Disassembly Procedure - Sherwood Scuba 9000 SERIES Service Manual

DISASSEMBLY PROCEDURE

1. Record the First Stage and Second Stage serial numbers and an inventory of all attached accessories before
beginning disassembly.
2. Perform an inspection of the regulator in accordance with the Annual Inspection Guidelines. And take notes of
the initial performance values when the regulator was received. This process will give the technician a reference
point if after the overhaul the regulator does not perform as expected.
3. Remove all hoses attached to the first stage with a 9/16" open end wrench for the LP Hose and a 5/8" open
end wrench for the HP Hose. BCD Inflator hoses typically require either a 9/16" or 1/2" open end wrench. Tag
all hoses that attach accessories such as gauge consoles to ensure they are returned to the appropriate regulator
port when reassembled.
4. Remove all port plugs (5 & 29) with a 5/32" hex key. Replace O-rings (17 & 30) if signs of damage or
deterioration are present, otherwise set aside for cleaning and reassembly.
NOTE – In order to avoid the risk of damage to the regulator finish during the disassembly process the
preferred method is to secure the first stage body in a bench vise without direct contact between the vise
jaws and the regulator. The First Stage Handle (P/N 20-115-00) or similar device is recommended to
mount the regulator securely without contact between the vise and the regulator body. An alternative
method is to use a woodworking vise with soft jaws to minimize the risk of damage to the regulator finish.
5. With the first stage secured in the vise use the First Stage Spanner Tool (PN 20-600-200) to rotate the
End Cap (2) counterclockwise to remove it from the First Stage Body (3). Set aside End Cap (2), Spring (28)
and Piston (1) for further disassembly. Set aside Styling Ring (6) for cleaning.
CAUTION – The socket and breaker bar combination provide the best means to prevent damage the
Yoke Retainer during disassembly. DO NOT use an adjustable wrench or open end wrench that does not
properly fit over the flats on the Yoke Retainer. Doing so may result in permanent damage to the Yoke
Retainer or other parts.
6. Loosen the Handwheel (32) to create space to
fit the 1" Yoke Retainer Socket (PN 20-155-500)
over the Yoke Retainer (4). Pass the Breaker Bar
(PN 20-157-500) through the yoke and engage
the socket. Tighten the Handwheel sufficiently
to secure the Breaker Bar and rotate the Breaker
Bar counterclockwise to loosen the Yoke Retainer.
Do not use impact.
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