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TM 10-5430-242-12&P
0020 00
0020 00-4
9. Rotate valve stem (3) clockwise, and disassemble valve stem (3) from the bottom side of bonnet (5).
NOTE
The packing ring should be removed only when it is to be replaced.
10. Drive packing ring (16) through the bottom of bonnet (5).
SERVICE
WARNING
Dry cleaning solvent, A-A-59601, used to clean parts, is potentially dangerous to
personnel and property. It produces toxic and flammable fumes. Use only in well
ventilated areas. Avoid repeated and prolonged skin contact. Do not use solvent
near an open flame or near excessive heat. The flash point of the solvent is 100F
to 130F (38 C to 59 C).
CAUTION
Dry cleaning solvent, A-A-59601, used to clean parts, must not come into contact
with any part of the fuel tank fabric. Damage to the fabric will occur.
1. Clean all parts with dry cleaning solvent and dry thoroughly with rags.
2. Clean all gasket-sealing surfaces thoroughly with detergent and hot water.
3. Inspect all mechanical parts for cracks, dents, breaks, and wear. Replace components if
unserviceable.
4. Polish valve stem (3) with crocus cloth. Coat valve stem (3) with grease.
ASSEMBLY
Gate Valve
1. Thread disk riser (12) into valve stem (3).
2. Check that disk riser (12) is completely secured to bonnet (5).
3. Lay valve body (11) on its side on a clean surface. Position new bonnet gasket (15) over disk riser
(12).
4. Install disk halves (13) and (14) onto disk riser (12).
5. Insert disk halves (13) and (14) into valve body (11) slot.
6. Place valve body (11) and bonnet (5) in an upright position.
7. Align valve body (11) to bonnet gasket (15). Install bonnet (5) assembly to valve body (11) with eight
hex-head cap screws (10), new lockwashers (9), and hex nuts (8).
8. Insert packing ring (16) onto valve stem (3).
9. Insert packing nut (4) onto valve stem (3) by pushing packing nut (4) down on the neck of bonnet (5)
until packing ring (16) is seated in bonnet (5).
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