6
Inspection/maintenance
Inspection/maintenance for the gear unit
Assembly and Operating Instructions – Explosion-Proof Gear Units
134
7. Re-insert and tighten the screw 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" (→
Checking the oil via the screw plug
Proceed as follows to check the oil of the gear unit:
1. Observe the information at the beginning of chapter
"
2. Remove a little oil at the oil screw plug.
3. 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" (→
4. Check the oil level. See previous chapter.
Changing the oil via the screw plug
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
"
2. Set up the gear unit in M5 or M6 mounting position. See chapter
136).
3. Place a container underneath the screw plug.
4. Remove the screw plugs on the A- and B-side of the gear unit.
5. Drain all the oil.
6. Re-insert the lower screw plug. Observe the tightening torques in chapter "Tighten-
7. Fill in fresh oil of the same type (contact
SEW‑EURODRIVE
if necessary) via the
upper screw plug. You must not mix different synthetic lubricants.
•
Fill the oil according to the quantity specified on the nameplate. See chapter
"Lubricant fill quantities" (→
188).
•
Check the oil level according to chapter "Checking the oil level via oil level
plug".
8. Re-insert the upper screw plug. Observe the tightening torques in chapter
"
24804134/EN – 05/2018