TM 10-4320-303-13
4.11.4 Pressure-Reducing Valve Assembly Replacement.
This task covers:
4.11.4.1 Removal
4.11.4.2 Inspection
4.11.4.3 Installation
INITIAL SETUP
Tools
General Safety Instructions
Tool Kit, General Mechanic's,
Do not work on equipment without following
Automotive, Section III, Item 1,
standard shop safety precautions.
Appendix B
Equipment Conditions
Pumping station shutdown, refer to
applicable technical manual.
4.11.4.1 Removal.
Figure 4-9. Pressure-Reducing Valve Assembly Replacement.
a. Remove grooved-end pipe quick disconnect coupling clamp (Figure 4-9, 1) from downline 6 inch x
500 foot collapsible hose assembly (2) and pressure-reducing valve assembly (3).
b. Remove grooved-end pipe quick disconnect coupling clamp (4) from pressure relief valve assembly
(5) and pressure-reducing valve assembly (3).
c. Remove pressure-reducing valve assembly (3).
4.11.4.2 Inspection.
a. Inspect pressure-reducing valve assembly (3) for leaks, cracks, holes, missing components, or
damage.
b. Replace damaged or defective pressure-reducing valve assembly (3).
4.11.4.2 Installation.
a. Align pressure relief valve assembly (5) and pressure-reducing valve assembly (3).
4-26
