370235 Checking and Topping Up ATF

WM 370235 Checking and topping up ATF

Technical values





Information

Test conditions with cooler lines closed

ATF cooler lines were not opened.

For example: during a general inspection, when replacing sealing rings or changing ATF filter.
- Warm up transmission in lower load range. Switch all transmission ranges several times while doing so.
- Read out the ATF temperature using the PIWIS Tester.
- ATF temperature: 35 - 45 °C.
- Selector lever is in position P.
- Press the brake pedal and shift the gear lever slowly through P-R-N-D three times. Hold the selector lever in each position for 2 seconds.
- Test and filling procedure at idle speed with air conditioning switched off.

Test conditions after opening cooler lines

ATF cooler lines were opened.

For example: when replacing the transmission, changing ATF, changing ATF lines, replacing ATF cooler, replacing ATF thermostat.
- Warm up transmission in lower load range. Switch all transmission ranges several times while doing so.
- Read out the ATF sump temperature using the PIWIS Tester.
- The ATF temperature must be 100 °C (cooling system open).
- Let ATF cool down to approx. 35 °C.
- Selector lever is in position P.
- Press the brake pedal and shift the gear lever slowly through P-R-N-D three times. Hold the selector lever in each position for 2 seconds.
- Test and filling procedure at idle speed with air conditioning switched off.

Preliminary work for ATF

1. Raise the vehicle to a horizontal position and secure it to prevent it from rolling away. -> 4X00IN Lifting the vehicle Service and Repair
2. Remove engine guard. -> 108019 Removing and installing engine guard - section on "Removing" 108019 Removing and installing engine guard

Checking ATF

1. Move selector lever to position P and start the engine.
2. Place oil collection pan underneath.

WARNING

Hot fluid

- Danger of scalding

-> Let the fluid cool down.
-> Wear personal protective gear.

Information

- For details of the next steps, read the test conditions specified under -> 370235 Checking and topping up ATF - section on "Information".

Information

- Always avoid oil leaks after unscrewing the oil inspection plug. This is caused by a certain amount of oil which remains on the screw in the lifting tube.

3. Unscrew oil inspection plug -1-.





ATF inspection plug

4. The oil level is correct when ATF is dripping continuously from the lifting tube. If this is not the case, add more ATF. -> 370235 Checking and topping up ATF - section on "Topping up"
5. Screw in oil inspection plug -1- with a new seal. => Tightening torque: 16 Nm (12 ftlb.)+/-1 Nm (+/-0.5 ftlb.)





ATF inspection plug

Topping up ATF

Information

- For details of the next steps, read the test conditions specified under -> 370235 Checking and topping up ATF - section on "Information".

Information

- Always avoid oil leaks after unscrewing the oil inspection plug. This is caused by a certain amount of oil which remains on the screw in the lifting tube.

1. Move selector lever to position P and start the engine.
2. Place oil collection pan underneath.

WARNING

Hot fluid

- Danger of scalding

-> Let the fluid cool down.
-> Wear personal protective gear.

Information

- For details of the next steps, read the test conditions specified under -> 370235 Checking and topping up ATF - section on "Information".

Information

- Always avoid oil leaks after unscrewing the oil inspection plug. This is caused by a certain amount of oil which remains on the screw in the lifting tube.

3. Unscrew oil inspection plug -1-.





ATF inspection plug

4. Screw adapter for filling ATF oil VAS 6262/2 into the ATF pan hand-tight.
5. Connect adapter for filling ATF oil VAS 6262A to the rapid-action coupling and fill in ATF.
6. Pull off adapter for filling ATF oil VAS 6262A at the rapid-action coupling and check to see if ATF emerges.
7. If no ATF emerges, fill in ATF until a constant discharge is visible at the lifting tube -2-.
8. Allow the ATF to drain for as long as required until the ATF is still only dripping continuously.
9. Screw in oil inspection plug -1- with a new seal. => Tightening torque: 16 Nm (12 ftlb.)+/-1 Nm (+/-0.5 ftlb.)





ATF inspection plug

Subsequent work for ATF

1. Install engine guard. -> 108019 Removing and installing engine guard - section on "Installing" 108019 Removing and installing engine guard