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TM 10-4930-241-13
4-16. MANIFOLD (4-INCH/ONE VALVE) REPAIR - cont.
(13)
Remove dust cap (33) and remove gasket (34).
(14)
Remove nuts (35), lockwashers (36), flat washers (37) and cap screws (38).
(15)
Separate male coupling half(39) and flange gasket (40) from tee (12).
b.
Cleaning.
WARNING
Dry cleaning solvent, P-D-680, Type III, is potentially dangerous to personnel and equipment. Eye and
skin protection is required. Avoid repeated and prolonged skin contact. Wash hands immediately after
exposure. Do not use near open flame or excessive heat. Use only in areas with good ventilation. Using
wiping rags and cleaning solvent, remove dirt and contaminants from all components.
c.
Repair.
(1)
Refer to para. 4-17 to repair gate valve.
(2)
Replace defective components. Do not reuse sealing components.
d.
Assembly. Refer to figure 4-5.
CAUTIONS
* To prevent premature failure of manifold, coupling gaskets and flange gaskets certified for arctic service
must be installed. If a new dust cap or female coupling half has been installed, remove and discard
black gaskets supplied with the new components and replace them with arctic service gaskets.
* Ensure gasket is fully seated in gasket seat of coupling/dust cap to prevent leaks in assembled
components.
(1)
Position flange gasket (40) and male coupling half (39) on tee (12).
(2)
Install cap screws (38), flat washers (37), lockwashers (36) and nuts (35). Tighten nuts
evenly in a cross pattern.
(3)
Install gasket (34) in dust cap (33) and connect to male coupling half (39).
4-19
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