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AIRCRAFT MAINTENANCE MANUAL
BATTERY INSTALLATION
Reverse the battery removal procedure.
VOLTAGE REGULATION
The generator output voltage is regulated
by the voltage regulator circuitry.
using an integrated circuit comparator
amplifier with a regulated reference
voltage, and difference between the
reference voltage and the generator
voltage is amplified and supplied to the
comparator circuit, which controls the
shunt field excitation of the generator.
Prior to installation, the voltage regulator
is adjusted under NO load condition to
maintain 26.5+-.2 volts DC generator
output voltage.
After installation, the
generator over voltage control should be
adjusted to 27.5 VDC generator output
voltages at the bus with normal systems
turned on.
VOLTAGE REGULATOR REMOVAL
Gain access to the voltage regulator by
removing R.H. aft cowl skin. If removal is
necessary, proceed as follows:
A. Verify that the battery switch is OFF,
that
the
external
disconnected, and that the batteries
are disconnected.
B. Disconnect the retaining clips from
the voltage regulator and remove
voltage
regulator
regulator base.
VOLTAGE REGULATOR
INSTALLATION
A. Verify that the battery switch is OFF.
B. Brighten up all electrical contacts,
both on the voltage regulator and the
6 each fingers on the voltage
regulator base, with Scotch-brite™
07448 Ultra fine abrasive pad or
equivalent.
Place
Effective: 03/26/2010
THRUSH AIRCRAFT, INC - MODEL S2R-G10
By
power
is
from
voltage
the
voltage
regulator into position and snap it to the
regulator base with the retaining clips.
C
Connect the battery.
D
After
installing,
regulator for 27.5 VDC with engine
running and normal systems operating.
Adjust as necessary.
STARTER GENERATOR
MAINTENANCE
STARTER - GENERATOR REMOVAL
A. Verify that the battery switch is OFF and
that external power is disconnected.
Disconnect the batteries.
* NOTE *
Refer to the starter-generator
maintenance manual for specific
maintenance instructions.
B. Open the upper aft engine cowling to
gain access to the starter-generator.
CAUTION
It is mandatory that the starter-
generator
be
from the time the retaining clamp
is loosened until the unit is
removed from the engine.
starter-generator must never be
allowed
to
weight through the splined shaft
engagement. If this precaution is
not observed, damage to the
shaft shear section will result.
C. Loosen the quick-disconnect clamps
securing the starter-generator to the
mounting adapter and remove the
starter-generator.
STARTER-GENERATOR INSTALLATION
A. Verify that the battery switch is OFF and
that external power is disconnected.
Disconnect batteries.
re-check
voltage
fully
supported
The
support
its
own
10-5
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