Install this assembled group of parts in
cylinder cap (7) and Install retaining ring
(6). Attach cover (3) to cap (7) with screw
gaskets (5) and screws (4).
Install cartridge (15) in cylinder (19) and
screw tile tipper head assembly securely
onto cylinder (19) hand tight.
The upper and lower mounting brackets (2
and 1) are supplied with a dehydrator
assembly. Attach the brackets (2 and 1) to
cylinder (19) until ready for next higher
Priority Valve Assembly (See Figure 8-5). The
following paragraphs contain disassembly, cleaning,
inspection. repair or replacement and assembly
instructions for the priority valve.
Disassembly. Disassemble the priority valve
only to the extent necessary to repair or replace a
defective part or parts.
Unscrew and remove jam nut (I) and set
screw (2) from valve housing (3}.
Carefully unscrew and remove housing (3)
from valve body (12).
Remove two spring buttons (4), spring (5)
and value plunger (6).
Remove backup ring (7) and o-ring (8) from
Remove tubing elbow (9), valve washer
(10) and valve seat ( I 1 ) from body (12).
Cleaning. Refer to paragraph 6-3.a. for general
Clean all unpainted metal parts using
cleaning solvent that is in accordance with
Federal Specification P-D-680, Type II or
Wipe ion-metallic parts with a clean lint-
free cloth moistened in detergent and
water, and air dry.
Inspection. Refer to paragraph 6-3.b. for
general inspection requirements. Visually inspect for:
Valve plunger for nicks and burrs that would
Back-up ring and o-rings for cuts, excessive
wear, or deformation.
Repair or Replacement. Minor nicks, scoring, or
scratches on non-critical surfaces may be smoothed with
crocus cloth per Federal Specification P-C458. Clean up
minor thread damage to threaded parts.
Replace all threaded parts having worn,
stripped, or damaged threads.
Replace damaged or defective elbow.
Place new spring, plunger, backup ring. o-
ring, washer, and seat from repair kit, in
Assembly. To assemble the priority valve
assembly, proceed as follows:
A repair kit consisting of spring (5), plunger (6),
ring (7), o-ring (8), washer (10), and seat (I11) is
available. At overhaul of the priority valve, this
kit shall be used.
Assemble valve seat (I 1) in valve body (12)
and tap into position to full depth of bore.
Install washer (10) in body (12).
Install backup ring (7) and o-ring (8) in
plunger (6) groove. Assemble plunger (6)
in body (12) with a twisting motion,
assemble spring buttons (4) and spring (5).
Screw housing (3) onto body (12) until
housing bottoms. Install set screw (2) and
jam nut (1). See Figure 6-4 and install
elbow (9) and plug (13) in body (12).
Set valve to open at 2,200 psig (15,158
kPa) by adjusting set screw(2); refer to AIR
INSPECTION, paragraph 6-5.c and Figure
6-3, then tighten ,nut (1) to secure set
screw at this setting.
Ten-Micron Filter Assembly. (See Figure 8-6.)
The following paragraphs contain disassembly, cleaning,
instructions for the ten-micron filter assembly.
Disassembly. Disassemble the ten-micron filter
assembly only to the extent necessary to repair or
replace a defective part or parts.