6
Inspection/maintenance
Inspection/maintenance for the gear unit
Assembly and Operating Instructions – Explosion-Proof Gear Units
121
Ø oil level bore
Minimum fill level: Mark X at the oil dipstick
(see following figure)
mm
M33 × 2
4
M42 × 2
5
1,5
5
4
3
2
9007199273378699
5. If the oil level is too low, remove the breather valve and refill oil of the same type (if
necessary, contact SEW‑EURODRIVE) through the vent hole.
6. Re-insert the breather valve and the oil level plug. Observe for this the tightening
torques in chapter
"
Tightening torques for oil level plugs, oil drain plugs, screw
plugs, breather valves and oil sight glasses" (→
38).
Checking the oil via the oil drain plug
Proceed as follows to check the gear unit oil:
1. Observe the information at the beginning of chapter
"
2. Determine the position of the oil drain plug using the mounting position sheets.
See chapter "Mounting positions" (→
3. Remove a little oil from the oil drain plug.
4. Check the oil consistency:
•
Viscosity
•
If you can see that the oil is heavily contaminated, SEW‑EURODRIVE recom-
mends to change the oil even if this is outside the service intervals specified in
"Inspection and maintenance intervals" (→
5. Check the oil level. See chapter
"
Checking the oil level at the oil level
Changing the oil via the oil drain plug and the breather valve
WARNING
Risk of burns due to hot gear unit and hot gear unit oil.
Serious injuries.
•
Let the gear unit cool down before you start working on it. Due to the better flow-
ability, the gear unit oil should still be warm so that the gear unit can be drained
best.
1. Observe the information at the beginning of chapter
"
24804134/EN – 05/2018