Iveco Daily. Manual

A. Stroke start 82

° ± 2 °C.

Stroke at 97

° ≥ 7 mm

Stroke at 110

° ≤ 10.5 mm

The stroke of 7 mm within less than 60”
Water blow-by with thermostat and valve closed
≤ 2 l/h

543212

Electromagnetic pulley

50685

50686

41128

50687

50822

Figure 193

Figure 194

Figure 195

Figure 196

Figure 197

ELECTROMAGNETIC PULLEY SECTION

Use a thickness gauge (3) to check that the distance between
impeller (1) and sealing ring (2) is 0.56

÷ 1.08 mm.

Also check that there are no cracks in pump body. If there
are, replace the whole water pump.

By-pass type thermostat (1) is inserted into the support (2)
fixed to cylinder heads and it does not need any adjustment.
If there are any doubts about its serviceability, replace it.
The thermometric switch/transmitter and water tempera-
ture sensor are fitted on the thermostat body.

Specifications
*

Torque that can be entered at 1000 rpm
and at 20

°C

23 Nm

Torque that can be transmitted at 20_C
with the clutch run in

43 Nm

Voltage

12 Volt

Consumption

24 W

When cooling fluid temperature reaches the value of
94

± 2°C, thermometric switch allows electromagnet (1)

to be supplied and that, becoming magnetized, it attracts
movable plate (2) thus causing hub (4) to become integral
with electromagnetic joint (3).

543210

Water pump

WATER PUMP LONGITUDINAL SECTION

1. Pump body - 2. Bearing locking screw - 3. Pump driving

shaft complete with bearing - 4. Sealing ring - 5. Impeller

A = 0.56

÷ 1.08 mm; assembly clearance between impeller

and sealing gasket for water pump body.

543250

Thermostat

ENGINES 8140.43R/B/S/N

AILY

Base - May 2004

Insert the pipe (2) with the thermostat box (1) into the water
pumpe (3) and fit the parts assembled in this manner onto
the crankcase and onto the cylinder head.

TIMING AND AUXILIARY MEMBER
CONTROL

Figure 198

Figure 199

Figure 200

Figure 201

Figure 202

Fit new seal rings (2) and split rings (3) on the connecting pipe
(4) and insert this into the thermostat box (1).

50688

50689

Insert the reaction pin (2) into its seat in the water pumpe (1).
Fit the guard (3) and the fixed tightener (4).

50689

Fit the mobile tightener mounting without locking the nut (5)
fixing the roller (4).

Insert, between barrel (1) and push rod (2), a special wrench
(3) so as to annul push rod pressure on belt tightener roller
(4).

41818

61900

Check whether cylinder 1 piston is at TDC.
This condition takes place when tool 99395214 (1) pin (2)
is fitted into engine flywheel (3) slit (

⇒) and control gear hole

(5) and timing gear (4) are facing downward.

Setting the timing system

As spares, the screws (4) are supplied with the
thread pre-treated with LOCTITE 506 sealant.
If they are reused, clean the thread thoroughly and
apply IVECO 1905683 sealant on the first 15 mm.

NOTE

ENGINES 8140.43R/B/S/N

AILY

Base - May 2004

86144

50711

Figure 203

Figure 204

Figure 205

Figure 206

Figure 207

45074

- Make coincide notch (1) engraved on camshaft driving

toothed pulley, with that (2) engraved on valve tappets
cover.

86143

61900

- Fit toothed belt (1);

- fit lower cover (4) and tighten fastening screws and nuts

to prescribed torque;

- remove tool (3) so as pushing rod (2), acting on belt

tightener (5), makes toothed belt taut (1);

- remove engine flywheel (3) slit (

⇒) from tool 99395214

(1) pin (2);

- apply a torque of 28

÷ 30 Nm to the crankshaft (3) to

tension the belt (1) slightly;

Use tool 99395849 to check timing belt tension (1) which
must be 90

÷115 Hz in point A.

Fit upper cover (1).

- Turn the crankshaft slowly in the direction of rotation by

two turns and check that hole (5) in gear (4) is facing
downwards and that the pin (2) of the tool (1) is inserted
in the slot (à) through the flywheel (3) when the timing
belt is taut; the notches (1 and 2, Figure 203) must be
aligned.

ENGINES 8140.43R/B/S/N

100

AILY

Base - May 2004

Fit the electromagnetic coupling (2) onto the water pump
shaft (3) and tighten the nuts (1) to the required torque.

Checking

and

aligning

electromagnetic

coupling pulleys

Fit the puller key (5), puller (4) and measure the distance Y
about 88.9 to 90.1 mm.

62075

50696

Figure 208

Figure 209

Figure 210

Figure 211

Fit the hub (1), washer (2) and retaining nut (3).
Block rotation of the hub (1) and tighten the nut (3) in two
stages.

41808

Key the pulley (1) with the spacer, if any, found on disassem-
bly or determined as described in ”Checking crankshaft pulley
alignment”; block engine flywheel rotation with tool
99360306 and tighten the setscrew with a torque wrench to
the required torque.

1st step: tightening with torque wrench at 40 Nm torque;

2nd step: closing with 110

° ± 10° angle.

41824

By means of thickness gauge (1) check the air gap that should
be of 0.25

÷ 0.45 mm.

The hub (2) locking nut is left-handed. This nut (3)
must be replaced at every dismantling.

NOTE

Angle closing is performed with tool 99395216.

NOTE

ENGINES 8140.43R/B/S/N

101

AILY

Base - May 2004

Content .. 27 28 29 30 ..

Iveco Daily. Manual - part 29