|
| |
TM 10-5430-236-12&P
0026 00
0026 00-1
UNIT MAINTENANCE
GATE VALVE ASSEMBLY
REPAIR
INITIAL SETUP
Tool
General Mechanics Tool Kit
(Item 1, WP 0030 00)
Pipe Wrench
(Item 3, WP 0030 00)
Equipment Condition
Gate valve assembly removed (WP 0008 00).
Materials/Parts
Sealing Compound
(Item 1, WP 0034 00)
Mandatory Replacement Parts
Gasket
(Item 2, WP 0037 00) (two required)
Packing
(Item 11, WP 0037 00)
General Safety Instructions
WARNING
Do not smoke within 100 feet (30.5m) of tanks.
Fuel is toxic to skin, eyes, and respiratory tract.
DISASSEMBLY
NOTE
This procedure is typical for both gate valve assemblies on the berm liner and tank.
1. Disconnect two key holders (1) from chain (2), dust plug (3), and female coupling half (4).
2. Pull out locking arms (5) on female coupling half (4) and remove dust plug (3).
3. Remove gasket (6) from female coupling half (4). Discard gasket (6).
4. Remove female coupling half (4) from gate valve assembly (7).
5. Disconnect two key holders (8) from chain (9), dust cap (10), and male coupling half (11).
6. Pull out locking arms (12) on dust cap (10) and remove dust cap (10) from male coupling half (11).
7. Remove gasket (13) from dust cap (10). Discard gasket (13).
8. Remove male coupling half (11) from valve assembly (7).
9. Unscrew hand wheel nut (14) and pull hand wheel (15) off valve stem (16).
10. Unscrew packing nut (17) from bonnet (18). Remove packing gland (19) and packing (20) from
bonnet (18). Discard packing (20).
REPAIR
Replace all defective parts. Refer to WP0035 00 for fabrication of chain.
ASSEMBLY
1. Slide new packing (20) and packing gland (19) over stem (16) and install in bonnet (18).
|
