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.

2003 Lincoln Aviator AWDFACTORY OEM SERVICE PROCEDURE

Disassembly And Assembly Of Subassemblies: Piston

Fig 1: Material Specifications

Courtesy of FORD MOTOR CO.

Remove the components in the order indicated in the following illustration.
To assemble, reverse the disassembly procedure.

Fig 2: Removal Sequence Of Piston
Courtesy of FORD MOTOR CO.

Items 9 and 10: Piston and Connecting Rod Assembly Note

NOTE: Connecting rod must be installed into the piston with identification markings toward the front.

Factory Service Tools

Use the Manual With the Right Hardware

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

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready Tools Compare Repair Quote Quote Shield Pro

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.