How to Change the Transmission Oil on a BMW R1150RT

Written by matt scheer
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The R1150RT is a motorcycle produced by BMW. Like every motorcycle, it requires periodic maintenance, which includes changing the transmission oil every 50,000 to 60,000 miles. The oil lubricates the gears and ensures smooth shifting. To change the transmission fluid, the casing on the side of the engine must be removed. This is a simple procedure if you have the proper tools. Changing the transmission oil takes approximately 45 minutes to complete.

Skill level:

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Things you need

  • Bike stand
  • Phillips-head screwdriver
  • 10mm socket wrench
  • Fluid pump

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  1. 1

    Place the motorcycle in a bike stand so it will remain upright while you are changing the transmission oil.

  2. 2

    Remove the 10 Phillips-head screws holding the casing onto the engine at the front of the bike. Put the casing and screws aside for later reassembly.

  3. 3

    Locate the transmission on the right side of the engine. Remove the drain bolt in the centre of the transmission using a 10mm socket wrench.

  4. 4

    Place the clear hose of the fluid pump into the opening where you just removed the drain bolt. Pump the handle of the fluid pump to suction the old transmission oil from the tank. Continue draining the oil until the fluid pump contains 1.5 quarts. Empty the old transmission oil out of the fluid pump tank into a collection pan.

  5. 5

    Fill the fluid pump's tank with fresh transmission oil. Place the plastic tube into the drain opening. Push the plastic tab on the clear tube down to make the pump deliver fluid rather than remove it. Pump the handle on the fluid pump until transmission oil begins to overflow from the drain hole on the bike.

  6. 6

    Refasten the drain bolt and reinstall the engine casing.

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