2018.11 / m
16
Electric Power Generation
Installation and maintenance
LSA 40
Low Voltage Alternators - 4 pole
4455 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
alternator 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, 12 mm
- 1 socket set: 8, 10, 13 mm
- 1 socket TORX bit T20, T30
- 1 puller (eg. Facom: U35, U32/350)
• Bolt tightening torque
See section 5.3.
The bolts for fixing the feet on the
housing and immobilising the stator
must not be removed (bolt of the stator
lower).
• Access to connections and the
regulation system
The terminals and AVR are accessed
directly by removing the terminal box lid
(41).
• Accessing, checking and replacing the
diode bridge
Dismantling
- Remove the terminal box lid [41].
- Cut the fixing clamps of the exciter cables,
disconnect E+, E- from the exciter.
- Remove the 4 nuts on the tie rods.
- Remove the NDE shield [36] using a puller:
eg. U.32 - 350 (Facom).
- Unsolder the connections.
- Check the bridge using an ohmmeter or a
battery lamp.
Reassembly
- Replace the bridges, respecting the
polarity.
- Resolder the connections.
- Fit a new O ring seal in the shield.
- Refit the NDE shield and pass the bundle
of wires between the top bars of the shield.
- Replace the fixing clamps on the cables.
- Replace the terminal box lid [48].
WARNING
Rotor
NDE shield
M8 threaded rod
