How to inspect, replace, and reassemble alternator brushes and the voltage regulator on Acura Legend?

Do not attempt to overhaul the alternator; if replacing the brushes and regulator does not resolve the issue, take it to a dealer for rebuilding or exchange it for a rebuilt unit. Begin by removing the alternator and placing it on a clean workbench. Next, take off the three rear cover nuts, the nut and terminal insulator, and the rear cover. After that, remove the five screws that secure the voltage regulator and brush holder. Then, take out the brush holder and the regulator from the rear end frame. If only the regulator is being replaced, install the new unit, reassemble the alternator, and install it on the engine. If replacing the brushes, measure the exposed length of each brush and compare it to the specified minimum length; replace any brush that is shorter than the minimum. Ensure that each brush moves smoothly in the brush holder, then install the brush holder by depressing each brush with a small screwdriver to clear the shaft. Secure the voltage regulator and brush holder screws into the rear frame, followed by the installation of the rear cover, tightening the three nuts securely. Finally, install the terminal insulator and tighten it with the nut before reinstalling the alternator.

Genuine Acura Legend Alternator Brush

Alternator Brushes

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Acura Legend Brush Holder Assembly
Part Number: 31105-PR7-A01
$40.16 MSRP: $56.02
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Product Specifications
- Other Name: Holder Assembly, Brush ; Brush & Holder; Brush & Holder, Brush Holder, Brushe
- Replaces: 31105-PT0-003
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura Legend Brush Holder Assembly
Part Number: 31105-PZ1-003
$40.16 MSRP: $56.02
You Save: $15.86 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Holder Assembly, Brush
- Replaces: 31105-PD1-024, 31105-PD1-014, 31105-PD1-034
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura Legend Holder Assembly, Alternator Brush
Part Number: 31105-PD1-014
$40.16 MSRP: $56.02
You Save: $15.86 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Replaced by: 31105-PZ1-003
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura Legend Brush
Part Number: 31144-P01-003
Product Specifications
- Other Name: Brushes; Brushe
- Replaces: 31144-PD1-004
- Warranty: This genuine part is guaranteed by Acura's factory warranty.

Acura Legend Alternator Brush

The Acura Legend Alternator Brush maintains constant electrical contact between the rotor slip rings, which are spinning, and the charging circuit, which is stationary. This allows the alternator to power both the battery and all other components on board. Made of conductive carbon, each Alternator Brush makes contact with the slip rings using spring tension, so DC power is possible even when the shaft is spinning thousands of times per minute. Early Legend models applied brushes together with an external or internal voltage regulator, but in later years, the logic of the voltage regulator was moved into the PCM in today's Acura cars. The basic Alternator Brush design was unchanged, except for the length and wear indicator grooves, which make the brushes easy to inspect. When an Alternator Brush wears below its service limit, contact weakens, lights dim, and the battery is no longer charged to full capacity. Replacing with new brushes can restore performance without the need to replace the entire alternator. Unlike other charging components, the Alternator Brush is not expensive or difficult to obtain once the rear housing is pulled back. It makes sense to be your first order of business as an Acura owner for your finicky little Legend when you start noticing slow cranking or a lighted charge lamp.

We provide a broad range of OEM Acura Legend Alternator Brush at unbeatable prices on our website. For your OEM parts, You can count on the guaranteed quality, manufacturer's warranty, outstanding customer service, and prompt delivery. We look forward to your visit.

Acura Legend Alternator Brush Parts Questions & Experts Answers

Holder Assembly, Alternator Brush
31105-PD1-014
Q: How to inspect, replace, and reassemble alternator brushes and the voltage regulator on Acura Legend?
A:
Do not attempt to overhaul the Alternator; if replacing the brushes and regulator does not resolve the issue, take it to a dealer for rebuilding or exchange it for a rebuilt unit. Begin by removing the alternator and placing it on a clean workbench. Next, take off the three rear cover nuts, the nut and terminal insulator, and the rear cover. After that, remove the five screws that secure the voltage regulator and brush holder. Then, take out the brush holder and the regulator from the rear end frame. If only the regulator is being replaced, install the new unit, reassemble the alternator, and install it on the engine. If replacing the brushes, measure the exposed length of each brush and compare it to the specified minimum length; replace any brush that is shorter than the minimum. Ensure that each brush moves smoothly in the brush holder, then install the brush holder by depressing each brush with a small screwdriver to clear the shaft. Secure the voltage regulator and brush holder screws into the rear frame, followed by the installation of the rear cover, tightening the three nuts securely. Finally, install the terminal insulator and tighten it with the nut before reinstalling the alternator.