TM-5-4310-389-14
NOTE
Compressor must be in operation. The oil pressure regulator is mounted on the 4th stage cylinder
and adjusted to 870 psi (70 BARS). (Normal operating range is 750 psi to 870 psi.)
ADJUST
CAUTION
Before starting the compressor, ensure that the set screw (2) has not been screwed all the way in.
NOTE
Two persons required for following procedure.
NOTE
Turning adjusting screw clockwise (+) increases pressure and counterclockwise (-) reduces pressure.
1.
Remove acorn nut (1) and turn adjusting screw (2) slowly on the oil pressure regulator (3, figure 3-10).
2.
Read oil pressure from compressor oil pressure gauge on control panel. Observe the oil sight gauge under the
regulator for flow.
Figure 3-10. Oil Pressure Regulating Valve
3-25
