Gear units – Manual with installation instructions
38 B 1000 en-3921
3.14 Installation of an oil expansion chamber (Option: OA)
3.14.1 Installation of the sizes I, II and III
The oil expansion chamber is available in 3 sizes with different capacities:
• 0.7 l (Size I)
• 2.7 l (Size II)
• 5.4 l (Size III)
The oil expansion chamber must be mounted vertically with the hose connection facing downwards
and the vent screw facing upwards. Taking the hose length into account, the container should be fitted
as high as possible. Suggestions for the position of the oil expansion chamber see the following
illustration.
Figure 18: Position of the oil expansion chamber
1. After installing the gear unit, remove the vent screw.
2. Screw in the reduction or extension with the existing sealing ring.
3. If the fastening screw is screwed into a through hole, seal the thread with a medium strength screw
securing material such as LOXEAL 54-03 or Loctite 242.
4. Screw on the expansion tank. If the necessary screw insertion depth of 1.5 × d can no longer be
achieved, use a 5 mm longer screw. If a longer screw cannot be fitted, use a stud and a nut with
appropriate dimensions.
5. Attach the vent hose with the enclosed hollow screws and seals.
6. Screw the enclosed M12 x 1.5 vent plug and sealing ring into the tank.
3.14.2 Installation of sizes 0A and 0B
The oil expansion chamber must be mounted vertically with the hose connection facing downwards
and the vent screw facing upwards. Taking the hose length into account, the container should be fitted
as high as possible. Suggestions for the position of the oil expansion chamber see Figure 18. Note
that with the M4 configuration with terminal box position in position 2, it is not possible to install the oil
expansion chamber.
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