The manhole cover fill plug has a gasket to seal the opening. Replace gasket as follows:
a. Release hinge assembly and open fill plug. (Figure 4-16.)
b. Inspect for cracks, brakes, abrasion, and defects.
Replace damaged or defective gasket by removing nut and gasket retainer plate, pressure vent
valve, and fuse plug.
d. Reassemble as follows:
Align holes in retainer plate, gasket and cover as shown.
Install vent & fuse plug.
Place cover on closing cam, position pressure vent under cam at hinge end. (Figure 4-16.)
a. General. A pump port (55 gallon drum plug) cover assembly is provided so that a hand pump may
be used. (Figure 4-18.)
b. Service. Remove pump port cover and examine gasket. Replace if defective.
a. General. The drain plug is used for removing remaining liquid accumulation after the tank is
drained through the dispensing valve. (Figure 4-18.)
b. Removal. Remove drain plug and gasket.
c. Cleaning and Inspection.
(1) Clean parts with drycleaning solvent (Item 1, App. E) and dry thoroughly.
(2) Inspect for breaks, cracks, and damaged threads. Replace a damaged drain plug. Replace the