INLAND AND COASTAL LARGE TUG (LT)
AIR RECEIVERS, SERVICE
Tools and Special Tools:
Tool Kit, General Mechanic's (Item 1, Table 2,
G o g g l e s , I n d u s t r i a l ( I t e m 3 , Ta b l e 3 ,
One Watercraft Engineer, 88L
Fire Watch (FM 55-502) (if grinding will take
1. Press the manual override switch (figure 1, item 1) on the automatic air drains and check that the drain
operates properly. The drain should permit water and air to vent when the switch is held down, and the valve
should close completely when the switch is released.
2. If an excessively large amount of water is present in the receivers, decrease the automatic drain valve's cycle
time rate or increase the drain time using the cycle time adjusting knob (figure 1, item 2) or the drain time
adjusting knob (figure 1, item 3) respectively. Turning each knob counterclockwise decreases the functions'
time, while turning the knob clockwise increases the time.
3. Inspect the receivers' exteriors for missing paint, rust, or other deterioration. If missing paint, rust, or deterio-
ration is found, touch up the painted area as described below:
Figure 1. Automatic Drain