Alternator: Service and Repair

2010 Mercury Mariner 2WD V6-3.0LSECTION Service and Repair



Generator - 3.0L









Removal and Installation

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Vehicle Jacking and Lifting.

2. NOTICE: Do not allow any metal object to come in contact with the generator housing and internal diode cooling fins. A short circuit may result and burn out the diodes. Failure to follow this instruction may result in component damage.

Disconnect the battery.

3. Remove the 5 RH lower splash shield bolts and the 1 pin-type retainer.
- To install, tighten to 8 Nm (71 lb-in).

4. Remove the RH lower splash shield.

5. Rotate the Front End Accessory Drive (FEAD) tensioner counterclockwise and position the accessory drive belt aside.

6. Disconnect the generator electrical connector.

7. Position the generator B+ protective cover aside and remove the generator B+ terminal nut.
- To install, tighten to 17 Nm (150 lb-in).

8. Remove the 3 A/C compressor bolts. Use a tie-strap and position the A/C compressor aside.
- To install, tighten to 25 Nm (18 lb-ft).

9. Loosen the 2 generator nuts.
- To install, tighten to 47 Nm (35 lb-ft).

10. Remove the 2 lower generator studs.
- To install, tighten to 7 Nm (62 lb-in).

11. Remove the upper generator bolt and the generator.
- To install, tighten to 47 Nm (35 lb-ft).

12. To install, reverse the removal procedure.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.