Repair Manual

33
REAR BEARING ELEMENTS
33 - 5
D
ISMOUNTING
Dismount the M 8 x 1,25 - ( 1 ) screw.
Dismount the elastic ring 32 and washer 8,1 x 12,7 - ( 3 ).
Dismount the four 4 screws M 10 x 1,5 - ( 4 ).
Dismount the “ hub drum – brake plate “ assembly and place it on a bench.
Straighten the shoulder of the slotted nut ( 5 ).
Unscrew the slotted nut and take out the bearing washer ( 6 ).
Separate the brake plate from the drum-hub assembly.
Dismount :
- the sunk screw ( 7 ) and separating the drum from the hub assembly;
- the safety ring AI 68;
- depress the bearing casing assembly from the hub by means of the PS 65 device.
R
EMOUNTING
Clean of dust the drum and brake shoes by means of a cleaner ( vacuum cleaner) for
brake.
For remounting, perform the mounting operations in reverse order, respecting the
required tightening moments;
The clearance adjustment shall be perform as follows :
- by means of a wrench, rotate the eccentric downwards until the drum locks, than
rotate it upwards with 1/12 rotations ( 30’ );
-after performing the adjustment, the drum must easily hand rotate. Begin with the
compression brake shoe;
- the brake shoes by pressing several times the brake pedal;
- the hand brake ( see chapter 37 “Controls”).
BRAKE DRUM
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