Table 2-1. Compressor Assembly Controls and Indicator (Continued)
Oil level sight gage
Indicates level of oil in compressor crankcase.
Keeps dirt out of the oil filler and relieves pressure
Located in each cylinder head on the compressor,
these valves vent excess pressure to the atmosphere.
Relieves excess interstage pressure.
Air tank drain valve
Drains moisture from air tank. Manually operated.
Senses tank pressure and at 180 psi signals comp-
ressor cylinder unloader valves to vent compressor
Indicates air pressure in system being pressurized.
Air tank relief valve
Releases compressed air in excess of compressor safety
limits. A pull ring is provided to check operation.
Indicates air pressure available for use.
Dual foot air chucks
Used to inflate tires. Two different sizes provided
to accommodate different sized tire valves.
Belt tension idler
Used to disengage V-belts from engine to compressor