Repair manual

Apeks Regulator Service and Repair Manual 7
Figure 3
Removing Diaphragm Clamp
Figure 2
Removing Spring Adjuster
Figure 1
Removing Environmental End Cap
DISASSEMBLY PROCEDURES
1. Before disassembling the first stage, remove the low pressure second
stage hoses with a b" open-end wrench, and the low pressure infla-
tor hose with a b" or 2" open-end wrench. Remove the high pres-
sure hose with a s” open-end wrench, or the high pressure port plug
with a 5mm hex key. Remove and discard the O-rings from the male
fittings of each hose.
2. Install a vise mounting tool (P/N 1003-95) or a discharged C0
2
car-
tridge (P/N 7039-09) connected to a HP port adapter (P/N 1020-85)
into the HP port of the valve body(7) which is located near the serial
number.
DO NOT use a C0
2
cartridge that has not been discharged. Doing so
may cause the cartridge to rupture, possibly resulting in serious per-
sonal injury.
3. Secure the vise mounting tool inside a bench vise so that the first
stage is positioned standing vertical outside the vice with the envi-
ronmental end cap(1) facing up.
4. Mate the pin of the spanner tool (P/N AT30) into the bore hole of the
environmental end cap. While holding the spanner tool securely en-
gaged to prevent it from slipping, turn the end cap counter-clockwise
to loosen and remove from the diaphragm clamp(6) below it (see Fig.
1). Remove and discard the hydrostatic diaphragm(2).
5. Temporarily loosen the vise to turn the first stage over, in order to
remove the hydrostatic transmitter(4). Set the transmitter aside and
resecure the first stage in the same position, with the diaphragm clamp
facing up.
6. Apply a 6mm hex key to the spring adjuster(5) inside the diaphragm
clamp, and turn the spring adjuster counter-clockwise to loosen and
remove (see Fig. 2). Lift out the spring(7) and examine it closely
with the use of a magnifier to check for any signs of pitting, rusting,
or other corrosion that permeates the surface of the metal. Set the
spring aside if it is found to be in reusable condition, or replace with
new as needed.
7. Mate the pin of the spanner tool into the bore hole of the diaphragm
clamp. While holding the spanner tool securely engaged to prevent it
from slipping, turn the diaphragm clamp counter-clockwise to loosen
and remove from the valve body, along with the spring carrier(8).
(See Fig. 3.)
8. Using a 5mm hex key, install spare blanking plugs(19) into three of
the four LP ports, leaving the 2" LP port open while the other ports
are sealed.
9. Direct a short burst of low pressure (50 psi) air through the primary
LP port to partially dislodge the diaphragm(9) from the valve body
(see Fig. 4). Lift out the diaphragm and discard. Remove the blank-
ing plugs that were installed in the previous step.