Iveco Stralis AT/AD. Manual — part 27
94
ENGINE F2B
S
TRALIS
AT/AD
Base - January 2003
The oil pump (1) cannot be overhauled. On finding any
damage, replace the oil pump assembly.
See under the relevant heading for replacing the gear (2) of
the crankshaft.
60560
77820
77817
Figure 192
Figure 193
MAIN DATA TO CHECK THE OVERPRESSURE
VALVE SPRING
OIL PUMP CROSS-SECTION
1. Overpressure valve — Start of opening pressure 10.1
± 0.7 bars
Overpressure valve
Figure 194
1
190
± 6N
43,65
33,5
22,95
324
± 9N
ENGINE F2B
95
S
TRALIS
AT/AD
543010
Oil pump
The oil pressure control valve is located on the left-hand side
of the crankcase.
Start of opening pressure 5 bars.
73542
88819
Figure 195
Figure 196
MAIN DATA TO CHECK THE OIL PRESSURE
CONTROL VALVE SPRING
HEAT EXCHANGER
The following elements are fitted on the intercooler: 1. Transmitter for low pressure warning lamp - 2. By-pass valve - 3. Oil
temperature sensor - 4. Oil pressure sensor for single gauge - 5. Heat valve. Number of intercooler elements: 7
Oil pressure control valve
543110
Heat exchanger
77818
168
± 9
308
± 15
63
51
36,4
Figure 197
96
ENGINE F2B
S
TRALIS
AT/AD
Base - January 2003
This is a new generation of filters that permit much more
thorough filtration as they are able to holder back a greater
amount of particles of smaller dimensions than those held
back by conventional filters with a paper filtering element.
These high-filtration devices, to date used only in industrial
processes, make it possible to:
- reduce the wear of engine components over time;
- maintain the performance/specifications of the oil and
thereby lengthen the time intervals between changes.
External spiral winding
The filtering elements are closely wound by a spiral so that
each fold is firmly anchored to the spiral with respect to the
others. This produces a uniform use of the element even in
the worst conditions such as cold starting with fluids with a
high viscosity and peaks of flow. In addition, it ensures
uniform distribution of the flow over the entire length of the
filtering element, with consequent optimization of the loss of
load and of its working life.
Mount upstream
To optimize flow distribution and the rigidity of the filtering
element, this has an exclusive mount composed of a strong
mesh made of nylon and an extremely strong synthetic material.
Filtering element
Composed of inert inorganic fibres bound with an exclusive
resin to a structure with graded holes, the element is
manufactured exclusively to precise procedures and strict
quality control.
Mount downstream
A mount for the filtering element and a strong nylon mesh
make it even stronger, which is especially helpful during cold
starts and long periods of use. The performance of the filter
remains constant and reliable throughout its working life and
from one element to another, irrespective of the changes in
working conditions.
Structural parts
The o-rings equipping the filtering element ensure a perfect
seal between it and the container, eliminating by-pass risks
and
keeping
filter
performance
constant.
Strong
corrosion-proof bottoms and a sturdy internal metal core
complete the structure of the filtering element.
When mounting the filters, keep to the following rules:
- Oil and fit new seals.
- Screw down the filters to bring the seals into contact
with the supporting bases.
- Tighten the filter to a torque of 35
÷40 Nm.
73545
47447
73546
Figure 198
The valve quickly opens at a pressure of: 3 bars.
Thermostatic valve
Start of opening:
- travel 0.1 mm at a temperature of 82
± 2°C
.
End of opening:
- travel 8 mm at a temperature of 97
°C
.
Engine oil filters
By-pass valve
Figure 199
Figure 200
ENGINE F2B
97
S
TRALIS
AT/AD
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