Removal And Replacement Of Components And Component Assemblies; Extracting And Inserting The Rotor; Changing Bearing And Collector; Replacing Components And Component Assemblies - Sincro FT Steel Serie Manual De Uso Y Mantenimiento

7.6 Removal and replacement of components
and component assemblies

7.6.1 Extracting and inserting the rotor

The following procedures presume the alternator has been
separated from the engine.
Dual bearing (B3 B14), cone version and SAE single
bearing version.
• Remove the tap, unscrew the screw of the brushes and
hammer the back of the rotor, (for B3 B14 version, unscrew
the four M10 nuts that fasten the flange to alternator) so
that the bearing comes free.
• Lift the rotor with a belt on the coupling side.
• Continue to drive the rotor out of the stator, gradually
adapting the sling so that the winding is not damaged.
Insert the rotor following in reverse the instructions at section
7.6.1.
When the rotor is repositioned, the alternator may loose
the residual magnetism that enables it to self-excite. Before
restart of the generating set the alternator can be excited
by applying a 6-12 volt current across the exciter terminals
for a second, respecting the polarities (while engine doesn't
working or while engine running).

7.6.2 Changing bearing and collector

See section 7.6.1
• Remove the protection T
• Disconnect the wires of the collector
• Remove the collector using a standard extractor
• Remove the seeger ring (R).
• Remove the bearing or bearings (B) using a standard
extractor.
• Take the new bearing or bearings and heat them (max.
100 ÷ 110°C) so their diameter dilates before sliding them
into position on the shaft.
• Replace the seeger ring (R).
• Take the new collector C, and connect again the wires
(see section 7.6.1)
• Insert the protection T
• Insert the rotor by following in reverse the instructions at
section 7.6.1.
7.6.4 Replacing components and component
assemblies
When assembling after changing a part repeat the above
operations in reverse.
R
C
T
ENGLISH
B
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