Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2005MARINER 2WD V6-3.0L VIN 1REPAIR AND DIAGNOSISRESTRAINTS AND SAFETY SYSTEMSAIR BAG SYSTEMSSERVICE AND REPAIRWELD NUT REPAIRSTRIPPED WELD NUT
2005 Mercury Mariner 2WD V6-3.0L VIN 1
Stripped Weld Nut
2005 Mercury Mariner 2WD V6-3.0L VIN 1SECTION Stripped Weld Nut
WELD NUT REPAIR - STRIPPED WELD NUT
1. Depower the system.
2. Remove the component from where the weld nut is to be repaired. Refer to the appropriate removal and installation procedure.
3. Inspect the weld nut and surrounding area for repair.
- If there is not enough clearance for a larger bolt stud to go through or a larger bolt head to turn, then a threaded insert will have to be installed. Follow the instructions with the thread insert repair kit.
4. If a 6-mmweld nut is stripped, drill out the hole using a letter "H" or 0.26-in (6.5-mm) drill bit. Then tap, using an 8 mm by 1.25 bit.
- Do not oversize a 6-mm weld nut by more than 8 mm.
5. If an 8-mm weld nut is stripped, drill the hole using a letter "R" or 0.3990 in (9.9 mm) drill bit. Then tap, using a 10 mm by 1.50bit.
- Do not oversize an 8-mm weld nut by more than 10 mm.
6. Obtain the appropriate oversized screw.
7. Install the attaching screw(s) to the component.
8. Tighten the attaching screws to specification.
1. Depower the system.
2. Remove the component from where the weld nut is to be repaired. Refer to the appropriate removal and installation procedure.
3. Inspect the weld nut and surrounding area for repair.
- If there is not enough clearance for a larger bolt stud to go through or a larger bolt head to turn, then a threaded insert will have to be installed. Follow the instructions with the thread insert repair kit.
4. If a 6-mmweld nut is stripped, drill out the hole using a letter "H" or 0.26-in (6.5-mm) drill bit. Then tap, using an 8 mm by 1.25 bit.
- Do not oversize a 6-mm weld nut by more than 8 mm.
5. If an 8-mm weld nut is stripped, drill the hole using a letter "R" or 0.3990 in (9.9 mm) drill bit. Then tap, using a 10 mm by 1.50bit.
- Do not oversize an 8-mm weld nut by more than 10 mm.
6. Obtain the appropriate oversized screw.
7. Install the attaching screw(s) to the component.
8. Tighten the attaching screws to specification.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.