Troubleshooting
6
311239D
Troubleshooting
Problem
Cause
Solution
Air leaking from regulator housing, or
gauge shows unstable regulated
pressure.
Loose or worn diaphragm (17d).
Tighten housing or repair regulator
using repair kit NXT095. See page 8.
Worn seat (17e) or poppet (17f).
Repair regulator using repair kit
NXT095. See page 8.
Main spool seals or relief valve worn. Replace with spool kit NXT098,
page 8.
Quick exhaust poppet (20b) or seat
(20a) worn.
Replace with quick exhaust repair kit
NXT099, page 8.
Air leaking from quick exhaust vent
hole.
Worn poppet o-ring (20c).
Replace with quick exhaust repair kit
NXT099, page 8.
Quick exhaust poppet (20b) or seat
(20a) worn.
Replace with quick exhaust repair kit
NXT099, page 8.
Air leaking from ball valve vent hole.
Loose inlet fitting (32a).
Tighten inlet fitting. See page 9.
Worn valve seals (32b, 32d).
Repair ball valve using repair kit
NXT097. See page 9.
Regulator does not regulate pres-
sure.
Worn spool o-rings or worn/damaged
diaphragm (17d).
With air on and bleed-type master air
valve (B) open, unscrew the regulator
housing (19).
•
If pressure drops, diaphragm is
damaged. Install Repair Kit
NXT095, page 8.
•
If air leaks out bottom orifice,
spool o-rings are worn. Install
Repair Kit NXT098, page 8.
