3-5. QUICK DISCONNECT COUPLING REPAIR.
The following instructions are applicable to both female quick disconnect couplings and caps.
This task consists of a. Removal
Water system shutdown (para 2-13d)
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
or plug all open couplings to prevent water system
Repair of a typical 4-inch female coupling and cap is shown Repair of 2-inch couplings and
caps is similar.
Replacement gaskets are supplied in the accessory kit.
Removal. Refer to figure 3-3.
Disconnect female coupling (1) from water system (para 2-11d).
Pull gasket (2) from interior of female coupling (1).
Installation. Refer to figure 3-3.
Using clean wiping rag, remove grit, sand, and dirt from gasket seat inside female coupling (1).
Position replacement gasket (2) in female coupling (1).
Press gasket (2) into gasket seat inside female coupling (I) There will be no ripples or bumps in
gasket material when gasket is properly installed.
Connect female coupling (1) to water system (para. 2-1 Id).
Startup water system (para 2-13c) and test female coupling (1) for leaks.