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 Infiniti M37 BaseFACTORY OEM SERVICE PROCEDURE
Component Description
| Name of the Part (Abbreviation) | Function |
|---|---|
| Front brake (FR/B) | Fastens the under drive carrier. |
| Input clutch (I/C) | Connects the input shaft, the mid internal gear and the rear carrier. |
| Direct clutch (D/C) | Connects the rear carrier and the rear sun gear. |
| High and low reverse clutch (HLR/C) | Connects the rear sun gear and the mid sun gear. |
| Reverse brake (R/B) | Fastens the rear carrier. |
| Low brake (L/B) | Fastens the mid sun gear. |
| 2346 brake (2346/B) | Fastens the under drive sun gear. |
| 1st one-way clutch (1st OWC) | Allows the under drive carrier to turn freely in the forward direction but fastens it for reverse rotation. |
| 2nd one-way clutch (2nd OWC) | Allows the rear sun gear to turn freely in the forward direction but fastens it for reverse rotation. |
| Torque converter | Amplifies driving force the engine, and transmits it to transmission input shaft. |
| Oil pump | Driven by the engine, oil pump supplies oil to torque converter, control valve assembly, and each lubricating system. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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