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 MANUALSMERCURY2010MOUNTAINEER 4WD V8-4.6LREPAIR AND DIAGNOSISMAINTENANCEWHEELS AND TIRESTESTING AND INSPECTIONPINPOINT TESTSPINPOINT TEST A: INNER EDGE/SHOULDER WEAR
2010 Mercury Mountaineer 4WD V8-4.6L
Pinpoint Test A: Inner Edge/Shoulder Wear
2010 Mercury Mountaineer 4WD V8-4.6LSECTION Pinpoint Test A: Inner Edge/Shoulder Wear
Wheels And Tires
Pinpoint Tests
For a description of the various tire wear patterns, refer to Inspection and Verification. Inspection And Verification
Pinpoint Test A: Inner Edge/Shoulder Wear
This pinpoint test is intended to diagnose the following:
- Excessive toe out
- Incorrect wheel and tire rotation
PINPOINT TEST A: INNER EDGE/SHOULDER WEAR
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A1 MEASURE THE TREAD DEPTH
- Using a tread depth gauge or similar tool, measure the inside edge/shoulder tread depth.
- Is the tread depth greater than 2/32 inch?
Yes
ROTATE the wheel and tire assemblies.
CHECK and ADJUST the toe to nominal +0.15 degrees (toe in). CHECK and ADJUST caster and camber to nominal. REFER to Suspension &/or Alignment.
No
INSTALL a new tire(s). CHECK and ADJUST the toe to nominal. CHECK and ADJUST caster and camber to nominal. REFER to Suspension &/or Alignment.
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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.