Sherwood MAXIMUS SRB3600 User's Manual

Sherwood MAXIMUS SRB3600 User's Manual
®
REGULATORS
®
(SRB3600)
Assembly & Maintenance Guide
FIRST STAGE - MAXIMUS® SRB3600
ITEM #
CATALOG #
. . . . . . . . . . . .SRB3601 . . . . . .
1 . . . . . . . . . . .5105-70 . . . . . . .
2 . . . . . . . . . . .3504-6 . . . . . . .
. . . . . . . . . . . .J2790056B . . . .
3 . . . . . . . . . . .1390-7 . . . . . . .
4 . . . . . . . . . . .29-3106-13A . . .
.........................
5 . . . . . . . . . . .19-8010-8 . . . . .
6 . . . . . . . . . . .MS28774-007 . .
7 . . . . . . . . . . .G007A . . . . . . . .
8 . . . . . . . . . . .3801-20 . . . . . . .
9 . . . . . . . . . . .1-1665-17 . . . . .
10 . . . . . . . . . .2-3801-4 . . . . . .
11 . . . . . . . . . .1-3105-6 . . . . . .
12 . . . . . . . . . .G011B . . . . . . . .
13 . . . . . . . . . .3106-6 . . . . . . .
14 . . . . . . . . . .J07-S1024-08DB
15 . . . . . . . . . .2-3601-1A . . . . .
16 . . . . . . . . . .G904A . . . . . . . .
17 . . . . . . . . . .1-3405-4 . . . . . .
18 . . . . . . . . . .G024A . . . . . . . .
19 . . . . . . . . . .2-3601-7 . . . . . .
20 . . . . . . . . . .G025A . . . . . . . .
21 . . . . . . . . . .3801-12B . . . . .
22 . . . . . . . . . .G007A . . . . . . . .
23 . . . . . . . . . .3801-5 . . . . . . .
24 . . . . . . . . . .25-3601-13 . . . .
25 . . . . . . . . . .G022A . . . . . . . .
26 . . . . . . . . . .2-3601-8 . . . . . .
27 . . . . . . . . . .3601-15 . . . . . . .
DESCRIPTION
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.First Stage Complete
.Handwheel Assembly
.Star Washer
.Filter Retaining Ring
.Filter
.Moving Orifice
.(bare, no O-rings)
.Disc Spring
.Backup Ring (for Moving Orifice)
.O-ring (for Moving Orifice, 2 ea.)
.Dust Cap
.Yoke Nut
.Yoke
.L.P. Port Plugs
.O-ring (for L.P. Port Plugs)
.One Way Bleed Valve
.Locking Allen Screw
.Main Body
.O-ring (for H. P. port plug)
.H. P. Port Plug
.O-ring (fits on large end of Body)
.Pressure Adjusting Ring
.O-ring (fits on Pressure Adj. Ring)
.Main Spring
.O-ring (for small end of piston)
.Piston Seat
.Piston (Bare, no O-rings or seat)
.O-ring (for large end of Piston)
.Cap
.Cap Label
TABLE OF CONTENTS
Page
1.0
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2.0
2.1
2.2
2.3
Specifications . . . . .
General Specification
First Stage . . . . . . . .
Second Stage . . . . . .
3.0
O-rings Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .3
4.0
4.1
4.2
Special Feature of the Maximus SRB3600 . . . . . . . . . . . . .4
First Stage Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Second Stage Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
5.0
5.1
5.2
5.3
5.4
First Stage Procedures . . . . . . . . . . . .
Tools Required for First Stage Servicing
Disassembly of First Stage . . . . . . . . . .
Assembly of First Stage . . . . . . . . . . . .
Testing of First Stage . . . . . . . . . . . . . . .
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.5
.5
.6
.10
.11
6.0
6.1
6.2
6.3
6.4
6.5
Secoond Stage Procedures . . . . . . . . . .
Tools Required for Second Stage Servicing
Disassembly of Second Stage . . . . . . . . . .
Assembly of Second Stage . . . . . . . . . . . .
Set-Up of Second Stage . . . . . . . . . . . . . .
Testing of Second Stage . . . . . . . . . . . . . .
