C78 ENT M50
INSTALLATION INSTRUCTIONS
10
FEBRUARY 2003 EDITION
Power grid
This provides electrical power to the EMB and the electri-
cal starter motor and allows the alternator to recharge the
batteries. The EMB is connected to the batteries by means
of a wire bundle led to the H connector.The yard shall use
conductors with a cross section of at least 6 mm2 taking
care to connect both conductors set to positive polarity to
the + terminal of the battery.
Connection of the po30 of the electrical starter
motor to the positive terminal of the battery allows to
obtain, as shown in the figure, the simultaneous connection
of the alternator.
To have a sufficient quantity of energy available when start-
ing the engine, we recommend installing two series of ded-
icated batteries separately, the first for starting the engine
and powering the injection system, the second one for on-
board electrical machinery. The battery used to power the
machinery may be recharged by interposing on the power
supply line a relay commanded by the voltage of the alter-
nator’s electronic regulator recharge signal.
Engine electrical ground
The engine electrical connection is achieved by connecting,
with a cable of suitable cross section, the negative terminal
of the battery to the fastening point of the electrical starter
motor as shown in Figure 8.
The grounding terminal is secured to the motor proceed-
ing as follows:
❏
Completely remove the conducting paint or the old
conducting paint from both parts constituting the con-
nection, either with mechanical means or with a suit-
able chemical product; if parts whose surface has been
treated need to be used for the securing operation, first
completely remove the anaphoretic paint by
mechanical
means, obtaining a smooth suppor t
plane;
❏
Apply a uniform layer of the BH44D product (IVECO
Standard 18-1705) with a brush or spray gun;
❏
Join the parts constituting the ground node within 5
minutes after applying the product.
Figure 8
POWER GRID DIAGRAM
1. H Connector.
ENGINE ELECTRICAL GROUND
CONNECTION POINT
70 mm
2
10 mm
2
6 mm
2
6 mm
2
6 mm
2
70 mm
2
H CONNECTOR
1. EMB Power supply (positive) - 2. Grid heater power
supply (positive) - 3. EMB power supply (negative).
3
1
2
81424
81425
81789
Figure 6
Figure 7
1
Summary of Contents for C78 ENT M50
Page 1: ...C78 ENT M50 MARINE ENGINE INSTALLATION INSTRUCTION ...
Page 4: ...C78 ENT M50 IV FEBRUARY 2003 EDITION ...
Page 6: ...C78 ENT M50 OVERVIEW 2 FEBRUARY 2003 EDITION ...
Page 34: ...C78 ENT M50 DIAGNOSTICS 2 FEBRUARY 2003 EDITION ...
Page 37: ...C78 ENT M50 5 FEBRUARY 2003 EDITION NOTES ...
Page 38: ...C78 ENT M50 6 FEBRUARY 2003 EDITION NOTES ...
