the fastening screws (3) to
the specified torque.

Refit the ECU (3) including the heat exchanger to the engine
block and tighten the screws (2) to the specified torque.

Intake (1) and exhaust (2) valves have heads with the same
diameter.

The central notch (

→) of the exhaust valve (2) head

distinguishes it from the intake valve.

Should cylinder head valves be not replaced, number
them before removing in order to refit them in the
same position.

A = intake side — S = exhaust side

Replace support elastic elements (1).

540610

CYLINDER HEAD

540662

Removing the valves

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12-26 t

ENGINE F4 AE 0481

Base - February 2003

Valve removal shall be performed using tool 99360268 (1)
and pressing the cap (3) so that when compressing the
springs (4) the cotters (2) can be removed. Then remove the
cap (3) and the springs (4).

Repeat this operation for all the valves.

Overturn the cylinder head and withdraw the valves (5).

70321

70322

70323

70324

Figure 134

Figure 135

Figure 136

Figure 137

Remove the sealing rings (1 and 2) from the relevant valve
guides.

This check shall be performed using the proper tools.

Use a pump to fill with water heated to approx. 90

°C and 2

— 3 bar pressure.

Replace the cup plugs (1) if leaks are found, use the proper
beater for their removal/refitting.

Replace the cylinder head if leaks are found.

Use a rule (2) and a feeler gauge (3) to check the cylinder
head (1) supporting surface.

Distortion found along the whole cylinder head shall not
exceed 0.20 mm.

If higher values are found grind the cylinder head according
to values and indications shown in the following figure.

Sealing rings (1) for intake valves are yellow.

Sealing rings (2) for exhaust valves are green.

Checking cylinder head wet seal

Before refitting, smear the plug surfaces with
water-repellent sealant.

Checking cylinder head supporting surface

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12-26 t

ENGINE F4 AE 0481

Base - February 2003

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Iveco EuroCargo (12 to 26 t). Manual - part 19