Description
Alternator Fits John Deere Utility Tractors 3320 3520 3720 Diesel MIA10222
Applications:
JOHN DEERE Tractors – Utility 3320 All Yanmar 32.8HP Dsl
JOHN DEERE Tractors – Utility 3520 All Yanmar 37.1HP Dsl
JOHN DEERE Tractors – Utility 3720 All Yanmar 44.0HP Dsl
Specifications:
Unit Type: Alternator
Manufacturer: VALEO
Voltage: 12
Rotation: CW
Amperage: 70
Pulley Type: V1
Fan Type: IF
Regulator: IR
NOTE:
-1-V PULLEY 63mm OD
Replaces These Part Numbers:
JOHN DEERE: MIA10222
VALEO: 2655641
Common Signs Your Alternator Needs Replacement
If your John Deere tractor experiences any of the following symptoms, the alternator may require replacement:
- Battery repeatedly loses charge
- Warning light remains illuminated
- Slow or difficult engine starting
- Flickering or dim headlights
- Weak electrical accessories
- Burning electrical smell
- Unusual alternator noise
- Frequent battery replacements
Replacing the alternator before complete failure helps prevent unexpected downtime and costly repairs.
Easy Installation
Designed as a direct replacement for the original alternator, installation is straightforward for experienced technicians and qualified DIY owners.
General Installation Steps Include:
- Disconnect the battery.
- Remove the old alternator.
- Inspect the drive belt.
- Install the replacement alternator.
- Reconnect electrical connections.
- Reinstall and tension the belt.
- Reconnect the battery.
- Verify charging voltage after startup.
Proper installation ensures optimal charging performance and long service life.

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