Oil Cooler Flushing & Flow Check: Preparation

1. After the repair or replacement transmission is installed in the vehicle, DO NOT reconnect the oil cooler pipes.
2. Remove the fill cap (9) on the Transmission Oil Cooler and Line Flusher (J-35944-A) and fill the flusher tank (4) with 20-21 oz. (0.6L) of flushing solution using the measuring cup (6). DO NOT overfill. See Fig 1.
3. Install the fill cap (9) on the flusher and pressurize the flusher tank (4) to 80-100 psi (550-700 kPa), using the shop air supply at the tank air valve (2).
4. With the water supply valve (1) on the flusher in the OFF position, connect the water supply hose (7) from the flusher to the water supply at the faucet. See Fig 1.
5. Turn on the water supply at the faucet.

Fig 1: Identifying Flushing Equipment

Courtesy of GENERAL MOTORS CORP.