| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 1 Year |
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663-81840-10-00
Brush Holder Assy, Yamaha,
For Outboard: Yamaha 55, Yamaha 75, Yamaha 80, Yamaha 85, Yamaha 90
663-81840-11-00
Brush Holder Assy, Yamaha,
For Outboard: Yamaha 50, Yamaha 55, Yamaha 75, Yamaha 80, Yamaha 85, Yamaha 90
Features:
| 1. Spring-Loaded Brushes: The brush holder assembly houses the carbon brushes, which are pressed against the rotating commutator or slip rings by spring pressure. This ensures constant contact and helps in the efficient transfer of electricity. |
| 2. Precision Construction: The assembly is designed for precision fit and alignment, ensuring that the brushes maintain proper contact with the commutator without excessive wear. |
| 3. Heat and Wear Resistance: Brush holders are designed to withstand the heat generated by electrical friction and the mechanical wear caused by the constant movement of the motor's rotating parts. |
Functions:
| 1. Conducts Electricity: The main function of the brush holder assembly is to conduct electricity from the stationary wiring to the rotating armature or rotor in the starter motor or alternator. |
| 2. Maintains Brush Contact: The springs in the brush holder push the brushes against the commutator, ensuring continuous electrical contact, which is crucial for consistent operation. |
| 3. Supports Brushes: The assembly holds the brushes in place, ensuring they don't move out of alignment or wear unevenly, which could lead to starter or alternator failure. |
| 4. Facilitates Engine Start: In the starter motor, the brush holder assembly helps power the armature, which spins to crank the engine, making it an essential part of the starting system. |
Maintenance Tips:
| 1. Inspect Brushes Regularly: Over time, carbon brushes wear down due to constant contact with the rotating commutator. Regularly inspect the brushes for wear and replace them if they are worn below the recommended thickness. |
| 2. Clean Commutator or Slip Rings: Dirt, grease, or debris on the commutator can affect the contact between the brushes and the motor's rotating parts. Clean the commutator periodically to ensure smooth operation. |
| 3. Check for Spring Tension: Ensure the springs in the brush holder assembly are still providing adequate tension to press the brushes against the commutator. If the tension is too weak, the brushes may not make good contact, leading to electrical issues. |
| 4. Inspect for Heat Damage: Overheating can cause the brush holder assembly to warp or the brushes to wear prematurely. Look for signs of discoloration or melting in the holder, which could indicate excessive heat. |
| 5. Lubricate Moving Parts: Apply a small amount of lubricant to the mechanical parts of the brush holder assembly, but avoid getting any on the brushes or commutator, as this could interfere with electrical contact. |
Common Issues and Symptoms:
| 1. Starter Motor Failure: If the brushes in the brush holder assembly wear out or lose contact with the commutator, the starter motor may not function properly, leading to difficulty starting the engine or complete failure to start. |
| 2. Reduced Electrical Output: Worn brushes or poor contact can also lead to reduced output from the alternator, causing charging issues for the outboard motor's battery. |
| 3. Excessive Wear on Commutator: Damaged or improperly aligned brushes can cause excessive wear on the commutator, which may require costly repairs or replacement. |
| 4. Intermittent Starting Issues: A failing brush holder assembly may cause the starter motor to work intermittently, leading to unreliable engine starts. |
More Products We Have:
| PART NO | DESCRIPTION |
| 688-81800-12 | STARTING MOTOR ASSY |
| 676-81850-11 | ARMATURE ASSY |
| 676-81809-10 | WASHER KIT |
| 676-81857-10 | PINION STOPPER SET |
| 688-81810-11 | STATOR ASSY |
| 663-81840-11 | BRUSH HOLDER ASSY |
| 663-81811-11 | BRUSH 1 |
| 663-81812-11 | BRUSH 2 |
| 663-81813-10 | SPRING, BRUSH |
| 663-81820-12 | REAR BRACKET ASSY |
| 663-81832-11 | PINION ASSY |
| 688-81830-11 | FRONT BRACKET ASSY |
| 688-81831-00 | METAL, FRONT |
| 663-81826-10 | BOLT |
| 688-81824-00 | WASHER 2 |
| 688-81842-00 | COVER |
| 97880-04010 | SCREW, PAN HEAD |
| 92990-04600 | WASHER, PLATE |
| 97013-08030 | BOLT |
| 92903-08100 | WASHER, SPRING |
| 92990-08600 | WASHER, PLATE |
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