2017.09 / f
Electric Power Generation
18
Installation and maintenance
TAL 046
Low Voltage Alternators - 4 pole
5377 en -
4.6 - Dismantling, reassembly
During the warranty period, this
operation should only be carried out in
an approved workshop or in our factory,
otherwise the warranty
may be invalidated.
Whilst being handled, the machine
should remain horizontal (rotor not
locked in position). Check how much the
machine weighs before choosing the
lifting method.
• Tools required
To fully dismantle the machine, we
recommend using the tools listed below:
- 1 ratchet s extension
- 1 torque wrench
- 1 set of flat spanners: 8 mm, 10 mm, 18 mm
- 1 socket set: 8, 10, 13, 16, 18, 21, 24, 30 mm
- 1 socket with male ferrule: 5 mm
- 1 puller
• Screw tightening torque
See section 5.4.
• Access to diodes
- Open the air intake grille (51).
- Disconnect the diodes.
- Check the 6 diodes, change the diode
bridges if necessary.
• Access to connections and the
regulation system
Access directly by removing the top of the
cover (48).
• Replacing the NDE bearing
- Remove the box lid (48), the NDE panel
(47) and the side panels (367).
- Disconnect the stator outputs (T1 to T12).
- Disconnect the exciter wires.
- Remove the air inlet louvre (51).
- Remove the 8 nuts from the tie rods (37).
- Remove the shield (36).
- Take out the antifriction bearing (70) using
a puller with a central screw (see drawing
below).
- Remove the screws from the bearing stop
(78).
- Fit the new antifriction bearing onto the
shaft after heating it by induction to
approximately 80 °C.
- Mount the new preloading (wavy) washer
(79) + the new “O” ring seal (349) in the
shield (36) and coat the bearing seat with
adhesive paste (see After Sales Service).
- Screw a threaded rod into the thrust
bearing (78).
- Refit the end shield on the machine using
a dowel and nut in the shaft extension (see
drawing).
- Slide the threaded rod into the shield hole
to make it easier to assemble (see basic
diagram).
WARNING
