Engine Iveco C10/C13/C78/Cursor 13/Cursor 78. Manual — part 81
The oil pressure control valve is located on the left-hand side
of the crankcase.
Start of opening pressure 5 bars.
73542
73543
Figure 8
Figure 9
Figure 10
MAIN DATA TO CHECK THE OIL PRESSURE
CONTROL VALVE SPRING
HEAT EXCHANGER
The heat exchanger is fitted with: 1. Oil temperature sensor - 2. Oil pressure sensor for pressure gauge - 3. Transmitter for
low pressure warning lamp - 4. Heat valve - 5. By-pass valve. Number of elements 9.
Oil pressure control valve
Heat exchanger
78950
10
SECTION 1 - GENERAL SPECIFICATIONS
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 uni-
form 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 el-
ement, 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 manu-
factured 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 11
Figure 12
Figure 13
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
SECTION 1 - GENERAL SPECIFICATIONS
11
Figure 14
A/B
outlet/inlet for vehicle heater
C
inlet from the expansion vessel
D/E
outlet from the radiator and the thermostat body for expansion vessel inlet
Water flowing out of the thermostat
Water circulating in the engine
Water flowing into the pump
101603
12
SECTION 1 - GENERAL SPECIFICATIONS
60631
Figure 15
Figure 16
Figure 17
Thermostat
The water pump is composed of: impeller, bearing, seal and
driving pulley.
Check that the pump body has no cracks or water
leakage; if it does, replace the entire water pump.
CROSS-SECTION OF THE WATER PUMP
View of thermostat operation
60747
Water circulating in the engine
TO THE
EXPANSION
TUB
FROM
THE ENGINE
TO THE
BY PASS
Water leaving the thermostat
60748
TO THE
RADIATOR
TO THE
EXPANSION
TUB
TO THE
BY PASS
FROM
THE ENGINE
Check the thermostat works properly; replace it if in doubt.
Temperature of start of travel 84
± 2 °C.
Minimum travel 15 mm at 94
± 2°C.
TO THE
RADIATOR
Water pump
NOTE
SECTION 1 - GENERAL SPECIFICATIONS
13
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