|
| |
TM 10-4210-235-13
5-7 DRY CHEMICAL NOZZLE REPAIR
This task covers:
a.
Disassembly
b.
Repair
c.
Assembly
INITIAL SETUP:
Tools
Materials/Pans
General Mechanics Tool Kit, Appendix B, Section III,
Gasket, Appendix H, item 11
item 1
Preformed Packing (2), Appendix H, Item 12
Spanner Wrench, Appendix B, Section III, item 5
Gasket, Appendix H, item 14
Strap Wrench, Appendix B, Section III, item 3
Rod Wiper, Appendix H, item 15
Equipment Condition
Preformed Packing, Appendix H, item 16
Remove nozzles (para 4-14).
Spring Pin, Appendix H, item 17
Antisieze Tape, Appendix E, Section II, item 4
a.
Disassembly
(1)
Remove four screws (1) (fig. 5-1) and tie bar (2).
(2)
Remove nipple (3).
(3)
Using strap wrench, remove nozzle (4), gasket (5), nozzle tip (6), and sleeve (7). Discard gasket.
(4)
Using spanner wrench, remove forward valve seat (8) and preformed packing (9). Discard preformed
packing.
(5)
Scribe an alignment line between handle (10) and valve body (11).
(6)
Remove four screws (12) and valve handle (10).
(7)
Un-screw rear seal bushing (13) from valve body (11). Manipulate lever (14) as necessary.
(8)
Carefully remove screw (1) (fig. 5-2), valve seal washer (2), gasket (3), spring retainer (4), spring (5), rod
wiper (6), preformed packing (7), and rear seal bushing (8). Discard gasket, rod wiper, and preformed
packing.
(9)
Remove preformed packing (9) and spring pin(10). Disassemble valve stem (11), lever (12), and two drive
buttons (1). Discard preformed packing and spring pin.
b.
Repair
Repair Is limited to replacement of defective or damaged components only.
5-3
|
