Follow these instructions to keep the ATF cooler cleaner working properly:
Replace the two magnetic nonbypass spin-on filters after every 20 hours of use, based on the hour meter, or when you notice a restriction in the ATF flow.
Check the level and condition of the fluid in the tank before each use.
Replace the ATF in the tank when it looks dark or dirty.

ATF Cooler Cleaning (A/T)
Special Tools Required
ATF Cooler Cleaner GHTTTCF6H
Magnetic Nonbypass Spin-On Filter GTHGNBP2
*: Available through the Honda Tool and Equipment Program 888-424-6857.
Before installing an ...
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Shaft Assembly and Housing Installation (A/T)
Install the differential assembly in the torque converter housing.
Install the baffle plate.
Assemble the mainshaft, the countershaft, and the secondary shaft.
NO ...