5-7. NITROGEN PRESSURE REGULATOR REPAIR. (Refer to Figure 5-6)
This task covers:
General Mechanics Tool Box,
Cover removed from Recovery / Recharger
Item 1, Section III, Appendix B.
Unit; paragraph 2-6.1
Pressure regulator repair is limited to selected items as noted.
5-7.1. Inlet or Outlet Pressure Gauge Replacement.
Hold regulator body (1) securely and unscrew inlet pressure gauge (2) or outlet pressure gauge (3) from body.
Inlet pressure gauge (3) will have a screen (4) in mounting hole. Remove screen and check for contamination.
If contaminated wash out with solvent (item 8, Section II, Appendix F) and dry thoroughly.
Discard damaged gauge.
Check replacement gauge visually for defects. Do not use if defective.
b. Check mounting hole in body for clean threads. Clean as necessary
c. For inlet pressure gauge (2) install screen (4) in hole and install inlet pressure gauge (2). (When tight make sure
gauge face is toward adjusting screw).
For outlet pressure gauge (3) install and tighten. (When tight make sure gauge face is toward adjusting screw).
5-7.2. Retaining Ring. Inlet Nut or Inlet Stem Assembly Replacement.
Unscrew stem (5), nut (6) and retaining ring (7 ) from body (1).
Remove retaining ring (7) from stem (5).
Slide nut (6) off stem (5).