TM 10-4630-207-13&P
UNIT MAINTENANCE
WASTE WATER VACUUM TANK TRAILER
NSN 4630-01-513-8155
FLOAT LEVEL INDICATOR
REPLACE
INITIAL SETUP:
Tools
Personnel Required
Tool Kit, General Mechanic's, Automotive (WP
MOS 77W Water Treatment Specialist (2)
Materials/Parts
Equipment Condition
Apron, Rubber (WP 0089 00, Table 2, Item 1)
Tank empty, at atmospheric pressure
Coveralls, Hooded (WP 0089 00, Table 2, Item 2)
Tank cleaned and sanitized
Gloves, Rubber (WP 0089 00, Table 2, Item 4)
Engine shut off
Goggles, Splash (WP 0089 00, Table 2, item 6)
Ignition key removed
Packing, Float Level Indicator (WP 0091 00, Item
Emergency stop button pushed in
25)
Wheel chocked
Rags, Wiping (WP 0091 00, Item 28)
Emergency brake set
Respirator (WP 0089 00, Table 2, Item 8)
REPLACE
NOTE
To replace the float level indicator packing, or exterior arrow indicator, proceed as
described in paragraph 1., below. To replace any part of the internal float level indicator
linkage, the tank must be cleaned and disinfected as described in WP 0018 00. Proceed
as described in paragraph 2., below.
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
1. To replace the float level indicator packing or exterior arrow indicator (figure 1, item 1), proceed as
follows:
a. Loosen the setscrew (figure 1, item 2) on the float level indicator sleeve (figure 1, item 3) and
remove the float level indicator (figure 1, item 1).
0021 00-1
