13
2020.05 / c
Electric Power Generation
Installation and maintenance
LSAH 44.3
Low Voltage Alternator - 4 pole
5577 en -
4.7 - 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 when moved). 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: 7, 8, 10, 12 mm
- 1 socket set: 8, 10, 13, 16, 18, 21, 22,
24 mm
- 1 Allen key: size 5 (eg. Facom: ET5), size 6
(ET6), size 10 (ET10, size 14 (ET14)
- 1 T20 and T30 TORX bit
- 1 puller (U35)/(U32/350)
• Screw tightening torque
See section 5.4.
• Draining the cooling circuit
- Leave the machine stationary for 6 hours
before draining the cooling circuit (operating
temperature 70°C).
- The cooling circuit must be drained using a
fluid recovery system.
Toxic risk
The coolant can contain up to 50%
glycol-type antifreeze, which represents
a risk to health.
• Access to diodes
- Remove the inspection door [38].
- Check all 3 modules using an ohmmeter or
a battery lamp.
- Refit the modules.
- Refit the inspection door [38].
• Access to connections and the
regulation system
The terminals are accessed directly by
removing the cover [136].
• Replacing the NDE bearing
- Dismantling
- Remove the 2 fixing bolts [78].
- Remove the 4 fixing bolts [36].
- Remove the NDE shield [36] using a puller:
eg. U.32 - 350 (FACOM).
- Remove the antifriction bearing [70] using
a screw puller.
- Reassembly
- Heat the inner slipring of a new bearing by
induction or in a drying oven at 80°C (do not
use an oil-bath) and fit it to the machine.
- Place the preloading wavy washer [79] in
the shield and fit a new O ring seal [349].
WARNING
