Mazda 3 Service Manual: Oil Cooler Flushing [FS5 A EL]

NOTE:

• If the automatic transaxle is replaced, flush and inspect the oil cooler.

• When replacing the automatic transaxle, inspect the oil cooler together with flushing it using the following procedures, and with the oil cooler hose removed.

1. Disconnect the oil hose.

2. Set a clean oil pan up to the oil hose inlet.

3. Blow 491—882 kPa {5—9 kgf/cm2, 72—127 psi} of compressed air into the oil hose outlet to drain remaining oil.

4. Add new ATF from the oil cooler hose outlet and blow 491—882 kPa {5—9 kgf/cm2, 72—127 psi} of compressed air to flush. (Repeat 2 or 3 times)

5. Verify that none of the following foreign material is mixed in with the drained ATF:

• Large metal fragments of φ 0.5 mm {0.02 mm} or more that cannot pass through the oil strainer

• Fibrous clutch facing

6. Repeat the procedures from Step 4 and flush the inside of the oil cooler.

• If foreign material such as metal fragments or clutch facing remains even after the oil cooler is flushed repeatedly, replace the oil cooler.