TM 10-4930-236-13&P
4-24. MANHOLE MAINTENANCE
This task consists of:
a.
Removal
b.
Disassembly
c.
Repair
d.
Assembly
e.
Installation
INITIAL SETUP
Tools Required
General Mechanic Tool Kit (Appendix B, Section III, Item 3)
Spanner Wrench (Appendix B, Section III, Item 8)
Materials/Parts Required
Dry Cleaning Solvent (Appendix E, Section II, Item 1)
Silicone Compound (Appendix E, Section II, Item 5)
Rags, Wiping (Appendix E, Section II, Item 13)
Gasket (4) (Appendix F)
Washer Nuts (4) (Appendix F)
Locknuts (4) (Appendix F)
Cotter Pins (6) (Appendix F)
Equipment Condition
Pumping Unit Shutdown
Tank 1/2 Full or Less
General Safety Instructions
____________
WARNING
____________
Do not smoke within 50 feet (15.34 meters) of the Tank and Pump Unit.
Silicone Compound is toxic to skin, eyes and respiratory tract.
Dry cleaning solvent is potentially dangerous to personnel and property.
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_
REMOVAL
a.
Open the manhole cover (1) and note
the offset position of the fill tube (2).
b.
Unscrew the wing nuts (3) far enough
for the hook clamps (4) to clear the manhole ring
(5) welded to the tank.
c.
Rotate the hook clamps (4) to position
the hooks toward the center of the manhole.
d.
Remove the manhole (6), with the fill
tube (2) attached, from the fuel tank.
e.
Remove the gasket (7) from the groove
in the manhole (6). Discard gasket.
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