Minuteman ERide 21, Руководство по обслуживанию

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7.4 CHECK AND REPLACEMENT OF THE CARBON BRUSHES
FOR THE DISK BRUSH MOTOR
1. Remove the disc brush holder head (see procedure in the specific
paragraph). paragraph).
2. Externally cleaning the motor or dirt and dust, in the area of the carbon
supports (1, Figure 7-7 ).
3. Remove the four carbon supports (1) after having disengaged the retainers
(2) and (3). If necessary, disconnect the electrical connections (4).
4. Check the state of wear of the four carbons (5); the carbons are worn when
sufficient contact with the armature of the motor is not provided because of
their consumption, the non-integrity of the contact surfaces, broken thrust
spring, etc. The minimum length of the carbons (5) is 15 mm, which, when
reached must be replaced.
5. If necessary, disconnect the connections (6) and remove the carbons
complete with support (1) to replace them The carbons should be replaced complete with support (1) to replace them. The carbons should be replaced
all together.
6. For the reassembly, reverse the sequence of operations performed for
disassembly, with the following caution: when fixing the terminals (6) pay
particular attention to their isolation from the surrounding chassis parts.