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6
CAUTION: The disc and retainer assembly
(Item 13 and 14) is under spring tension.
Care should be taken when removing these
parts. This will help prevent damage or loss
of parts.
25.
Conshelf 14 with port plug only: If the second stage
has a port plug (item 18), remove the port plug by turn-
ing it counterclockwise with a 4mm hex wrench. Remove
and discard the O-ring (item 17).
26.
Fit the disc and retainer wrench (U.S.D. P/N 110005)
over the disc end of the retainer (Item 14). Hold the
locknut (Item 22) with a ¹⁄₄-inch box end wrench (older
version) or with a ¹⁄₄" nutdriver inserted throught the
open port (newer version). Turn the disc and retainer
wrench counterclockwise and remove the locknut (Item
22). Discard the used locknut.
27.
Remove the spacer (Item 21), lever (Item 20) and
washer (Item 19) from inside the box bottom.
28.
Next, remove the retainer (Item 14) and the spring (Item
15) from the inlet boss of the box bottom. Discard the
used disc (Item 13) that is located in the larger end of
the retainer.
29.
Snip the plastic mouthpiece clamp (Item 23) with pliers
or, with care, use wire cutters and remove it. Next, pull
off the mouthpiece (Item 24).
30.
To remove the exhaust tube (Item 9) from the box bot-
tom (Item 16), place the second-stage in hot water at
200°F until the exhaust tube softens sufficiently to pull
off.
CAUTION: Do not "twist" the exhaust tube
(Item 42) during its removal, as the locating
lug inside will be damaged.
31.
Grasp the exhalation valve (Item 10) and remove it from
the box bottom. Discard the used valve.
This concludes the disassembly of the Conshelf
Second-Stage Regulator.
Before starting reassembly, perform parts
cleaning and lubrication according to the
procedures outlined in Procedure A, titled
Cleaning & Lubrication, on page 19.
AUTHORIZED REGULATOR
REASSEMBLY
This subsection presents a detailed, step-by-step reassembly
procedure for the Conshelf 14 and Supreme Regulator Series.
Unless noted otherwise, this procedure applies to both the
Conshelf 14 and Supreme models. Specific references for the
Conshelf 14 and Supreme are indicated when necessary. It is
important that the sequence be followed exactly in the order
given.
First Stage Resassembly
1.
Screw an empty CO
2
on the first-stage body (Item 16). Mount the first-stage
body in a bench vise, mainspring side facing upward, by
means of the CO
cartridge. (See Figure 3)
2
Figure 3
2.
Lightly lubricate the port plug O-rings (Item 19 & 21) and
place them on the corresponding first-stage port plugs
(Item 20 & 23).
3.
Install one in the low-pressure port plug (item 20) and
high-pressure port plug (item 23). Using a ¹⁄₂-inch crows-
foot attached to a torque wrench, tighten the port plugs
to 15 inch-pounds.
F
NOTE: Do not install remaining port plug (Item 20).
Set it aside for later installation. Leave the other two
low-pressure ports open for connection to a test bench
or intermediate-pressure test gauge (P/N 111610),
and a second-stage hose during subsequent regulator
adjustment and testing.
4.
Insert the pin support (Item 18) into the center hole of
the first-stage body.
5.
Install a new primary diaphragm (Item 25) into the
first-stage body over the pin support by pushing its
edges down into the supporting "seat" of the body. This
procedure can be completed by hand, or, if necessary,
with the aid of a non-metallic flat-ended tool. The edges
of the diaphragm should be evenly and firmly positioned
in the support "seat".
F
NOTE: If the primary diaphragm (Item 25) displays
a rough and smooth side, place the smooth side down
against the pin pad.
6.
Place the gasket (Item 26) and, then, the spring pad
(Item 27) on the diaphragm. Place the spring retainer
(Item 28) over these two components and screw it clock-
wise completely onto the first-stage body to a torque
of 20 ± 2 foot-pounds using a 1-³⁄₈ inch torque wrench.
F
NOTE: There are two (2) different configurations of
the low-pressure side of first-stage regulator. Read
over Step 7 completely prior to reassembly of the
regulator to become familiar with which procedure
you should use.
Conshelf XIV Service Manual
cartridge into a low-pressure port
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