TM 10-4610-237-123.5QUICKDISCONNECTCOUPLINGREPAIR.The following instructions are applicable to both female quick disconnect couplings and caps.This task consists of:a. Removalb. InstallationINITIAL SET-UP:Equipment Condition:Water system shut down (para. 2.9d)General Safety Instructions:WARNINGTo prevent injury to personnel, the water pump mustbe shut down and water pressure relieved fromdischarge hoses before disconnecting couplings. Capall open couplings to prevent water systemcontamination.Materials Required:Wiping Rag (Item 2, App. E) Determine gasketsrequired from the following table:Coupling SizeGasket1 1/2-inch(Item 1, App. I)2-inch(Item 2, App. I)4-inch(Item 3, App. I)NOTESRepair of a typical 4-inch female coupling and cap is shown. Repair of 2-inch and 1 1/2-inchcouplings and caps is similar.Replacement gaskets are supplied in the accessory kit.a.Removal. Refer to Figure 3-2.(1Disconnect female coupling (1) from water system (para. 2.7c).(2)Pull gasket (2) from interior of female coupling (1).b.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 ingasket material when gasket is properly installed.(4)Connect coupling (1) to water system (para. 2.7c).(5)Start up water system (para. 2.9c) and test coupling (1) for leaks.3-17
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