Iveco Daily. Manual — part 98
75474
75475
75476
Figure 163
Figure 164
Figure 165
Using a micrometer (1), measure the diameter of the pins (2)
of the camshaft and, using a bore meter, measure the
diameter of the supporting seats in the overhead.
The difference between these two measurements gives the
existing clearance.
The nominal assembly clearance is 0.037
÷ 0.088 mm.
541210
Camshaft
Checks
The surfaces of the shaft supporting pins and of the cams
must be finely honed; if there is any sign of meshing or
scoring, replace the shaft.
541211
Checking cam lift and pin alignment
Set the shaft (1) on tailstocks and, using a dial gauge on the
middle mounting, check that the alignment error is no greater
than 0.04 mm; replace the shaft if it is. In addition, check the
cam lift: it must be as prescribed; replace the shaft if it is any
different.
MAIN DATA, CAMSHAFT PINS AND SEATS
1. Intake valve camshaft seats — 2. Exhaust valve camshaft seats — 3. Intake valve camshaft — 4. Exhaust valve camshaft.
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Figure 166
Figure 167
Figure 168
Figure 169
Figure 170
Lubricate the supporting pins of the shafts (2 and 3) and fit
them in the overhead (1).
Position the overhead (1) and secure it on the mounting
SP.2271 (2).
Position the camshafts (4 and 5) so as to be able to insert the
pins 99360614 (3) into their radial holes through the
threaded holes of the overhead.
Compress the tightener so as to be able to insert a suitable
pin (2) into the hole (
→) of the chain drive (1).
Fit the chain drive (2) on the camshafts and secure it to the
overhead (1) tightening the screws (8) to the prescribed
torque.
Screw down the screws (4) and (7) with the washers (5) and
(6) and tighten them as follows:
- Tighten the screw (7) to a torque of 50 Nm.
- Close further with an angle of 60
°.
- Take out the pin (5).
- Tighten the screw (4) to a torque of 50 Nm.
- Close further with an angle of 60
°.
Fit on the rear cover (2) with a new gasket and tighten the
fixing screws (1) to the prescribed torque.
α
In this operation, take care not to damage the
overhead supporting seats.
NOTE
Use the goniometer 99395216 for the angle
closing.
NOTE
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Assembling overhead
75468
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Figure 171
Figure 172
Figure 173
Figure 174
Figure 175
Fit a new seal (3) on the cover (2) and fit this in the overhead.
Fit on the seal (1).
Lubricate the shank of the camshaft.
Using the keying device 99374458 (3), fit the seal (2) in the
overhead (1).
Fit the toothed pulley (1) onto the camshaft so as to align the
hole of the pulley with that of the overhead and insert the
tool 99360608 (4) into these holes. Screw down the screw
(3) together with the washer (2) without tightening fully.
Fit the oil pressure control valve (1) in the crankcase.
Fit on the plug (2) with the seal (3) and tighten it to the
prescribed torque.
Fit the centring tool 99396037 (2) onto the shank of the
crankshaft.
Mount the oil vacuum pump assembly (1) with a new gasket
and tighten the screws (1-15) according to the following
procedures:
- Tighten the screws from no. 1 to no. 6 to a torque of 5
±1 Nm while checking that the tool 99360037 (2) turns
freely.
- Tighten the screws from no. 7 to no. 15 to a torque of
10
±1 Nm.
- Tighten the screws from no. 1 to no. 6 to a torque of 10
±1 Nm.
- After checking that tool 99360037 (2) turns freely,
remove it.
540442
Assembling front seal ring
The toothed pulley (1, Figure 173) is not locked on
the shaft since it must be able to turn when fitting
and tensioning the timing belt. For the same reason,
keep the tools 99360608 (4, Figure 173) and
99360614 (3, Figure 167) fitted.
NOTE
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Lubricate the shank of the crankshaft.
Screw down part (3) of tool 99346254 in the crankshaft and
place the seal (2) on the part (3).
Key part (5) of tool 99346254 onto part (3), screw down the
nut (4) until the seal (2) gets into position in the seat of the
oil vacuum pump assembly (1).
Take out the tool 99346254 (3, 4 and 5).
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Figure 176
Figure 177
Figure 178
Figure 179
Figure 180
Turn the crankshaft so as to be able to insert tool 99360615
(5) into the hole in the crank of the crankshaft, through the
hole in the oil vacuum pump assembly (1), to block crankshaft
rotation.
Mount the gear (2), screw down the screw (3) together with
the spacer (4) and tighten it to the prescribed torque.
Mount the speed sensor (1) with a fresh gasket and tighten
the fixing screw (2) to the prescribed torque (if applicable).
Fit on the compressor mounting (3) and tighten the fixing
screws (4) to the prescribed torque.
Mount the air-conditioner compressor (1) (if applicable) and
tighten its fixing (2) screws to the prescribed torque.
Mount the oil pressure transmitter (3) with a fresh gasket.
Mount the heat exchanger (1) with a fresh seal and tighten
the coupling (2) to the prescribed torque.
Do not remove the tool 99360615 (5) as it will be
needed for fitting the timing drive belt.
NOTE
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