TM 10-4610-237-12
Section III. OPERATOR MAINTENANCE PROCEDURES
3.4
COMPONENT REPLACEMENT.
Removal of defective components from the assembled water system is accomplished by disconnecting the couplings 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 connecting the couplings at both ends of the component.
This task consists of:
a. Removal
b. Installation
INITIAL SET-UP:
General Safety Instructions:
Equipment Condition:
Water system shut down (para. 2.9d)
WARNING
To prevent injury to personnel, the water pump must
be shut down and water pressure relieved from
discharge hoses before disconnecting couplings. Cap
all open couplings to prevent water system
contamination.
NOTE
Replacement of a typical 2-inch gate valve is shown. Replacement
of all water system components is similar.
a.
Removal. Refer to Figure 3-1.
(1)
Disconnect female coupling (1) from male coupling (2).
(2)
Disconnect female coupling (3) from male coupling (4).
(3)
Remove defective 2-inch gate valve (5) from water system.
(4)
Install cap (6) on male coupling (4).
(5)
Install plug (7) in female coupling (1).
b.
Installation. Refer to Figure 3-1.
(1)
Remove plug (7) from female coupling (1).
(2)
Remove cap (6) from male coupling (4).
(3)
Position 2-inch gate valve (5) in water system.
(4)
Connect female coupling (1) to male coupling (2).
(5)
Connect female coupling (3) to male coupling (4).
(6)
Start up water system (para. 2.9c) and check for leaks at 2-inch gate valve (5).
(7)
Refer unserviceable component to unit maintenance for repair.
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