TM 5-3810-295-34
(1) Refer to figure 18-18 and reassemble the
(d) Remove screws (12) and lift baffle
relay valve assembly as follows:
plate (13) from valve body (32).
(a) Install pipe plug (31) into valve body
(e) Remove end cap (14) and spring
(32).
(15). Remove retaining ring (16) and
(b) Install new packing (28) on plug (27)
remove piston assembly (18) from valve
and install valve (30), spring (29) and plug (27)
body (32).
into valve body. Secure with retaining ring
(f) Remove valve guide (17) and
(26).
spring (19) from piston (18). Remove and
(c) Install new packing (21, 22 and 25) and
discard packing (20) from valve guide.
install valves (23 and 24) into piston (18).
(g) Remove valves (23 and 24) from
(d) Install new packing (20) on valve guide
piston (18). Remove packing (21, 22 and
(17). Install spring (19) and valve guide (17)
25) and discard.
into piston (18) and secure with retaining ring
(h) Remove retaining ring (26), plug
(16).
(27), spring (29) and valve (30) from valve
(e) Install piston assembly in valve body
body (32).
(32) and install spring (15) and end cap (14).
(i) Remove packing (28) from plug
(f) Place baffle plate (13) in proper position
(27). Discard packing.
in valve body (32) and secure with screws
(j) Remove pipe plug (31) from valve
(12).
body (32).
(g) Assemble diaphragm (8), diaphragm
b. Cleaning, Inspection and Repair.
plate (9) and new seal (7) to plunger (6).
(1) Clean all metal parts of the relay
Secure diaphragm and diaphragm plate with
valve assembly with cleaning solvent
nut (10).
(Fed. Spec. P-D-680 or equivalent) and
dry thoroughly.
(2) Inspect all parts of the relay valve
assembly for cracks, breaks, excessive
wear or other damage. Repair or replace
as necessary.
(3) Inspect all fittings and hardware for
stripped or damaged threads. Replace as
required.
c. Reassembly and Installation.
18-30
