IMO 11/19
IMO-553 EN
7
4.3
Assembly
Prior to assembly, ensure that all components are clean
and undamaged.
NOTE: (Table 2) lists the recommended
Valv-Powr
lubricants.
1. Drive Shaft (60) Assembly, (Figures 8 & 9):
A Install the top and bottom shaft bearings (6, 7)and
o-rings (21, 22) onto the shaft (60).
B. Apply grease to the shaft bearings (6, 7), using
a general purpose grease listed in (Table 2).
Apply grease to the shaft o-rings (21,22) using the
recommended o-ring-area grease listed in (Table 2).
C. Partially Insert the shaft (60) into the body (50). Install
the octi-cam (1) onto the shaft in the orientation
shown in (Figure 9). The edges of the octi-cam (1)
should align with the edges of the square in the
bottom of the shaft (60). Insert the internal thrust
bearing (8) over the octi-cam (1). Fully insert the
shaft into the body (50).
D. Install the external thrust bearing (8), thrust washer
(10), and the spring clip (18).
2. Piston (40) Assembly, (Figures 10 through 13):
A. Install the piston o-ring seal (16) and the piston head
(15) and piston back (5) bearings.
B. Apply grease to the internal bore of the body (50)
using a recommended o-ring area grease listed in
(Table 2). Apply grease to the piston (40) rack teeth
using a recommended general purpose grease listed
in (Table 2).
60
50
Figure 10
C. Hold the body (50) in a horizontal position by
inserting the top of the shaft in a vice, or inserting
the bottom of the shaft connection into a male drive
fitted into a vice as shown by (Figure 10).
D. Ensure that the octi-cam (1) is in the correct position
with respect to the stop screw holes as shown by
(Figure 11).
Spring to Close or Clockwise to
Close for Double Actin
Close for Double Acting
Octi
Bottom Square
Orientation
-Cam
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Bottom Square
Orientation
-Cam
Spring to Open or Counterclockwise
to Open for Double Acting
Octi
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Figure 11 (Looking from above)
E. For standard-rotation assembly (clockwise to close)
rotate the body (50) 40 – 45° counterclockwise (if viewing
the bottom of the actuator), or clockwise (if viewing the
top of the actuator) as shown in (Figure 12).
A
A
40°- 45°
Figure 12
