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 Infiniti M45FACTORY OEM SERVICE PROCEDURE

Repair For Component Parts: Disassembly: Notes

Using a flat-bladed screwdriver, remove snap ring from front sun gear.

Fig 1: Removing Snap Ring From Front Sun Gear
Courtesy of NISSAN MOTOR CO., U.S.A.
Remove 3rd one-way clutch from front sun gear.

Fig 2: Removing 3rd One-Way Clutch From Sun Gear
Courtesy of NISSAN MOTOR CO., U.S.A.

Remove front carrier assembly from rear internal gear.

Fig 1: Removing Front Carrier Assembly From Rear Internal Gear
Courtesy of NISSAN MOTOR CO., U.S.A.
1. Remove bearing race from front carrier.
  
  Fig 2: Removing Bearing Race From Front Carrier
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Remove needle bearing from front carrier.
  
  Fig 3: Removing Needle Bearing From Front Carrier
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Remove snap ring from front carrier.
  
  Fig 4: Removing Snap Ring From Front Carrier
  Courtesy of NISSAN MOTOR CO., U.S.A.
Remove input clutch assembly from rear internal gear.
1. Remove O-ring and seal rings from input clutch assembly.
  
  Fig 5: Removing O-Ring & Seal Rings From Input Clutch Assembly
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Remove needle bearing from input clutch assembly.
  
  Fig 6: Removing Needle Bearing From Input Clutch Assembly
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Using a flat-bladed screwdriver, remove snap ring from input clutch drum.
  
  Fig 7: Removing Snap Ring From Input Clutch Drum
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Remove drive plate, driven plate and retaining plate from input clutch drum.

Factory Service Tools

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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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