INCH GATE VALVE MAINTENANCE-continued

TM 5-5430-226-12

4-19. 4-INCH GATE VALVE MAINTENANCE - cont.

This task covers:

a. Removal

d. Inspection

g. Installation

b. Disassembly

e. Repair

c. Cleaning

f. Assembly

INITIAL SET-UP:

Tools required:

Tool Kit, General Mechanics, Automotive (Appendix B, Sec. III, item 1)

Torque Wrench (0-50 Inch-pounds) (Appendix B, Sec. III, item 2)

Materials/Parts required:

Detergent, General Purpose (Item 1, Appendix D)

Rag, Wiping (Item 2, Appendix D)

Flange Gasket (2) - X-3702C

Packing Ring (3) - 235RF-05082P

Body Gasket - 235RF-05092G

Coupling Gasket - MS27030

Equipment Condition:

Water tank empty.

a. Removal. Disconnect gate valve from water tank filler/discharge assembly.

b. Disassembly.

NOTE

Disassemble valve only to extent required to accomplish repair.

(1) Disconnect dust cap (20). Remove eight nuts (25), lockwashers (24), washers (19), bolts (18), and dust

cap (20). Separate flanged coupling (17) and gasket (16) from valve body (15).

(2) Remove gasket (21) from dust cap (20).

(3) Disconnect dust plug (26). Remove eight nuts (23), lockwashers (22), washers (27), bolts (28), and dust

plug (26). Separate flanged coupling (30) and gasket (31) from valve body (15).

(4) Remove gasket (29) from flanged coupling (30).

(5) Remove nut (1) and handwheel (2) from stem (10).

4-22