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.13
.13
.13
.15
.17
.18
7.0
7.1
7.2
7.3
7.4
Helpful Hints . . . . . . . . . . . . . . . . .
Troubleshooting Regulators . . . . . . .
Parts Cleaning Recommendations . .
Commonly Used Cleaning Solutions
Handling Tips . . . . . . . . . . . . . . . . .
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.20
.20
.21
.22
.22
8.0
8.1
8.2
Two Year Warranty and Maintenance Information . . . . . . .24
Proper Procedure for Warranty Paperwork . . . . . . . . . . . . . .24
Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
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.2
.2
.2
.2
BEFORE YOU BEGIN.....
READ THESE INSTRUCTIONS COMPLETELY BEFORE YOU BEGIN SERVICING THE
REGULATOR.
THESE INSTRUCTIONS ARE INTENDED FOR PEOPLE WHO HAVE BEEN
AUTHORIZED BY SHERWOOD TO REPAIR SHERWOOD SCUBA EQUIPMENT. IF YOU
ARE NOT SO AUTHORIZED - STOP.
1.0 INTRODUCTION
1.
This manual is written as a guide to the annual servicing and maintenance of the Sherwood
Maximus SRB3600 regulator.
2.
This manual gives breakdowns of regulator parts, equipment specifications, servicing
instructions, troubleshooting recommendations, and guidelines for proper care of these
regulators. The manual is intended for use only by persons specially trained and authorized to
service Sherwood Scuba equipment.
3.
Anyone attempting to service or repair Sherwood Scuba regulators must have a thorough
knowledge of the principles of operation of scuba regulators and valves, as well as the
appropriate mechanical ability. The technician must be properly trained in the safe use of
compressed air and the various tools and cleaning solutions involved in the procedures
outlined in this manual.
4.
The best source for current part numbers for any of the parts listed in this manual is your
authorized Sherwood Scuba distributor.
5.
Because of the many unique features found in Sherwood regulators, Sherwood conducts
seminars on a regular basis throughout North America to train technicians in proper service and
repair procedures for all current Sherwood regulators. In addition, all Sherwood dealers and
their staff members are encouraged to attend the seminars to gain an in-depth understanding
of the construction, special features and operation of Sherwood regulators. For information on
the dates and locations of upcoming Sherwood service seminars near you, contact your
Sherwood Scuba distributor or sales representative.
NOTE: You must be authorized by Sherwood to work on Sherwood Scuba equipment. You can obtain
proper authorization by attending all appropriate seminars given in your area. This is the only way you can
become an authorized Sherwood technician.
6.
Companion instructional VHS videotapes to this and other Sherwood Scuba repair manuals are
available from your authorized Sherwood Scuba distributor at a nominal cost. Ask your
Sherwood Scuba sales representative for details.
7.
If you have any questions, or need more information, contact your Sherwood Scuba sales
representative or Authorized Distributor.
1
2.0 SPECIFICATIONS
2.1
GENERAL SPECIFICATIONS FOR THE SRB3600 MAXIMUS REGULATOR
REGULATOR MODEL:
AIR FLOW:
INHALATION RESISTANCE:
EXHALATION RESISTANCE:
RECOMMENDED LUBRICANT:
2.2.
First Stage Regulator (SRB3601)
TYPE:
WEIGHT:
INTERSTAGE PRESSURE:
MAXIMUM INLET PRESSURE:
POSITIVE AIR PURGE
FLOW RATE:
# LOW PRESSURE PORTS:
# HIGH PRESSURE PORTS:
MATERIALS:
2.3.
Sherwood SRB3600 Maximus
32 cu. ft./min. (850 liters)/min. @ 1 atmosphere
1.1" w.c. (2.8 cm w.c.) @ 1 atmosphere
0.5" w.c. (1.3 cm w.c.) max. @ 1 atm.
