(1) Replace manhole cover on tank.
(2) Position hooks (4) on tank rim and tighten
nuts (2).
(3) Close cover (10), drop hinge (15) into
position, and lock cam (7).
4-42. Pump Port
a. General. A pump port (55 gallon plug) cover
assembly (10, fig. 4-27) is provided so that a hand
pump may be used.
b . S e r v i c e . R e m o v e p u m p p o r t c o v e r a n d
examine gasket. Replace if defective.
4-43. Drain Valve Assembly
a. General. A drain valve assembly is provided
for draining accumulated water from the tanks.
b. Removal.
(1) Remove manhole cover (para 4-41).
( 2 ) I n s u r e t h a t t a n k h a s b e e n c o m p l e t e ly
drained and flushed thoroughly to remove fumes
and fuel before entering tank.
(3) Enter tank through manhole opening.
(4) Refer to figure 4-29 and loosen setscrew
(5).
Figure 4-29. Drain valve, exploded view.
4-41