April 2021
Installation, Operation and Maintenance Manual
VA-DC-000-1879 Rev. 0
14
Section 4: M18 Disassembly Instructions
M18 Disassembly Instructions
4.3.8
Remove acorn nut (25 - 450) from the control knob (25 - 200) and separate the
control knob (25 - 200) from valve stem (20 - 10 - 280).
4.3.9
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).
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
check valve (20 - 10 - 270) from the manifold (20 - 10 - 10).
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
pump rod (20 - 10 - 50).
4.3.14
Pull the pump rod (20 - 10 - 50) up out of the pump cylinder (20 - 10 - 20) using a
slight twisting back and forth motion.
4.3.15
Refer to assembly drawing sheet 3. Remove retainer ring (20 - 10 - 80) from the
manifold (20 - 10 -10).
4.3.16
Pull the cylinder pin (20 - 10 - 60) out of from the manifold (20 - 10 - 10) using a
1/4” - 20 UNC screw.
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
the pump cover (25 - 140).
4.3.19
Remove air reset cylinder (80 - 90) from auto reset pivot pin (80 - 70) located on
the pump cover (25 - 140).
4.3.20
Remove the button head screw (25 - 430) and hex nut (25 - 440) from the position
label (25 - 160).
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.
