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.
Piston & Rod Disassembly & Reassembly
2004 Acura 3.5RLSECTION Piston & Rod Disassembly & Reassembly
WARNING: This page is about a different car, the 2002 Acura MDX and 2001 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
- Apply engine oil to piston pin snap rings. Turn snap rings in grooves until end gaps line up with cutouts in pin bores. Carefully remove snap rings.
- Heat piston and rod assembly to approximately 158°F (70°C), then remove piston pin. Allow components to return to room temperature.
- Using a micrometer, measure piston pin diameter. Zero a dial indicator to piston pin diameter. Use dial indicator to check difference between piston pin diameter and piston pin hole diameter. Measure pin-to-connecting rod clearance. If any component measurement is outside service limits, replace as necessary. See PISTONS, PINS & RINGS table under ENGINE SPECIFICATIONS.
- Install one piston pin snap ring. Coat pin bore in piston and connecting rod with engine oil. Heat piston to approximately 158°F (70°C). Install piston pin. Assemble piston and connecting rod with embossed marks on same side. Install remaining snap ring.
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.