Doosan G625XF, Руководство по эксплуатации и техническому обслуживанию

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50 Hz: G625 - G690 - G750XW/XF
OPERATION & MAINTENANCE MANUAL 78 60 Hz: G655 - G750 - G800 - G850XW/XF
CAUTION
Replace the dismantled bearing with a new one.
Complete dismantling
- Take out the DE bearing (30) as described in this
manual.
- Support the DE rotor (4) with a strap or with a support
constructed following the drawing below.
- After extracting the rotor, be careful not to damage the
fan and place the revolving field on special V-blocks.
- Remove the NDE bearing ball bearing cover.
- Knock lightly on the shaft end on the opposite side from
the coupling using a small mallet.
- Move the strap as the rotor moves in order to distribute
the weight over it.
- Remove the NDE bearing following the instructions in
this manual.
Reassembling the bearings
- Place the “O” ring seal (349) and the preloading wavy
washer (79) in the bearing seat (36).
- Position on the stator (1), bearings (30) and (36).
- Tighten screws (31) and (37).
- Tilt the inner bearing retainer (78) upwards in order to
lubricate the bearing.
- Tighten the 4 HM10 screws on the inner bearing
retainer (78).
- Fit the air intake grille (51).
- Replace the rear cross-member (269) and the rear
panel (365).
- Replace the connection plate assembly (281 + 270).
- Replace the connector link assembly (281 + 279).
- Replace the neutral link (278).
- Connect the stator connections (T1 to T12) and the
sensing wires.
- Refit the panels (367) and 368) and the grilles 254 and
255).
- Reconnect the AVR.
- Refit thelid of the protective cover (48) and the
inspection door of the AVR (466).
Reassembling the rotor
On single bearing alternators:
- Slide the rotor into the stator and position it as shown in
fig above.
- Tilt the inner bearing retainer (78) upwards in order to
lubricate the bearing.
- Tighten the 4 HM10 screws on the inner bearing
retainer (78).
- Fit the flange and check that the alternator assembly is
correctly mounted and that all screws are tightened.
On two-bearing alternators:
- Slide the rotor into the stator and position it as shown in
the figure above.
- Tilt the inner bearing retainer (78) upwards in order to
lubricate the bearing.
- Tilt the inner bearing retainer (68) upwards in order to
lubricate the bearing.
- Tighten the 4 HM10 screws on the inner bearing
retainer (68 and 78).-
Fit the circlips (284).
- Check that the alternator assembly is correctly mounted
and that all screws are tightened.
NOTE: If the rotor has been fully rewound, it must be
rebalanced.
Threaded rod
Dowel
Nut
NDE shield
Rotor