Iveco Daily. Manual — part 164
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Figure 133
Figure 134
Figure 135
Figure 136
Figure 137
The checks are made using a dial gauge (2) with a magnetic
base, positioned as illustrated. The assembly clearance is
0.033 — 0.063 mm.
Making the valve (1) turn, check that the centring error is no
greater than 0.03 mm.
MAIN DATA OF VALVE GUIDES — SEATS
Valve guide seat inside
∅
9.980
÷ 10.000 mm
Valve guide outside
∅
10.028
÷ 10.039 mm
* Measurement to be made after driving in the valve guides.
Remove the valve guides (2) with the drift SP.2312 (1).
Warm up the cylinder head to 80
° ÷ 100°C and, by means
of beater SP.2312 (1) fitted with element SP.2311 (2), fit the
new valve guides (3) previously lubricated with engine oil.
Driving force 10
÷ 25 KN.
If the above mentioned tools are not available, fit the valve
guides by positioning them in the cylinder head according to
the value shown in Figure 134.
After driving in the valve guides (2), regrind them with the
smoother SP.2310 (1).
Checking clearance between valve stem and
valve guide and centring valves
540667
VALVE GUIDES
Replacing valve guides
Boring valve guides
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F1C ENGINE
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Check the valve seats. On finding any slight scoring or burns,
regrind them with an appropriate tool according to the
angles given in Figure 138.
Having to replace them, with the same tool and taking care
not to affect the cylinder head, remove as much material
from the valve seats as possible until, with a punch, it is
possible to extract them from the cylinder head.
Heat the cylinder head to 80
÷ 100°C and, using a suitable
drift, fit in it the new valve seats, previously chilled in liquid
nitrogen.
Using a specific tool, regrind the valve seats according to the
angles given in Figure 138.
Using the milling cutter 99394038 (1), clean the injector seat
of any deposits.
Mount the valves, block the seat of the electro-injectors and
glow plugs; using a suitable tool, check the seal of the
valves/seats.
Using a dial gauge (1), check that, from the plane of the
cylinder head, the valve recessing (2) and the protrusion of
the injector (3) and of the glow plug have the prescribed
value:
-
Valve recessing: 0.375
÷ 0.525 mm.
-
Injector protrusion: 2.77
÷ 3.23 mm.
-
Glow plug protrusion: 3.78 mm.
540661
VALVE SEATS
Regrinding - replacing valve seats
Figure 138
Figure 139
Figure 140
F1C ENGINE
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AILY
Base - May 2004
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Figure 141
Figure 142
Figure 143
Figure 144
Before assembly, check the flexibility of the valve springs with
the tool 99305047. Compare the load and elastic
deformation data with those of the new springs given in the
following figures.
MAIN DATA TO CHECK INTAKE AND EXHAUST
VALVE SPRINGS
COMPLETE ROCKER ARM ASSEMBLY
The rocker arm assembly is composed of the rocker arm (1),
hydraulic tappet (3), made integral with each other by the clip
(2).
540665
VALVE SPRINGS
ROCKER ARMS — TAPPETS
CROSS-SECTION OF THE HYDRAULIC TAPPET
A = 32.44
±0.3, end of stroke
B = 31.30, working position
C = 29.75
±0.25, start of stroke
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F1C ENGINE
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Height
Under a load of
mm
kg
H 54
Free
H1 45
P 243
±12
H2 35
P1 533
±24
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87802
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Figure 145
Figure 146
Figure 147
Checks
The sliding surface of the tappets must have no scoring/dents;
replace them if they do.
Using a micrometer, measure the diameter of the tappets
and, using a bore meter, measure the diameter of the seats
in the cylinder head; the difference in the measurements will
give the assembly clearance.
Lubricate the stem of the valves (1) and insert them into the
associated valve guides (4) according to the position marked
during removal. Using tool SP.2264 (2), mount the oil seals
(3) on the valve guides (4).
MAIN DATA HYDRAULIC TAPPETS — SEATS
Position the springs (8) and plates (7) on the cylinder head
(5).
Fit the part (4) of tool 99360260 onto the cylinder head (5)
and secure it with the screws (3).
Fit the part (2) of tool 99360260 onto part (4), screw down
the nut (1) so that by compressing the springs (8) it is possible
to insert the retaining cotters (6); then unscrew the nut (1)
checking that the cotters (6) have settled in correctly.
Repeat these operations on the remaining valves.
ASSEMBLING CYLINDER HEADS
The suction valves (5) are different from the
exhaust ones for a slot (
→) in the centre of the
valve head.
NOTE
F1C ENGINE
555
D
AILY
Base - May 2004
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