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Brush and brush holder

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that there is no continuity between each insulated brush and plate using an ohmmeter.
    • If there is continuity, replace the brush holder.
    Fig 1: Verifying There Is No Continuity Between Each Insulated Brush And Plate
    G03699987Courtesy of MAZDA MOTORS CORP.
  2. Measure the brush length.
    • If any brush is worn almost to or beyond the minimum specification, replace all the brushes.

    Standard brush length 

    1. 12.3 mm {0.48 in} 

    Minimum brush length 

    1. 7.0 mm {0.28 in} 
    Fig 2: Measuring Brush Length
    G03699988Courtesy of MAZDA MOTORS CORP.
  3. Measure the brush spring force using a spring balance.
    • If not within the minimum specification, replace the brush spring.

    Standard spring force 

    1. 21.6 N {2.20 kgf, 4.84 lbf} 

    Minimum spring force 

    1. 5.9 N {0.6 kgf, 1.3 lbf} 
    Fig 3: Measuring Brush Spring Force Using A Spring Balance
    G03699989Courtesy of MAZDA MOTORS CORP.
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