AW55-50/51SN Transmission

Oil, changing

Note: Use only ATF oil, Volvo P/N 1161540-8 (1 liter container), 1161640-6 (4 liter container) may be used

Warning! Avoid skin contact with transmission fluid. the oil may be very hot if the car has just been driven

Conditions

The oil should be replaced only in the two following instances:
- Where diagnostic trouble code (DTC) TCM 0042 and TCM 0046 are stored, in which case the diagnostic function activates the warning lamp in the following circumstances.
The transmission control module (TCM) receives data about the operating temperature of the transmission fluid while the car is being driven. TCM 0042 is stored after an accumulated amount of time.
Diagnostic trouble code (DTC) TCM 0046 is stored if the transmission fluid temperature exceeds 150°C for more then two minutes.

- In cars used in continuous taxi service or used for towing a trailer or caravan for most of its mileage, the oil must be replaced at a service interval of 75000km ±5000km. This is to conform to the regular service program

Warning! Avoid skin contact with transmission fluid. the oil may be very hot if the car has just been driven

Draining

Remove




- the splash guard under engine (certain versions)
- oil plug. Drain oil from the transmission.

Installing oil plug
- Use a new gasket
- Tighten plug. Tighten to 40 Nm
- Install the protective cover (certain versions)

Preparing to flush the transmission





- Remove the battery and the battery shelf.
- Remove the return hose on the control system cover.
- Install a plastic plug in the connection on the cover.
- Install a transparent plastic hose on the oil return hose connection.
- Place a container beneath the hose to catch the oil.
- Temporarily reinstall the battery shelf and the battery.

Filling with oil
- Apply parking brake and move gear selector lever to position P
- Fill with approximately 2 liters of oil.
- Start the engine and let it idle
- Turn the engine off when air bubbles start to become visible in the hose.
- Add approximately 2 liters of oil.
- Start the engine again and let it idle
- Turn the engine off when air bubbles start to become visible in the hose.
- Remove the battery and the battery shelf.
- Remove the hose from the connection.
- Install the return hose on transmission cover.
- Install the battery shelf and the battery.

Further filling
- Fill with approximately 2 liters of oil.
- Set parking brake
- Start engine and let it idle. Move the gear selector through all positions, stopping in each position for 4-5 seconds.

Checking the oil level
- Refer to Checking Oil Level Testing and Inspection
The oil capacity of the transmission is 7.1 ±0.10 liters (MAX, MIN).

Note: After replacing the transmission oil, the "Transmission oil change" counter must be reset.