Midland SIDE DUMP GRAVEL TRAILER Operator's Manual page 44

5.1.3 SERVICING
INTERVALS (cont'd)
2. Drain moisture from air tanks
(use cables to open drain valves).
IMPORTANT
During cold weather drain
moisture from the air
tanks every day to prevent
ice build up. During cold
weather operation, use
only recommended air line
anti freeze in the trailer air
system. Alcohol or methyl
hydrate is not to be used
because they will remove
vital lubricants causing
premature failures of valves
and components. Traces of
these products will void any
warranty consideration.
32
Fig. 17 AIR TANK
Valve (TW3000)
Drain Cable