WTR Series
Operation
L120 Installation & Maintenance Manual 120-11000 A
Manual Operation
Piece numbers refer to Figure 10.
Counterclockwise rotation of the Declutch Lever (piece #9) causes the declutch actuator
to lift the clutch sleeve out of engagement with the worm gear. Drive lugs on top of the
clutch sleeve engage matching lugs in the Handwheel Adapter (piece #26) and then latches
engage the clutch sleeve in this position. The actuator is now in the handwheel driving
option. Energizing the motor at this point will cause the latches to drop out and the spring
loaded clutch sleeve re-engages with the lugs on the worm gear. The actuator is once more in
motor operation.
NOTE: The shift from manual operation to motor operation is automatic and does not
require external positioning of the declutch shaft.
Figure 10 (one of two) – L120-10 through 40 drive sleeve and housing cover parts breakdown
17
25
23
44
29
50
18
17
42
28
27
43
26
24
19
20
21
22
16
Piece Quantity Description
16 1 Ball Bearing
17 1 Ball Bearing
18 1 Drive Sleeve Bevel Gear
19 1 H.W. Clutch Sleeve
20 1 Worm Gear Lug Ring
21 1 Worm Gear
22 1 Spirolox Retainer
23 1 Key
24 1 Declutch Spring
25 1 Drive Sleeve
26 1 Handwheel AdapterPiece
27 1 Housing Cover
28 1 Retaining Ring
29 1 Handwheel
33 1* Handwheel Cover Plat
34 1* H.W. Cover Plate Gasket
42 1 Seal Kit
43 1 Quad Ring
44 1 Quad Ring
50 A/R Hardware
* Not shown
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