B Clutch Function

WARNING: This page is about a different variant/trim than selected.

845RE, 8HP45, 8HP70 and 8HP90

NOTE:

An audible hiss may be heard when testing this clutch as the seal is designed to allow fluid/air to pass.

Apply air pressure to the feed hole located on the test plate marked B1 , listen for an audible thud from the B Clutch piston.
To release the B Clutch Piston, apply air pressure to the feed hole on the test plate marked B2 , listen for the B Clutch piston to return.

850RE, 8HP50, 8HP75 and 8HP95

NOTE:

An audible hiss may be heard when testing this clutch as the seal is designed to allow fluid/air to pass.

Apply air pressure to the feed hole located on the test plate marked B1 , listen for an audible thud from the B Clutch piston.
When air pressure is released, the B Clutch return spring will return the piston. The feed hole of the test plate marked B2 is NOT used for these transmissions.