Nidec LEROY-SOMER FFB Series, Руководство по обслуживанию

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11
en
OPTIONS
FFB Brake Motors Maintenance Guide
5287 en - 2019.07 / d
6 - OPTIONS
6.1 - DLRA lever
- Exploded view
- Parts list
Item Description Qty Item Description Qty
7 Fan 1 1407 Fixing screw 4
8 Fan thrust washer 0 or 1 1500 Stud 2
9 Locking circlips 1 1501 DLRA calliper 1
13 Fan cover 1 1502 DLRA control rod 1
27 Cover fixing screw 3 or 4 1503 Spiral spring under nut 2
1105 Yoke 1 1504 Locknut 2
1401 Extension shaft 1 1505 Return spring (item 1501) 1
1406 Cover closing hatch 1
•
Disassembly
:
- Unscrew the rod from the lever 1502 (if mounted on the
lever).
- Unscrew the fixing 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.
- Unscrew the two locknuts 1504 , remove the spiral springs
1503 .
- Remove the return spring 1505 .
- Remove the calliper
1501
.
- Unscrew the two studs 1500 .
• (Re)Fitting :
Proceed the other way round of dismantling. Screw studs at
the following torque: FFB1: 5.75 Nm; FFB2 and 3: 9.9 Nm;
FFB4 and 5: 24 N.m ±10%.
- Insert a thickness shim j on one side (see diagram opposite)
between the caliper 1501 and the yoke 1105 . Tighten
the nut 1504 into contact with the caliper (spring fully
compressed). Do the same on the other size.
- Remove the 2 shims, the brake should now be in the fully
braked position.
- Operate the caliper 1501 using the lever 1502 ; the lever
should have a slight angular deflection to feel actual
resistance due to brake release.
- While holding the lever 1502 , check that the drive shaft's
rotation (without load).
It is prohibited to drive the extension shaft
and the fan in manual rotation with the
parking brake applied, or the brake released
under load.
Shim thickness (mm)
FFB1 FFB2 FFB3 FFB4 FFB5
1,9 1,6 1,6 2 2
Non-compliance with the j dimension may
cause safety issues (rapid degradation of the
braking torque).
Check the air gap as described in procedure § 4.4.
- When the manoeuvring load is too important, the use of an
element extending the lever 1502 requires compliance with
the following values:
Brake size Max load to supply Maximum limit
FFB1 60 N 100 N
FFB2, FFB3 200 N 400 N
FFB4, FFB5 200 N 600 N
- After fitting the cover, loosen the fixing screws 1407 , fully
screw the control rod 1502 onto the calliper 1501 .
- Position the cover closing hatch 1406 while checking
that the lever's travel is effective (in brake release
position) .
- Tighten the fixing screws 1407 .
After loosening, check that the brake is in the
applied position once the maintenance
operations are performed.
1500
1401
1105
1502
1503 1504
1501
1505
0008
0007
0009
0013
0027 1406
1407
thickness shim j
1500
1504
1503
1501
1105