TM 10-4610-310-14
0129 00
DISASSEMBLY - continued
2. Remove capscrew (18) from body (17) on 0.5-inch needle valve (1). See Figure 1.
3. Use strap wrench to remove bonnet (8) from body (17).
4. Remove O-ring (9) from bonnet (8).
5. Remove O-ring (5) from base of handle (4). Discard O-ring.
6. Remove capscrew (6) from stem nut (7).
7. Remove stem nut (7) from bonnet (8).
8. Remove needle (14) from stem (12) and body (17).
9. Remove stem (12) from bonnet (8).
10. Remove backup ring (10) and O-ring (11) from stem (12).
11. Remove seat (15) from body (17) if necessary with a seat removal tool.
12. Remove O-ring (16) from seat (15) if necessary.
REPAIR
1. Inspect the tip of the stem (12) for damage, burrs, or wear. Replace if damaged.
2. Inspect the seat (15) for damage, burrs, or wear. Replace if damaged.
3. Replace all damaged parts as necessary.
4. Replace all O-rings (5, 9, 10, 11, 13, 16).
ASSEMBLY
1. Lubricate O-rings (5, 9, 10, 11, 13, 16) with silicone lubricant. See Figure 1.
2. Install new O-ring (16) on seat (15).
3. Install seat (15) into body (17).
4. Install backup ring (10) on stem (12).
5. Install new O-rings (9, 13) on stem (12).
6. Insert stem (12) into bonnet (8).
7. Install stem nut (7) on stem (12). Insert into bonnet (8). Tighten securely.
8. Install capscrew (6) to secure stem nut (7) to bonnet (8).
9. Install O-ring (9) on bonnet (8).
10. Install bonnet (8) into body (17). Tighten securely.
11. Install locking capscrew (18) into body (17) to secure bonnet (8).
12. Install O-ring (5) onto handle (4).
13. Install hex head nut (2) and flat washer (3) on handle (4). Tighten securely.
END OF WORK PACKAGE
0129 00-2
