4-3.3.2Air Line Lubricator. The air line lubricator may be used to inject a light oil into the air line to lubricate aircontrols or to inject an anti-freeze solution into the air line to prevent moisture in air from freezing in sub-freezingclimates.a.Adjustment. To adjust the amount of lubricant or anti-freeze introduced into air flow remove rubber plug (10)from cabinet, then use a screwdriver to turn the adjusting screw (11) counterclockwise to increase, clockwise todecrease. Lubricant/anti-freeze flow is observed at sight dome (12).b.Replacement.(1).Close valve (3) and open drain valve (1) to release air pressure.(2).Loosen and remove connection blocks (13 and 14). Remove lubricator (15).(3).Place new lubricator (15) in position and install connection blocks (13 and 14). Tighten blocks.(4).Close drain valve (1) and open valve (3).c.Repair. Repair of the air lubricator is restricted to the replacement of any defective parts. Most repair can bedone without removing the assembly from the piping. Remove only those parts necessary to accomplish repair.(1).Close valve (3) and open drain valve (1) to release air pressure.(2).Open drain valve (16) to drain lubricant (or anti-freeze) from bowl (17).(3).Grasp bowl (17), placing thumb on release (18). Move release down with thumb and rotate bowlcounterclockwise, then pull bowl straight down. Remove and discard o-ring (19).(4).Unscrew siphon tube (20) and adapter (21) with ball (22) from head (23).(5).Remove fill plug (24) and o-ring (25).(6).Remove sight dome (12) and o-ring (26).(7).Remove adjusting screw (11) and o-ring (27).NOTETo replace the orifice (30), the assembly must be removed from the piping. See paragraph b.above.(8).Remove screw (28), spring (29), and orifice (30) from head (23).NOTEBefore installing o-rings, coat them lightly with oil or petroleum jelly.4-30
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