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 DIAGNOSISBODY AND FRAMEDESCRIPTION AND OPERATIONFRAME AND BODY MOUNTING
2010 Mercury Mountaineer 4WD V8-4.6L
Frame and Body Mounting
2010 Mercury Mountaineer 4WD V8-4.6LSECTION Frame and Body Mounting
Frame and Body Mounting
The frame consists of 2 steel-channel rails, 10 crossmembers for Explorer Sport Trac or 8 crossmembers for Explorer/Mountaineer including a front crossmember, transmission support crossmember and a rear crossmember (trailer hitch). New side rails and welded crossmembers, including the trailer hitch, are not installed separately. A front frame rail repair kit is available if the front rail is to be repaired and a rear crossmember (hitch) repair kit is available if the rear crossmember or rail is to be repaired.
The 1B crossmember and transmission crossmember are included in assembly to the frame, but can be serviced separately. For any frame repair, refer to Frame.
Frame-Mounted Heat Shields
The frame-mounted heat shields are attached to the top of the frame and crossmembers with bolts. The body must be lifted off the frame enough for access to the bolts that attach the heat shields to the top of the frame.
Structural Enhancement - Explorer
NOTE: Portions of the frame are removed from this drawing to show the location of the inserts.
Structural Enhancement - Explorer Sport Trac
The purpose of these inserts is to enhance the structural rigidity of the frame in this area. Inserts cannot be repaired or installed new.
NOTICE: When removing upper body mounts, enough adjacent body mount support bolts and nuts must be removed to prevent damage occurring to the vehicle.
NOTE: Body mounts must be held with a wrench on the bottom while loosening the bolt from the top.
NOTE: Do not reuse body support mounting fasteners. New fasteners must be installed for each fastener that has been removed or loosened.
NOTE: No lubricants of any kind are to be used during body mount support installation.
Body Support - Front End Sheet Metal (FESM)
Body Support - No. 1
Body Support - No. 2
Body Support - No. 3
NOTE: Explorer/Mountaineer only.
Body Support - No. 3
NOTE: Explorer Sport Trac only.
Body Support - No. 4
NOTE: Explorer/Mountaineer only.
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.