Adjust the gauge when there is no pressure in the jacket or chamber.
(a) Adjust a gauge that has the adjustment screw in the center of the
pointer by holding the pointer and turning the adjustment screw slightly in the opposite
direction to that which the pointer is to be moved.
(b) Repeat until the pointer is at zero. If the adjustment screw is on the
face of the dial, do not hold the pointer; just turn the adjustment screw to set pointer at
(4) Assemble the glass dial in the rim and place the rim in position against
the gauge case.
(5) Turn the rim counterclockwise until you feel the threads drop into
alignment. Then screw the rim clockwise into the gauge case.
d. Adjust the Chamber Pressure Gauge. Adjust the chamber pressure gauge
when the chamber is at atmospheric pressure. The gauge is located at the right of the
control head. Refer to figure 1-19.
Figure 1-19. Chamber pressure gauge.
Remove the plastic cover.
(2) Adjust the gauge as necessary using the procedures given for the jacket
Replace the plastic cover.