CHART OF COMMON DIFFICULTIES SECTION 3
N. Wear or slipring on one polarity
  Possible Causes Remedies
2 Vibration from external causes, i.e. forge hammer Remove causes - mount machine on shock absorbers
  Vibration from internal causes, i.e. out of balance Balance armature and check for bearing wear
9 Electrolytic wear of slipring Reserve polarity of rings periodically
18 Commutator or slipring excentric Turning and grinding at near rated speed
20 Spring pressure too low Adjust to brush grade
29 Radial brush holders not in correct position Adjust holder to radial position, distance from commutator 2-3mm
30 Reaction type holder mounted trailing Reverse holders or direction of rotation
34 Brush holder mounted too far from commutator or slipring Adjust holder to be 2mm from commutator

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Unit 1, 120 Shad Road,
Wadeville Ext2
Alberton
South Africa

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Alberton
1450 
South Africa

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