3-5. QUICK DISCONNECT COUPLING REPAIR.
The following instructions are applicable to both female quick disconnect couplings and caps.
This task consists of
Equipment Condition :
Water system shutdown (para 2-12d)
Wiping rag (Item 2, App E)
Determine gaskets required from the following
General Safety Instructions:
To prevent injury to personnel, all water pumps must
(Item 1, App I)
be shutdown and water pressure relieved from
(Item 2, App I)
discharge hoses before disconnecting couplings Cap
(Item 3, App I)
or plug all open couplings to prevent water system
Item 4, App I)
Repair of a typical 4-inch female coupling and cap is shown . Repair of 2-inch, 1 1/2-inch and 1-
inch couplings and caps is similar.
Replacement gaskets are supplied in the accessory kit.
Removal. Refer to figure 3-2.
Disconnect female coupling (1) from water system (para 2-10c).
Pull gasket (2) from interior of female coupling (1).
Installation. Refer to figure 3-2.
(1) Using clean wiping rag, remove grit, sand, and dirt from gasket seat inside female coupling (1).
(2) Position replacement gasket (2) in female coupling (1).
(3) Press gasket (2) into gasket seat inside female coupling (1). There will be no ripples or bumps in gasket
material when gasket is properly installed.
Connect coupling (1) to water system (para 2-10c).
Start up water system (para 2-12c) and test coupling (1) for leaks.