MAINTENANCE
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SPEED AND PRESSURE REGULATION ADJUSTMENT
Normally, regulation requires no adjusting, but if correct adjustment
is lost, proceed as follows:
Refer to the diagram above.
A. Throttle Arm
B. Adjusting Screw
C. Engine Governor
D. Separator Tank
E. Inlet Unloader
Start the machine (Refer to
STARTING INSTRUCTIONS
in the
OPERATING INSTRUCTIONS
section of this manual
).
Inspect the throttle arm on the engine governor to see that it is
extended in the full speed position when the engine is running at
full
−
load speed and the service valve is fully open. (Refer to the
GENERAL INFORMATION section of this manual).
Adjust the service valve on the outside of the machine to maintain
normal operating discharge pressure without the throttle arm moving
from the full speed position before normal operating discharge
pressure is attained. Turn the adjusting screw clockwise to increase
the pressure.Optimum adjustment is achieved when the throttle arm
just moves from its full speed position and the pressure gauge reads
normal operating discharge pressure.
Close the service valve. The engine will slow to idle speed.
CAUTION:
Never allow the idle pressure to exceed maximum
allowable pressure on the pressure gauge, otherwise the safety valve
will operate.