Emerson Bettis G Series - 2.6 M18 Pump Disassembly

December 2020
Installation, Operation and Maintenance Manual
VA-DC-000-1878 Rev. 0
14
Section 2: Actuator Disassembly
Actuator Disassembly
2.6 M18 Pump Disassembly
NOTE:
Refer to dwg. VA-ED-005-1120 for details.
!
WARNING
Disconnect operating pressure. If not already removed, disconnect all operating pressure
from actuator power cylinder.
2.6.1 Place the M18 pump control knob (25 - 200) in the auto position. Use dwg.
VA-ED-005-1120 for this Section.
NOTE:
Control knob (25 - 200) is in front and at the bottom of the M18 pump manifold
(20 - 10 - 10). Using a means of capturing the hydraulic uid that will be lost during the
following steps. Use a bucket, tub, or large container, etc.
2.6.2 Remove all the piping from the M18 override manifold (20 - 10 - 10) to the
actuator and reservoir (10).
2.6.3 Remove mounting bracket (30 - 90) from the actuator.
2.6.4 Remove all counter-sunk cap screws (30 - 100) from the mounting
bracket (30 - 90).
2.6.5 Remove acorn nut (25 - 450), lock washer (25 - 460), control knob (25 - 200) and
control pointer (25 - 150) from the M18 override.
2.6.6 Remove socket cap screws (25 - 240) from the cover (25 - 140).
NOTE:
Note the bottom two access holes to reach socket cap screws are blocked by instruction
tag (25 - 220) and will need to be removed and replaced (new instruction tag is provided in
service kit).
2.6.7 Pull out quick release pin (20 - 10 - 110) from the pump handle lever (20 - 10 - 90).
2.6.8 Remove socket head cap screws (20 - 10 - 100) from the back brace (20 - 10 - 130).
2.6.9 Remove pipe plug (20 - 10 - 210), spring (20 - 10 - 360) and ball (20 - 10 - 350).
If the back plate (20 - 10 - 320) is not coming out, use soft mallet to gently tap the
open end of stem, control valve (20 - 10 - 280) in order to remove the back plate
assembly and stem assembly.