10
2020.01 / b
Electric Power Generation
Installation and maintenance
LSA PMR 320
Alternator for rail application - 8-pole
5785 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.
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.
• Access to connections
The terminals are accessed directly by
removing the terminal box cover [136].
• Replacing the DE bearing
- Remove the alternator from the genset.
- Remove the DE protective grille [33].
- Remove the screws [62] holding the bearing
retainer (68) in place.
- Remove the screws [31] holding the DE
shield [30] on the frame.
- Pull on the DE shield to separate it from the
frame with a suitable tool (which we can
provide).
- The rotor will stick to the stator, and is likely
to make a noise.
- Remove the circlip [67] from the DE bearing
[60].
- Push the bearing retainer [68] back along
the shaft.
- Pull out the DE bearing [60].
- Fit the new DE bearing, taking care not to
overheat it.
- Refit the DE shield [30] by repeating these
steps in reverse order.
- Grease and fit a new seal.
• Replacing the NDE bearing
- Remove the alternator from the genset.
- Remove the cover plate from the NDE
shield [73].
- Open the terminal box (132).
- Undo the power connections [124] and
sensors [197].
- Detach the clamps holding the wiring in the
terminal box and the NDE shield [36].
- Undo the screws [62] holding the bearing
retainer (68) in place.
- Remove the screws [37] holding the shield
on the frame.
- Remove the DE shield with a suitable tool
(which we can provide).
- The rotor will stick to the stator, and is likely
to make a noise.
- Push the bearing retainer [68] back along
the shaft.
- Pull out the NDE bearing [60].
- Fit the new NDE bearing, taking care not to
overheat it.
- Refit the NDE shield [36] by repeating
these steps in reverse order.
4.7 - Table of characteristics
Table of average values:
alternator - 8-pole - 800 rpm to 2000 rpm
All values are given at ± 10% (for exact
values, consult the test report) and are
subject to change without prior warning.
• Resistance at 20°C - L/N stator:
0.0245 ohms
• No-load voltage as a function of
the speed
Speed (rpm)
U1-2 (V)
800
590
1000
730
1200
885
1400
1020
1600
1180
1800
1330
2000
1470
• Total weight:
900 kg -
Rotor:
330 kg
WARNING
