Forward Flush

Fig 1: Connecting Transmission Oil Cooler Flusher To Oil Cooler Feed

Courtesy of GENERAL MOTORS CORP.

Disconnect both hoses (1 and 2) from the oil cooler pipes and connect them to the opposite oil cooler pipe. This will allow the oil cooler and pipes to be flushed in the normal flow direction.
Repeat Step 6 and 7 of the Back Flush.

Fig 2: Transmission Oil Cooler Flusher Water Supply Valve ON Position
Courtesy of GENERAL MOTORS CORP.
Release the trigger (1) of the J 35944-A and allow water only to rinse the oil cooler and pipes for 1 minute.
Turn the J 35944-A water supply valve (3) to the OFF position and turn OFF the water supply at the faucet.
Attach the shop air supply to the flushing system feed air valve (2) on the J 35944-A and blow out the water from the oil cooler and pipes. Continue, until no water comes out of the discharge hose.