TM 10-4630-207-13&P
UNIT MAINTENANCE
WASTE WATER VACUUM TANK TRAILER
NSN 4630-01-513-8155
MANWAY ASSEMBLY
SERVICE, REPLACE
INITIAL SETUP:
Tools
Personnel Required
Cleaner, Steam Pressure Jet, Trailer Mounted (WP
77W Water Treatment Specialist
Roll Pin Punch Set (WP 0053 00, Table 2, Item 11)
Materials/Parts
Equipment Condition
Gasket 4-inch (WP 0091 00, Item 12)
WWET/T empty, at atmospheric pressure
Gasket (Manway Assembly) (WP 0091 00, Item 15)
Tank cleaned and sanitized
Gloves, Rubber (WP 0089 00, Table 2, Item 4)
Isolation valve open
Rags, Wiping (WP 0091 00, Item 28)
Drain valve removed
Respirator (WP 0089 00, Table 2, Item 8)
SERVICE
WARNING
Protective clothing and equipment must be worn. A heavy-duty rubber apron,
rubber gloves, respirator, safety splash goggles and/or face shield are
required when potential exists for contact with wastewater or contaminated
surfaces. Wastewater and surfaces may be contaminated with pathogenic
microorganisms, bacteria or viruses, which present a risk of serious illness or
death to personnel. Refer to cleaning and sanitizing procedures in WP 0018
WARNING
To prevent injuries from pinching, be careful when removing gasket. Keep
hands away from manway assembly lip.
WARNING
Relieve pressure before opening manway. Manway may freeze or stick to
manway rim. To prevent serious injuries, do not remove swing bolts until
cover is free of the manway rim.
1. To service the manway, empty the wastewater tank as described under Tank Draining Operation in
0022 00-1
