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3. Fill the gearbox with a 󹪞ushing oil, using a 󹪝lter (󹪝lter mesh max. 25 μm). For the 󹪞ushing oil,

use either the new oil or one that is compatible with the new oil and is less expensive.

4. Operate the gearbox for 15to30minutes under a low load.

5. Place a suitable and su󹪟ciently large receptacle underneath the oil drain plug.

6. Remove the oil drain plug. Drain all the oil into the receptacle.

7. After 󹪞ushing, immediately seal the gearbox using the sealing element.

8. Repeat this step for the second 󹪞ushing.

You have now 󹪞ushed the gearbox twice and can pour in the new oil.

12.3.24.9 Filling in oil

NOTICE

Mixing of di󹪜erent oils impairs the lubricity

When adding oil, use the same oil type and viscosity. If changing mutually incompatible oils,

see Flushing the gearbox (Page519).

Observe the symbols in the diagrams of theMounting positions (Page527):



Venting 

Procedure

1. Unscrew the vent plug.

2. Fill the gearbox with fresh oil. Use a 󹪝ller 󹪝lter with mesh of max.25μm.

3. Check the oil level.

4. Correct the oil level if necessary and check it again.

5. Check the state of the sealing ring on the sealing element. If the sealing ring is damaged,

replace the sealing element with a new one.

6. After 󹪝lling with oil, seal the gearbox immediately using the sealing element.

You have now 󹪝lled up the gearbox with oil.

12.3.24.10 Topping up with oil

If the mounting position of the gearbox is changed or oil lost because of leakage, check the oil

level. If you notice oil escaping, locate the leak, and seal the a󹪜ected area. Top up and check the

oil level.

At the time of going to print, the following types of oil are being used when the gearbox is

󹪝lled for the 󹪝rst time:

Additional information on the SIMOGEAR geared motor

12.3Speci󹪝c data gearbox

SINAMICS G115D Wall Mounted distributed drive

520 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA

Siemens SINAMICS G115D User Manual

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