Brush Assembly
NOTE:
Brushes that are oil soaked or worn out should be replaced.
- Ensure brushes slide freely in brush holder. If brushes do not slide freely, check for dirt or contamination. Clean brushes and recheck operation. Replace brushes if brushes still do not slide freely. See OVERHAUL .
- To check brush holder for a short to ground, check continuity between insulated brush holder and grounded brush holder. See Fig 1 . No continuity should exist. Replace brush holder if continuity exists. See OVERHAUL .
- Inspect brushes for cracks. Using caliper, measure brush length. For specification, see STARTER SPECIFICATIONS . Replace brushes if length is not within specification. See OVERHAUL .
- Insert brush into the brush holder, bring brush into contact with starter armature commutator and attach a spring scale to the brush spring. See Fig 2 . Measure spring tension at the moment spring lifts off the brush. See STARTER SPECIFICATIONS .