Iveco C78 ENT M50, Инструкция по установке

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C78 ENT M50 INSTALLATION INSTRUCTIONS
13
FEBRUARY 2003 EDITION
Depending on the manufacturing date, the operating logic
for the electronic control may be of two different kinds:
The version manufactured until March 2002 depends on a
pressure contact inserted in the lubrication circuit at the out-
let of the oil filter assembly, identified in the engine wiring by
the J30 connector.
When the key switch is placed and kept in the “START” posi-
tion, the electrical pre-lubricating pump is powered until the
pressure measured reaches about 0.5 bar or for a time inter-
val of up to 10 seconds, during which engine starting is inhib-
ited. Once these phases are completed, the electrical pump
is disabled and engine starting is enabled.
Pressure contact specifications
- R at ambient pressure (0 bar) = 0
Ω
- R at tripping pressure (
≥
0,3 ± 0,15 bar) =
∞ Ω
In the version manufactured starting in April 2002 , the pres-
sure switch is replaced by a thermal switch placed to mea-
sure the temperature of the liquid in the closed cooling loop
identified in the wiring from the same connector J30. If the
key switch is placed and held in the “START” position, when
the temperature measured by the sensor is
≥
60°C, the
engine starts immediately. For lower temperatures, the elec-
trical pre-lubrication pump is powered for about 10 seconds,
during which starting is inhibited.
Once the pre-lubrication phase is complete, power to the
electrical pump is cut off and starting is enabled.
Thermal switch specifications
- R at ambient temperature =
∞ Ω
- R at tripping temp (
≥
60°C ± 3 °C) = 0
Ω
First start
Prepare to re-start the engine as set out in the paragraph
entitled “Engine’s first start / Restoring normal operating con-
ditions” at the end of this section.
Before starting the engine the first time, it is necessary to
completely purge the air from the fuel supply line, acting on
the hand pump of the pre-filter or with the aid of a dedicat-
ed electrical pump. Purge valves are provided on the pre-fil-
ter supplied by IVECO Aifo, downstream of the main filter
and on the cylinder head near the injectors’ electrical con-
nector.
During the first steps of the engine start, complete the oper-
ation from the fitting on the cylinder head.
CAUTION
Carefully prevent the fuel from coming in contact with the
auxiliaries drive belt.
Also check that:
❏
There are no water leaks from the connecting hoses
of the cooling loop pipes.
❏
There are no exhaust gas leaks inside the hull.
PRE-LUBRICATION SYSTEM SENSORS
1. Pressure switch - 2.Thermal switch location.
PURGE FITTING ON CYLINDER HEAD
1
2
Figure 14
Figure 15
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