68
Starter motor
The starter motor is mounted on the flywheel casing
on the right of the engine.
When the starter motor is engaged, a drive on the
starter motor’s rotor shaft is moved in an axial direc-
tion so that it engages with a spur ring on the engine’s
flywheel. The drive’s axial movement and the engage-
ment of the starter motor are controlled by a control
solenoid on the starter motor.
The starter motor’s control solenoid is engaged in turn
via the starter relay* when the starter key is held in
position III.
* Pos. 5 on the overview illustration on pages 65 and 67 or pos. 8
on the illustration on page 66.
Connecting the sensor system
Turn the engine off and switch off power at
the main switches before carrying out work
on the electrical system.
1. Disconnect the yellow sensor cable from the B+
connection on the generator.
2. Splice the cable (yellow, 1.5 mm
2
) and route it to
the batteries. Connect the cable to the batteries’
positive (+) pole.
Charging control lamp (extra generator)
A separate charging control lamp (3W) can be con-
nected to the extra 28V/100A generator.
A resistor (3) P/N 863400-8 (47
Ω
/25W) must also be
connected as shown in a separate wiring diagram on
page 73.
Fuel shut-off valve
TAMD63, TAMD71B and TAMD73WJ engines are
stopped via a solenoid valve (fuel shut-off valve)
which is activated during stopping. The valve changes
the direction of the fuel flow to and from the feed
pump so that a vacuum is created in the fuel chamber
of the injection pump. This makes it impossible for the
pump element to fill up and the engine stops.
This valve is located on a bracket beneath the injec-
tion pump.
AC generator
The generator is belt driven and located at the front of
the engine.
The engine’s standard generator can be fitted with a
charge distributor as an accessory. Two independent
battery circuits can then be charged simultaneously.
The charge distributor separates the two groups from
one another so that the engine’s storage batteries are
kept fully charged even if the “accessory batteries”
are weak or almost discharged.
Note. The charging voltage from the 28V/60A genera-
tor is thermally compensated. The voltage increases
at low temperatures and is reduced at higher tempera-
tures.
Voltage regulator with sensor system
The voltage regulator for the standard generator (14V/
60A, or 28V/40A* or 28V/60A) has a sensor system.
This sensor system compares the charging voltage
between the generator’s B+ and B– connections with
the charging voltage between the batteries’ positive
and negative poles. The voltage regulator then com-
pensates any drop in voltage in the leads between the
generator and the batteries by increasing the charging
voltage from the generator, if necessary.
When supplied by Volvo Penta, the sensor system is
not activated. However, it is likely that it was connect-
ed when the engine was installed.
* Note. The 28V/40A generator is for the TAMD63 engine.
Fuses
These engines have two semi-automatic fuses of
approx. 8A. These fuses break the current in the
event of overloading.*
* TAMD73P, TAMD74: If a fuse blows the engine stops.
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Summary of Contents for TAMD63L
Page 1: ...INSTRUCTION BOOK TAMD63L P TAMD71B TAMD73P WJ TAMD74C L P ...
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Page 124: ...7740156 0 English 6 2000 AB Volvo Penta SE 405 08 Göteborg Sweden www volvopenta com ...
