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Home >> Infiniti >> 2012 >> EX35 Base, AWD >> Repair and Diagnosis >> Transmission >> Automatic Transmission >> Unit Disassembly And Assembly >> Transmission Assembly >> Inspection >> Inspection After Disassembly

Inspection After Disassembly

Oil Pan

Check foreign materials in oil pan to help determine causes of malfunction. If the ATF is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.

Fig 1: Checking Foreign Materials In Oil Pan
G04875910Courtesy of NISSAN NORTH AMERICA, INC.

Torque Converter

Check torque converter one-way clutch using a check tool as shown in the figure.

  1. Insert a check tool into the groove of bearing support built into one-way clutch outer race.
  2. When fixing bearing support with a check tool, rotate one-way clutch spline using a screwdriver.
  3. Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
Fig 2: Checking Torque Converter One-Way Clutch
G04876018Courtesy of NISSAN NORTH AMERICA, INC.

1st One-way Clutch

Check operation of 1st one-way clutch.

  1. Install 1st one-way clutch (1) to front brake hub (with under drive carrier).
  2. Hold 1st one-way clutch.
  3. Check front brake hub for correct locking and unlocking directions. If necessary, replace 1st one-way clutch.
Fig 3: Identifying One-Way Clutch
G08197387Courtesy of NISSAN NORTH AMERICA, INC.

Under Drive Sun Gear

Check for deformation, fatigue or damage. If necessary, replace the under drive sun gear.

Mid Carrier Assembly

Check for deformation, fatigue or damage. If necessary, replace the mid carrier assembly.

Rear Carrier Assembly

Check for deformation, fatigue or damage. If necessary, replace the rear carrier assembly.

Reverse Brake Drive Plates

Check facing for burns, cracks or damage. If necessary, replace the plate.

Reverse Brake Retaining Plate, Driven Plates and Dish Plates

Check facing for burns, cracks or damage. If necessary, replace the plate.

Each Snap Ring

Check for deformation, fatigue or damage. If necessary, replace the snap ring.

Parking Actuator Support and Parking Pawl

If the contact surface on parking actuator support (1) and parking pawl (2) has excessive wear, abrasion, bend or any other damage, replace the components.

Fig 4: Locating Parking Actuator Support And Parking Pawl Wear Portion
G05218677Courtesy of NISSAN NORTH AMERICA, INC.