6
Inspection/maintenance
Inspection/maintenance for the gear unit
Assembly and Operating Instructions – Gear unit series R..7, F..7, K..7, K..9, S..7, SPIROPLAN
®
W
108
Oil level = wetted section x mm of the dipstick
Gear unit type
Mounting position during check
M5
Lying on the A-side
M6
Lying on the B-side
W47 in M4 mounting posi-
tion
41 ± 1
30 ± 1
7. Re-insert and tighten the screw plug.
Checking the oil via the screw plug
Proceed as follows to check the oil of the gear unit:
1. Observe the notes in chapter "Information on gear unit inspection/mainte-
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 section.
Changing the oil via the screw plug
WARNING
Risk of burns due to hot gear unit and hot gear unit oil.
Severe 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 notes in chapter "Information on gear unit inspection/mainte-
2. Set up the gear unit in M5 or M6 mounting position. See chapter "Mounting posi-
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 the oil completely.
6. Re-insert the lower screw plug.
7. Fill in fresh oil of the same type (contact SEW
‑
EURODRIVE if necessary) via the
upper screw plug. Do not mix different synthetic lubricants.
• For the required oil quantity, refer to the nameplate or chapter "Lubricant fill
quantities".
• Check the oil level according to chapter "Checking the oil level via oil level
plug".
8. Re-insert the upper screw plug.
21932786/EN – 05/2015