TB
5-4220-200-12-1
Table 4-3. TROUBLESHOOTING - UNIT (CONT)
B. DIVER'S TANK BLOCK TROUBLESHOOTING INSTRUCTIONS (P/N 0636) (CONT)
ITEM
MALFUNCTION
NO.
PROBABLE CAUSE
CORRECTIVE ACTION
6
Reserve lever
a. Pin and plunger (fig. 4-3)(32)
a. Replace pin and plunger
inoperative.
damaged.
(32), (Section VI, para 4-16b).
b. Reserve stem (fig. 4-3) (33)
b. Tighten or replace reserve
loose or damaged.
stem (33), (Section VI,
7
Air leak from reserve
a. Reserve gasket (fig. 4-3) (34)
a. Replace reserve gasket
lever.
damaged.
(34), (Section VI, para 4-16b).
b. Reserve O-Ring (fig. 4-3) (35)
b. Replace reserve O-Ring
damaged.
(35), (Section VI, para 4-16b).
c. Reserve back-up ring (fig. 4-3)
c. Replace reserve back-up
(36) damaged.
ring (36), (Section VI,
C. DIVER'S TANK BLOCK TROUBLESHOOTING INSTRUCTIONS (P/N 2800-00)
ITEM
NO.
MALFUNCTION
PROBABLE CAUSE
CORRECTIVE ACTION
1
a. Seat (fig. 4-4) (23).
Air leak from manifold
a. Replace seat (23)
output connector
(Section VI, para 4-17b).
(fig. 4-4) (21).
b. Main stem (fig. 4-4) (24) damaged
b. Replace main stem (24),
(Section VI, para 4-17b).
2
Air leak from the
a. Main stem gasket (fig. 4-4) (25)
a. Replace main stem gasket
ON/OFF handle.
damaged
(25), (Section VI,
b. Main stem O-Ring (fig. 4-44) (26)
b. Replace main stem O-Ring
damaged.
(26), (Section VI, para 4-17b).
c. Bonnet back-up ring (fig. 4-4) (27)
c. Replace bonnet back-up
damaged.
ring (27), (Section VI,
d. Bonnet O-Ring (fig. 4-4) (28)
d. Replace bonnet O-Ring (28),
damaged.
(Section VI, para 4-17b).
e. Bonnet (fig. 4-4) (29) damaged.
e. Replace bonnet (29),
(Section VI, para 4-17b).
4-7
