TYPICAL AIR COMPRESSOR SYSTEM
1. Air tank. 2. Coolant line to engina.
3. Air line from tha air inlet manifold for tha engine. 4. Coolant line from angine. 5. Air line
to air tank. 6. Air line to unloader valve in haad aasembly. 7. Air governor. 8. Pressure gauge. 9. Air line from air compra~or. 10. Air
mmpraasor. 11. Oil Iina from engine for lubrication. 12. Oil outiet to engine.
13. Air line to components that need air for operation.
14. Air dryer. 15. Unloader Iina from air governor to air dryer.
MODE LS 950 BNSCE AND 950BSCE
closes and the exhaust valve opens. The piston
The air compressor (10) is a pump that fills tank
pushes the air from the cylinder through the open
(1) with air. The crankshaft in the air compressor is
exhaust valve and through a line (9) to the air
driven by the engine and the air compressor oper-
dryer (14). The movement of the crankshaft, rods
ates when the engine is running. The head assembly
and piston puts more and more air into the dryer
gets the coolant from the engine. The coolant goes
and the pressure of the air gets an increase.
through a line (4) connected to the coolant man-
ifold from the water pump of the engine. The cool-
The air compressor puts air into the dryer (14)
ant goes through the head of the air compressor
until the increase in the pressure of the air gets to
and through a line (2) to the coolant manifold to
the cut out pressure setting of the air governor (7).
the radiator of the engine.
The pressure of the air now moves a plunger in the
When the crankshaft is turning, it moves a con-
air governor and the air goes through the open
netting rod and piston up and down in the cylinder
valve in the air governor, through a line (6) and
of the air compressor. When the crankshaft moves
into the unloader valve in the head which moves
the rod and piston down, the inlet valve in the
the inlet valve open. As the air compressor piston
head assembly opens and air from the inlet man-
moves down, air from line (3) goes through the
ifold of the engine goes through a line (3), through
open inlet valve into the cylinder. When the piston
the open inlet valve and into the liner of the air
moves up, the air in the cylinder moves out
compressor. As the crankshaft turns farther it
through the open inlet valve and unloader line (15)
moves the rod and piston up and the inlet valve
to the air dryer purge valve opening.