TM 10-4610-243-13
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 shutdown (para. 2-12d)
WARNING
To prevent injury to personnel, all water pumps
must be shutdown and water pressure relieved
from discharge hoses before disconnecting
couplings. Cal) all open couplings to prevent
water system contamination
NOTE
Replacement of a typical 4-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 4-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 replacement 4-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)
Startup water system (para. 2-12c) and check for leaks at 4-inch gate valve (5).
3-26
