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.
2012 Mazda CX-9 AWD V6-3.7LFACTORY OEM SERVICE PROCEDURE
Timing Component Alignment Marks: Locations
Timing Component Alignment Marks
LH
RH
NOTE:
Of the four marked locations on the timing chain, align the mark that has a different color to the variable valve timing actuator (RH) side timing mark.
If the timing marks on the timing chain are not evident, place timing marks on the timing chain using an indelible ink marker.
NOTE:
- The marked external links are not included in the count.
- When marking the variable valve timing actuator (RH) side timing chain (No.3), change the mark color.
The number of external links
- No.1-2 : 35
- No.2-3 : 48
- No.3-1 : 40
Place alignment marks on the timing chain corresponding to each of the alignment marks on the timing sprocket.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.