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TM 9-2330-398-24
3-40. FLOAT VALVE REPLACEMENT.
This Task Covers:
a. Removal
b. Installation
Initial Setup:
Tools/Test Equipment:
• Semitrailer bonded and grounded (refer to
• General mechanic's tool kit (Item 4, Appendix B)
TM 9-2330-398-10).
• Semitrailer drained and purged (refer to
Materials/Parts:
TM 9-2330-398-10).
• Lockwasher (4) (Item 96, Appendix F)
Equipment Conditions:
• Semitrailer uncoupled (refer to TM 9-2330-398-10).
WARNING
Do not climb into tank unless Interior of tank has been drained and purged and an
explosive meter check indicates it is safe to do so. Adequate forced-air ventilation
or self-contained breathing apparatus must be used. The person entering tank
must have an attached life line. An observer must be stationed at manhole
opening so assistance may be summoned in the event of an emergency. Failure to
follow this warning may result In serious Injury or death to personnel.
NOTE
Float valve is located inside semitrailer tank. It can only be removed from inside
the tank only.
a. REMOVAL
1. Disconnect tube (1), with elbow (2) and bushing (3), from float valve (4).
2. Disconnect tube (9), with elbow (8) and bushing (7), from float valve (4).
3. Remove bushing (10) from float valve (4).
4. Remove four bolts (5) and lockwashers (6) and float valve (4) from semitrailer. Discard lockwashers.
b. INSTALLATION
1. Install float valve(4) on semitrailer With four bolts (5) and new lockwashers (6).
2. Install bushing (10) on float valve (4).
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