Rareelectrical 7122AN2

Rareelectrical 63A Alternator Instruction Manual

Model: 7122AN2

1. Product Overview

This document provides essential information for the installation, operation, and maintenance of your Rareelectrical 63A Alternator, Model 7122AN2. This alternator is designed as a replacement unit compatible with various GMC Van models from 1966-1972, replacing specific DELCO OEM part numbers.

Please review this manual thoroughly before attempting any installation or service to ensure proper function and safety.

Rareelectrical 63A Alternator, front view

Figure 1: Front view of the Rareelectrical 63A Alternator, showing the pulley and fan assembly.

Rareelectrical 63A Alternator, rear view

Figure 2: Rear view of the Rareelectrical 63A Alternator, displaying electrical connections and mounting points.

Product Video

Video 1: An overview of Rareelectrical products, demonstrating their application in various vehicles and machinery. This video highlights the brand's commitment to quality and customer satisfaction.

2. Safety Information

Always prioritize safety when working with automotive electrical systems. Failure to follow safety precautions can result in serious injury or damage to the vehicle.

  • Disconnect the vehicle's battery before beginning any work on the electrical system.
  • Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
  • Ensure the vehicle is securely supported on jack stands if working underneath.
  • Avoid contact with hot engine components.
  • If you are unsure about any step, consult a qualified automotive technician.

3. Package Contents

Upon opening the package, verify that all components are present and undamaged:

  • 1 x Rareelectrical 63A Alternator (Model 7122AN2)

4. Specifications

Alternator Specifications
Feature Detail
Brand Rareelectrical
Model Number 7122AN2
Unit Type DELCO style Alternator
Voltage 12 Volts
Amperage 63 Amps
Fan Type External
Regulator Type External
Item Weight 14 pounds (approx. 6.35 kg)
Product Dimensions 9 x 9 x 9 inches (approx. 22.86 x 22.86 x 22.86 cm)
OEM Part Numbers Replaced 1100623, 1102454, 1102455, 1102456, 1102458, 1102459, 1102463, 1102464, 1102943

Compatible Applications (GMC Van Models)

This alternator is compatible with a range of GMC Van models. Please verify your original unit's OEM part number to ensure correct fitment. A partial list of compatible applications includes:

  • GMC VAN G15/G1500 Van L6 3.8L 230CID (1967-1969)
  • GMC VAN G15/G1500 Van L6 4.1L 250CID (1967-1972)
  • GMC VAN G15/G1500 Van V8 5.0L 307CID (1968-1972)
  • GMC VAN G25/G2500 Van L6 3.8L 230CID (1967-1969)
  • GMC VAN G25/G2500 Van L6 4.1L 250CID (1967-1972)
  • GMC VAN G25/G2500 Van V8 5.0L 307CID (1968-1972)
  • GMC VAN G35/G3500 Van L6 4.1L 250CID (1971-1972)
  • GMC VAN G35/G3500 Van V8 5.0L 307CID (1970-1972)
  • GMC VAN P15/P1500 Van L6 3.8L 230CID (1967-1969)
  • GMC VAN P15/P1500 Van L6 4.1L 250CID (1968-1972)
  • GMC VAN P25/P2500 Van L6 4.1L 250CID (1966-1972)
  • And many more models. Always cross-reference with your vehicle's specific requirements.

5. Installation (Setup)

Installation of an alternator requires mechanical knowledge and experience with automotive electrical systems. If you are not confident in your ability to perform this installation safely and correctly, it is highly recommended to seek assistance from a certified mechanic.

General Installation Steps:

  1. Preparation: Ensure the vehicle is off, the parking brake is engaged, and the battery's negative terminal is disconnected.
  2. Access: Locate the existing alternator. Depending on the vehicle model, this may require removing other components (e.g., belts, hoses, air intake).
  3. Disconnect Wiring: Carefully disconnect all electrical connections from the old alternator. Note their positions for reinstallation.
  4. Remove Old Alternator: Loosen and remove the mounting bolts and tensioner, then carefully remove the old alternator from its bracket.
  5. Install New Alternator: Position the new Rareelectrical alternator into the bracket. Install the mounting bolts, but do not fully tighten them yet.
  6. Install Belt: Route the serpentine belt correctly around the alternator pulley and other pulleys. Adjust the belt tension according to your vehicle's specifications.
  7. Tighten Mounting Bolts: Once the belt tension is correct, fully tighten the alternator mounting bolts.
  8. Reconnect Wiring: Reconnect all electrical wires to the new alternator, ensuring secure connections.
  9. Reconnect Battery: Reconnect the negative terminal of the vehicle's battery.
  10. Test: Start the vehicle and check for proper charging system operation (e.g., battery light off, voltage meter reading appropriate levels).

Refer to your vehicle's specific service manual for detailed, model-specific installation instructions and torque specifications.

6. Operation

The alternator is a key component of your vehicle's charging system. Its primary function is to convert mechanical energy from the engine into electrical energy to power the vehicle's electrical systems and recharge the battery while the engine is running.

  • Once installed, the alternator operates automatically when the engine is running.
  • A properly functioning alternator should maintain the vehicle's system voltage within the manufacturer's specified range (typically 13.5V to 14.8V).
  • If the battery warning light illuminates on your dashboard, it may indicate an issue with the alternator or the charging system.

7. Maintenance

While alternators are generally low-maintenance components, periodic checks can help ensure their longevity and proper function:

  • Belt Inspection: Regularly check the serpentine belt for cracks, fraying, or excessive wear. Ensure it has the correct tension. A loose or worn belt can lead to insufficient charging.
  • Wiring Connections: Periodically inspect all electrical connections to the alternator for corrosion or looseness. Clean and tighten as necessary (with the battery disconnected).
  • Battery Health: A weak or failing battery can put undue strain on the alternator. Ensure your battery is in good condition and properly charged.
  • Cleanliness: Keep the alternator free from excessive dirt, oil, and debris, which can impede cooling and affect performance.

8. Troubleshooting

If you experience issues with your vehicle's charging system, consider the following common troubleshooting steps:

Common Troubleshooting
Symptom Possible Cause Solution
Battery warning light on dashboard Faulty alternator, loose/worn belt, wiring issue, weak battery Check belt tension and condition. Inspect wiring. Test battery and charging system voltage. Replace alternator if confirmed faulty.
Dim headlights or interior lights Insufficient charging from alternator, weak battery Test charging system output. Check battery condition.
Growling or whining noise from engine bay Worn alternator bearings, loose belt, misaligned pulley Inspect belt and pulleys. If noise persists, alternator may need replacement.
Battery not holding charge Alternator not charging, parasitic drain, faulty battery Test alternator output and battery health. Check for electrical drains.

If these steps do not resolve the issue, consult a professional automotive technician.

9. Warranty and Support

Rareelectrical products are manufactured to high standards. For warranty information or technical support, please refer to the documentation provided with your purchase or contact Rareelectrical customer service directly.

Contact Information:

  • Visit the official Rareelectrical website for support resources.
  • Refer to your purchase invoice for specific warranty terms and contact details.