in reverse numerical sequence as shown in
loaders, thereby allowing the suction valves to
funnction normally.
e. Adjustment. The pressure differential
(range between opening and closing pressures)
should be adjusted to about 10 percent of the
remove the relief valve.
cutout pressure (above 175 psi).
(1) The cutout pressure is adjusted by
loosening the jam nut (4, fig. 7-4) and turning
relief valve in numerical sequence as shown in
the adjusting screw (3), in to increase, and
out to decrease the pressure. The jam nut
should then be retightened.
c. Cleaning and Inspection.
(2) Pressure differential pressure adjust-
(1) Clean all metal parts with an ap-
ment is made by unscrewing the spring re-
proved cleaning solvent and dry thoroughly.
tainer (5), and either adding shims (6), to
(2) Inspect for cracks, breaks, worn or
decrease or removing shims to increase the
damaged threads.
differential.
(3) Replace a damaged or defective part.
d. Reassembly. Reassemble the relief valve
and install the compressor relief valve.
7-6
