20460886 Carbon Brush | Genuine Volvo Penta Part

🔧 Product Description

Carbon-brush service component for the specified 28 V alternator assembly. It maintains electrical contact with the rotating slip rings so field current can be supplied to the rotor. Carbon-brush service component used in the Volvo Penta 28 V / 140 A alternator assembly. It maintains sliding electrical contact with the rotor slip rings and is catalogued with alternator 20460893 and its component group.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD720VE
• Volvo Penta TAD721VE
• Volvo Penta TAD722VE
• Volvo Penta TAD750VE
• Volvo Penta TAD520VE
• Volvo Penta TAD760VE

• Engine Family: TAD
• Year Range: Approximately late 1990s-2000s

⚙️ Key Features

• Carbon brush for the 28 V alternator, 0.007 kg
• Catalogued with alternator 20460893
• Listed for 6 TAD applications

🔌 Function

Maintains sliding electrical contact between the stationary brush holder and alternator rotor slip rings, allowing the regulator to control magnetic field current.

⚠️ Common Signs of Failure

• Intermittent or low alternator output
• Charging warning lamp remains illuminated
• Carbon brushes worn below their service length or sticking in the holder
• Arcing, heavy carbon contamination or damaged slip-ring surfaces
• Charging output changes when the alternator is tapped or exposed to vibration

🛠️ Service Notes

• Check the slip-ring surface for scoring and carbon build-up before fitting new brushes - a rough ring wears fresh brushes down quickly

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 20460893 original 28 V / 140 A alternator
• 20580795 regulator for later alternator 20580794
• 20494172 rectifier
• 20460885 alternator gasket

OEM Reman Alternatives

• 3803960 Volvo Penta exchange alternator

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging