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
97
7. Screw in the oil level plug again.
Checking the oil via the oil drain plug
Proceed as follows to check the gear unit oil:
1. Observe the notes in section "Information on gear unit inspection/mainte-
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 section "Checking the oil level via 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.
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. Determine the position of the oil drain plug, the oil level plug and the breather valve
using the mounting position sheets. See chapter "Mounting positions" (
3. Place a container underneath the oil drain plug.
4. Remove the oil level plug, the breather valve and the oil drain plug.
5. Drain the oil completely.
6. Re-insert the oil drain plug.
7. Fill in fresh oil of the same type (contact SEW
‑
EURODRIVE if necessary) via the
breather bore. Do not mix different synthetic lubricant.
• Observe the oil quantity according to the specifications on the nameplate or ac-
cording to the mounting position. See chapter "Lubricant fill quantities".
• Check the oil level at the oil level plug.
8. Re-insert the oil level plug and the breather valve.
21932786/EN – 05/2015