Inspection After Removal

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

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.

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- If frictional material is detected, perform A/T fluid cooler cleaning. Refer to A/T Fluid Cooler Cleaning .
Check torque converter one-way clutch using a check tool as shown at figure.

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Insert a check tool into the groove of bearing support built into one-way clutch outer race.
When fixing bearing support with a check tool, rotate one-way clutch spline using a screwdriver.
Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.