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
100
• Screw on the cover plate. Tighten the cover plate screw connections working
from the inside to the outside. Tighten the cover plate screw connections in the
sequence depicted in the following figure. Tighten the cover plate screw con-
nections with the specified tightening torque according to the following table.
Repeat the tightening procedure until the screws are properly tightened. To
avoid damaging the cover plate, use only impulse wrenches or torque wrench-
es. Do not use impact screwdrivers.
6
5
2
1
1
1
1
2
7
4
6
8
3
5
4
1
3
2
5
2
3
4
3
2
7
8
5
6
4
4
3
A
B
C
D
E
9007199273390731
Gear unit type
Figure
Retaining
thread
Tightening
torque T
N
Nm
Minimum tighten-
ing torque T
min
Nm
R/RF07
E
M5
6
4
R/RF17/27
D
M6
11
7
R/RF47/57
A
F27
B
W10
C
M5
6
4
W20
C
M6
11
7
W30
A
Checking the oil via cover plate
Proceed as follows to check the gear unit oil:
1. Observe the notes in chapter "Information on gear unit inspection/mainte-
2. Open the cover plate of the gear unit according to section "Checking the oil level
3. Take an oil sample via the cover plate opening.
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 cover
→
21932786/EN – 05/2015