Emerson Bettis M18 Installation, Operation And Maintenance Manual page 18

Section 4: M18 Disassembly Instructions
April 2021
4.3.8
4.3.9
4.3.10 Remove two orifice check valves (20 - 10 - 260) from the manifold (2 - 10 - 10).
4.3.11 Refer to assembly drawing sheet 1. Remove two check valves (20 - 10 - 40) and one
4.3.12 Remove the relief valve (20 - 10 - 30) from bottom of the M18 manifold (20 - 10 -10).
NOTE:
There will be further fluid lost when the valves are removed.
NOTE:
In step 4.3.13 and 4.3.17 pump handle lever (20 - 10 - 90), pump rod (20 - 10 - 50), and
associated parts will be removed from pump cylinder (20 - 10 - 20).
4.3.13 Remove quick release pin (20 - 10 - 110) from pump handle lever (20 - 10 - 90) and
4.3.14 Pull the pump rod (20 - 10 - 50) up out of the pump cylinder (20 - 10 - 20) using a
4.3.15 Refer to assembly drawing sheet 3. Remove retainer ring (20 - 10 - 80) from the
4.3.16 Pull the cylinder pin (20 - 10 - 60) out of from the manifold (20 - 10 - 10) using a
4.3.17 Remove the cylinder (20 - 10 - 20) from the manifold (20 - 10 - 10).
NOTE:
If the M18 pump is equipped with Auto Reset then do steps 4.3.18 and 4.3.19 and refer to
assembly drawing sheet 6. If not equipped with Auto Reset skip steps 4.3.18 and 4.3.19.
4.3.18 Remove one retainer ring (80 - 80) from auto reset pivot pin (80 - 70) located on
4.3.19 Remove air reset cylinder (80 - 90) from auto reset pivot pin (80 - 70) located on
4.3.20 Remove the button head screw (25 - 430) and hex nut (25 - 440) from the position
4.3.21 Remove position label (25 - 160) from the pump cover (25 - 140).
NOTE:
4.3.20 and 4.3.21 Steps only required if converting from DA to SR, and vice versa.
14
Remove acorn nut (25 - 450) from the control knob (25 - 200) and separate the
control knob (25 - 200) from valve stem (20 - 10 - 280).
Refer to assembly drawing sheet 3. Remove four cap screws (25 - 240) from pump
cover (25 - 240) and detach the cover from manifold (20 - 10 - 10).
check valve (20 - 10 - 270) from the manifold (20 - 10 - 10).
pump rod (20 - 10 - 50).
slight twisting back and forth motion.
manifold (20 - 10 -10).
1/4" - 20 UNC screw.
the pump cover (25 - 140).
the pump cover (25 - 140).
label (25 - 160).
Installation, Operation and Maintenance Manual
VA-DC-000-1879 Rev. 0
M18 Disassembly Instructions