Table 4-3. TROUBLESHOOTING - UNIT (CONT)
A. AIR DEMAND REGULATOR TROUBLESHOOTING INSTRUCTIONS (CONT)
Air leakage (submerge a. Second stage regulator diaphragm
a. Check and replace if neces-
in water to locate
source of leak).
b. Tighten rim clamp screw
c. Tighten inlet fitting (12),
d. Clean or replace (Section III,
dirty, damaged, or worn.
e. First stage regulator spring re-
e. Tighten spring retainer
First stage regulator plug screws
f. Tighten plug screw.
g. First stage regulator plug screw
g. Clean or replace (Section III,
h. Tighten hose connections
and (27) loose or damaged.
or replace hose (26).
Clean or replace O-Ring
(28) dirty, damaged, or worn.
j. Replace hose (26).
a. Clean of replace (Section III,
damaged, or worn.
b. Check points listed under "air
leakage," A and B item No. Six.
C. Mouthpiece torn or Loose band