Fitting; Collector - Meyra Optimus Service Manual

– Slightly pull out the carbon brush retainer (fig. 2–
7).
☞
Note:
Two opposite carbon brushes each are connected
to each other by a cable (fig. 2–8/ H) running inside
the motor.
– Remove the philister head screw (fig. 2–9/ I) of the
connecting cable.
– Completely remove the carbon brush retainer.
☞
Note:
1.) The carbon brush retainers cannot be pulled
straight out of the opening. – Slightly turn the car-
bon brush retainer sideways while pulling it out.
☞
The carbon brushes are worn when the pressure
springs come to rest on the retainer without the
carbon brushes reaching over their guide way. They
are also to be replaced when contacts (fig. 2–10/ K)
appear black and blunt. – On intact carbon brushes
the contacts are anthracite coloured and shining.
☞
When one or more carbon brushes are extremely or
totally worn, all carbon brushes are to be ex-
changed. – As a spare part the carbon brushes are
supplied in a set completely assembled in the retain-
er.
– If the carbon brush is completely intact reassemble
the carbon brush retainer and check the next one.

FITTING

The fitting is done analogue in reverse order.

COLLECTOR

The collector (fig. 2–10/ L) located between the carbon
brushes is also to be checked for damages. – To check
them remove a carbon brush retainer.
☞
Note:
The slight grinding marks caused by the carbon
brushes correspond to their normal wear and have
no influence on the performance of the motor. Ex-
treme recesses have to be smoothed out. If partial
segments have been broken out or are extremely
burnt the drive unit has to be replaced.
6
2–6
2–7
2–8
I
2–9
l
2–10
H
K