3-6. COMPONENT REPLACEMENT (COUPLING CLAMPS).
Removal of defective components from the assembled water system is accomplished by removing the coupling
clamp at both ends of the component and removing the defective item Installation of replacement components
is performed by positioning the new component in the water system and installing coupling clamps at both ends
of the component.
This task consists of a. Removal
Water system shutdown (para 2-13d)
General Safety Instructions:
Hammer (Item 5, App B)
To prevent injury to personnel, all water pumps must
Punch (Item 6, App B)
be shutdown and water pressure relieved from
Assembly Tool (Accessory Kit)
discharge hoses before disconnecting coupling
coupling clamps. Cap all open couplings to prevent
Lubricant (Item 3, App E)
water system contamination.
Replacement of a typical 6-inch butterfly valve is shown. Replacement of all water system
components with grooved pipe couplings is similar.
Removal. Refer to figure 3-4.
Install assembly tool (1) on coupling clamp (2) . Push assembly tool handle to the closed
Using a punch and hammer, drive out locking pin (3) from coupling clamp (2).
Pull handle of assembly tool (1) away from coupling clamp (2) and remove tool.
Open and remove coupling clamp (2) from hose (4) and butterfly valve (5).
Separate hose (4) from butterfly valve (5) and remove coupling gasket (6).
Repeat steps (1) through (5) for coupling clamp (7).
Remove defective butterfly valve (5) from water system.