6
Inspection/maintenance
Inspection/maintenance for the gear unit
Assembly and Operating Instructions – Explosion-Proof Gear Units
133
6.8.6
E: SPIROPLAN
®
W..37 / W..47 in mounting position M4 without oil level plug and cover plate
Checking the oil level via screw plug
The W37 / W47 gear units are not equipped with an oil level plug or a cover plate. This
is why the oil level is checked via the control bore.
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. Remove the screw plug.
4. Insert the dipstick vertically via the control bore all the way to the bottom of the
gear unit housing. Mark the point on the dipstick where it exits the gear unit. Pull
out the dipstick vertically (see following figure).
A
B
784447371
5. Determine the section "x" between the wetted part and the marking using a caliper
(see following figure).
X
9007200039761803
6. Compare the determined value "x" to the min. value depending on the mounting
position specified in the following table. Correct the fill level if required.
Oil level = section "x" in mm of the dipstick
Gear unit type
Mounting position during check
M5
Lying on the A-side
M6
Lying on the B-side
W37 in M4 mounting posi-
tion
37 ± 1
29 ± 1
W47 in M4 mounting posi-
tion
41 ± 1
30 ± 1
24804134/EN – 05/2018