Nidec LEROY-SOMER FFB Series, Maintenance Manual

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12
OPTIONS
FFB Brake Motors Maintenance Guide
5287 en - 2019.07 / d
6.2 - DLM lever
- Exploded view
1505
1605
1602
0008
0007
0009
0013 0027
1406 1407
1502
1500
1501 1503
1504
1600 1603
1601
1604 1800
1401
- Parts list
Item Description Qty Item Description Qty
7 Fan 1 1503 Spiral spring under nut 2
8 Fan thrust washer 0 or 1 1504 Locknut 2
9 Locking circlips (item 7) 1 1505 Return spring (item 1501) 1
13 Fan cover 1 1600 Stud (item 1601) 2
27 Cover fixing screw (item 13) 3 or 4 1601 Latch 1
1401 Extension shaft 1602 Rotation axis (item 1601) 1
1406 Cover closing hatch 1 1603 Locknut 2
1407 Fixing screw (item 1406) 4 1604 Return spring (item 1601) 1
1500 Stud (item 1501) 2 1605 Control rod (item 1601) 1
1501 DLRA calliper 1 1800 Spacer 1
1502 DLRA control rod 1
•
Operation
Releasing the brake and maintaining it in position: push
the control rod DLRA 1502 by applying a force towards the
rear of the brake motor, then swivel the rod of the DLM 1605
clockwise. Release the DLRA rod 1502 to lock the brake in
the released position.
• Disassembly
- Unscrew the control rods of the levers 1502 and 1605 (if
mounted on their base).
- Unscrew the screws
27
from the cover, remove the metal
cover 13 .
- Remove the fan 7 by removing the axial locking circlips 9 .
- Extract the fan 7 using two screwdrivers as levers.
- Remove the return spring 1604 .
- If applicable, unscrew the latch stop
1606
.
- Unscrew the hexagonal spacer (catcher springs) DLM 1800 .
- Unscrew the rotation axis of the latch 1602 then remove the
latch 1601 .
- Unscrew locknuts 1603 .
- Unscrew studs
1600
.
- Remove the DLRA according to the procedure in section 6.1.
• Reassembly
Proceed the other way round of dismantling. Screw the
rotation axis of the bolt
1602
at the following torque: FFB1, 2
and 3: 5.75 Nm; FFB4 and 5: 9.9 Nm, ±10%.
Screw the hexagonal spacer DLM 1800 to the torque of 5.75
Nm ±10% for FFB1 in 5. Screw the studs at the following
torque: FFB1 : 5.75 Nm; FFB2 and 3: 9.9 Nm; FFB4 and 5: 24
Nm, ±10%.
- Put the latch 1601 in touch with studs 1600 then screw
the locknuts 1603. Insert a thickness shim of 0,3mm in the
air-gap between the armature 1102 and the yoke 1105 then
squeeze nuts 1603 until block the shim. Unscrew slightly (1/8
of turn) nuts to get the shim free.
- Fit the spring 1604.
- Make sure of motor shaft rotation.
It is prohibited to drive the extension shaft
1401 in manual rotation and the fan 7 with
the parking brake applied, or the brake
released under load.
- Operate the lever DLRA 1502, under the action of spring
1604, the latch 1601 should return to its idle position (rotor
locked).
- Check the air gap between the armature 1102 and the yoke
1105 next to the spacers 1104 . The dimensions shall comply
with the following table:
Brake size With DLM lever
FFB1, FFB2, FFB3 0,6-0,7 mm
FFB4, FFB5 0,6-0,7 mm
- Check visually that the levers
1502 and 1605 are on 2 parallel
planes and perpendicular to
the motor shaft.
After any loosening operation, check that the
brake is in the applied position once the
maintenance operations are performed.
Working position of the DLM lever (NDE motor rear view) :
1605 1605
1502
Item 1605
unlocked
Locking
direction
Item 1605
locked