TM 5-3820-239-15
Figure2-3(4)--Continued.
2. A bluish oil mist or haze is seen
(1) Open the valve on the manifold lu-
If the above conditions do not
exist, the needle valve may require
procedure:
additional adjusting.
(a) Turn the valve handwheel in a
(d) To increase the flow of oil, turn
clockwise direction until the valve
the needle valve handwheel coun-
is completely closed.
terclockwise.
(b) Open the valve six complete turns
(e) To decrease the flow of oil, turn
by turning the handwheel in a
the needle valve handwheel clock-
counterclockwise direction.
wise.
(c) Start the drill. After a few minutes
(f) Never allow the rig to operate
check to see if the following condi-
without lubricating oil in the res-
tion exist:
ervoir, Lack of lubrication will ruin
1. Oil droplets are visible on the drill
the air operated motors and drill.
shank piece.
2-8