Emerson Bettis M18 - Page 22

April 2021
Installation, Operation and Maintenance Manual
VA-DC-000-1879 Rev. 0
18
Section 5: M18 Reassembly Instructions
M18 Reassembly Instructions
5.3.13 Install backup rings (20 - 20 - 70) and O-rings (20 - 20 - 60) onto pump
cylinder (20 - 10 - 20).
NOTE:
Refer to assembly drawing sheet 3 Detail D for correct location of these seals.
5.3.14 Install pump cylinder (20 - 10 - 20) onto manifold (20 - 10 - 10).
5.3.15 Install backup ring (20 - 20 - 50) and O-ring (20 - 20 - 40) onto cylinder
pin (20 - 10 - 60).
NOTE:
Refer to assembly drawing sheet 3 Detail C for correct location of these seals.
5.3.16 Insert cylinder pin (20 - 10 - 60) into manifold (20 - 10 - 10) and pump
cylinder (20 - 10 - 20).
5.3.17 Install retaining ring onto manifold (20 - 10 - 10).
5.3.18 Install position label (25 - 160) onto pump cover (25 - 140) using button head
screw (25 - 430) and hex nut (25 - 440).
NOTE:
The label for Spring-Return Actuators will be mounted with the two-position
(“AUTO” or “MANUAL”) side of the label facing outward. If the actuator is a Double-Acting
model then the three-position (“MANUAL CW”, “AUTO” and “MANUAL CCW”) side of the
label will be facing outward.
5.3.19 Install pump cover (25 - 140) onto manifold (20 - 10 - 10) using four screws (25 - 240).
5.3.20 Insert pump rod (20 - 10 - 50) into pump cylinder (20 - 10 - 20).
5.3.21 Install pump handle lever (20 - 10 - 90).
5.3.22 Retain pump handle lever (20 - 10 - 90) to pump rod (20 - 10 - 50) using quick
release pin (20 - 10 - 110).
NOTE:
The quick release pin can be installed in position 1, 2 or 3. Select position most appropriate
for “effort” desired.