Gear units – Manual with installation instructions
46 B 1000 en-3921
5.2.3 Checking the oil level
Section 7.1 "Versions and mounting position"describes the mounting positions and the corresponding
oil level screws. With double gear units, the oil level must be checked on both units. The pressure vent
must be at the position marked in Section 7.1 "Versions and mounting position".
The oil level does not need to be checked on gear units without oil level screw (see chapter 7.1
"Versions and mounting position").
Gear unit types that are not supplied with an oil filling must be filled before the oil level is checked.
The oil level must only be carried out when the gear unit is at a standstill and has cooled down.
Provide protection against accidental activation. Check the oil level with an oil temperature of between
10 °C to 40 °C.
Gear units with oil level screw
1. Unscrew the oil level screw corresponding to the mounting position (see chapter 7.1 "Versions and
mounting position").
Information
At the first oil level check a small amount of oil may escape, as the oil level may be above the lower
edge of the oil level hole.
2. The correct oil level is at the lower edge of the oil level hole. If the oil level is too low, adjust the oil
level with the corresponding oil type.
3. Screw the oil level screw and all previously loosened screw connectors back in correctly.
Gear units with an oil level tank
Figure 26: Checking the oil level with a dipstick
1. Screw the screw plug with dipstick (thread G1¼) out of the oil level container.
2. The oil level must be between the upper and lower marking when the dipstick is fully screwed in
(see Figure 26). If the oil level is too low, adjust the oil level with the corresponding oil type.
3. Screw the screw plug with dipstick and all previously loosened screw connectors back in correctly.
Gear units with oil inspection glass
1. The oil level can be seen directly in the window.
2. The correct oil level is:
– Maximum: the middle of the oil inspection glass,
– Minimum: Lower edge of the oil inspection glass.
3. If the oil level is not correct, adjust the oil level by draining off oil or topping up with the type of oil
stated on the name plate.
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