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TM 9-2330-272-14
4-63. MANHOLE COVER MAINTENANCE (M131A5 AND M131A5C).
This Task Covers:
a.
Adjustment
d.
Cleaning and Inspection
b. Removal
e. Assembly
c.
Disassembly
f .
Installation
Initial Setup:
Equipment Conditions:
Materials/Parts:
l Tank purged (para 4-64).
“ Dry cleaning solvent (Item 16, Appendix E)
l One locknut
Tools/Test Equipment:
l Two gaskets
l General mechanic’s tool kit
a.
ADJUSTMENT
1.
Open fill cover (8) (para 2-14).
2.
Loosen locknut (6) and close fill cover (8).
3.
Loosen or tighten adjusting screw (15) until primary latch (10) just clears secondary latch on strongback (14).
4.
Open fill cover (8) and tighten locknut (6).
Close fill cover (8) and check clearance of primary latch (10) and strongback (14).
1.
Remove nut (3), washer (2), screw (1), and clamp ring (4) from manhole cover (13).
2.
Remove manhole cover (13) and gasket (11) from semitrailer (12). Discard gasket.
c .
DISASSEMBLY
1.
Remove locknut (6), adjusting screw (15), fill cover (8), and spring (5) from manhole cover (13). Discard locknut.
2.
Remove vent (9) and gasket (7) from fill cover (8). Discard gasket.
d.
CLEANING AND INSPECTION
WARNING
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective goggles
and gloves, and use only in a well-ventilated area. Avoid contact with skin, eyes, and
clothes, and DO NOT breathe vapors. DO NOT use near open flame or excessive heat.
The solvent’s flash point Is 100°F-138°F (38°C-59°C). If you become dizzy while
using cleaning solvent, Immediately get fresh air and medical help. If solvent contacts
eyes, immediately wash your eyes and get medical aid.
1.
Clean parts with dry cleaning solvent. Allow to dry.
2.
Inspect all parts for corrosion and damage. Replace any corroded or damaged parts.
4-128
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