Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERSBENCH TESTINGBRUSH HOLDER TEST
2004 Acura 3.5RL
Brush Holder Test
2004 Acura 3.5RLSECTION Brush Holder Test
- Using an ohmmeter, check continuity between positive and negative brush holders (brackets). See Fig 1 . Continuity should not exist. If continuity exists, brush holder assembly is shorted and must be replaced.
- Measure brush length. Insert brush into brush holder. Bring brush into contact with commutator and attach a spring scale to spring. Measure brush spring tension at moment spring lifts off brush. See Fig 2 . If brush length or spring tension is less than specification, replace brush holder assembly. See STARTER SPECIFICATIONS . Ensure brushes move freely in holders.
NOTE:
To seat new brushes after installing them in their holders, slip a strip of #500 or #600 sandpaper, with the grit side up, over the commutator, and smoothly rotate the armature. The contact surface of the brushes will be sanded on the same contour as the commutator.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.