2f3e5fd0 Check of the brush holder

Check isolation of the brush holder.

Fig. 7.52. Check of isolation of the brush holder

By means of an ohmmeter be convinced that resistance between positive "+" and negative "-" the brush holder strives for infinity, i.e. the chain is opened (fig. 7.52).
If resistance is equal "0", i.e. the chain is closed, replace the brush holder.