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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1069 (POWER TRANSFER UNIT (PTU))IN-VEHICLE SERVICINGTRANSFER CASE VENTNOTES

2010 Mercury Mariner Hybrid, AWD

Transfer Case Vent: Notes

2010 Mercury Mariner Hybrid, AWDSECTION Notes

WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

Illustration	Tool Name	Tool Number
Courtesy of FORD MOTOR CO.	Installer, Vent Tube	308-584 or equivalent

General Equipment

Slide hammer with a 3-jaw puller attachment

Material

Item	Specification
Silicone Gasket and Sealant TA-30	WSE-M4G323-A4

Fig 1: Exploded View Of Transfer Case Vent

Courtesy of FORD MOTOR CO.

Item	Part Number	Description
1	7034	Vent

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.