LTI Christo-Lube® MCG#111, Dow Corning #111
Compound®, Parker Super O-Lube®, or equivalent
Externally adjustable, flow-by piston with Moving
orifice balancing, and Positive Air Purge (Dry Air Bleed),
U.S. Pat. # 4,226,257
1 lb. 11 oz. (.8kg)
120 -150 psi (8.3-10 Bar)
232 Bar for SRB3600CE Model
13-25 cc/minute
5 (3/8"-24 UNF)
1 (7/16"-20 UNF)
Body – CDA-360 Brass
O-rings – Buna-N
Bleed Valve – Ethylene Propylene
Piston Seat – Teflon®
Second Stage Regulator (SRB3602):
TYPE:
WEIGHT:
HOSE LENGTH:
MATERIALS :
Downstream poppet, diaphragm, externally –
adjustable, with underarm hose routing
8 oz. (.23 kg) w/o hose
40 in. (1.02 m)
Cover –Thermoplastic Triax®
Case –Thermoplastic Triax®
Poppet Seat – Buna-N
O-Rings – Buna-N
Diaphragm – Tufel® (blue)
Exhaust Valve – Thermoplastic Elastomer
Wisdom® Mouthpiece - C-Flex®
Maximum certified depth is 50m.
2
3.0 O-RINGS REFERENCE CHART
3
4.0 SPECIAL FEATURES OF THE MAXIMUS SRB3600
REGULATOR
4.1
FIRST STAGE FEATURES
1
The external adjustability of the first stage allows you to adjust the regulator output to match
the type of diving being done. Relatively low outlet pressure (120 psi, 8.3 Bar) helps the
regulator resist freezing in cold water diving. Medium outlet pressure (130 psi, 9 Bar), combines
good breathing effort and durability. Relatively high outlet pressure (150 psi, 10 Bar), maximizes
flow rate for high work effort dives.
4.1
SECOND STAGE FEATURES
1
The Maximus regulator's unique underarm hose routing protects the hose from snagging on
obstructions during close quarters diving (coral, caves, wrecks, piers, etc.). This routing also
allows for better head movement, thus lowering jaw fatigue caused by the hose pushing or
pulling the second stage. A longer hose and unique swivels make the regulator ideal in airsharing exercises.
2.
The large high flow Wisdom® mouthpiece and the oval exhaust valve provide comfort and lower
breathing resistance.
3.
The externally adjustable demand valve in the second stage allows the diver to custom-tailor
the regulator to the diving conditions and interstage pressure. The knob can be backed off for
extended storage periods of longer than three months, eliminating the need for purge button
lock down tabs.
4.
To help prevent rapid pressure buildup in the first stage, the Maximus allows you to leave the
knob in the backed off (counter-clockwise) position when the air is first turned on, and then
close the knob (clockwise) until the airflow just stops. This is especially important when high
(3500 psi, 241 Bar) tank pressures are used because it helps prevent rapid heat buildup at the
piston seat.
5.
The smooth hydrodynamic shape of the second stage is less resistant to forward motion
through water, thus lowering jaw fatigue. The shape is also designed to resist free-flowing
caused by rapid initial immersion or forward motion.
6.
With lower interstage hose pressure (120 psi, 8.3 Bar), the heat transfer fins become warmer
during exhalation, and transfer heat to the lever support area (thus aiding in freeze resistance).
At high interstage hose pressures (135-150 psi, 9.3-10 Bar), the transfer fins become much
colder, causing condensation and moisture retention for the diver.
4
BEFORE YOU BEGIN:
Before you begin disassembly of the regulator, test the first and second stages for output
pressures and leakage. Pretesting in this way will help you to pinpoint any specific areas
requiring repair. Make sure your work area is clean and well lighted, with clean compressed air
available to blow sand and dirt from parts.
5.0 FIRST STAGE PROCEDURES
5.1
TOOLS REQUIRED FOR FIRST STAGE SERVICING
- Bench vise
- 3/32" Allen wrench
- 5/32" Allen wrench
- 6" or 8" adjustable wrenches
- 15" adjustable wrench
- Pocket screwdriver (slotted)
- Sherwood 50 cc Graduated Cylinder (p/n TL110)
- Sherwood Piston Seat Removal Tool (p/n TL112)
- Sherwood Plastic Probe (p/n TL111) to push out orifice
- Sherwood Regulator Support Handle (p/n TL113)
- Sherwood Intermediate Pressure Gauge (p/n TL119)
- Sherwood Inlet Filter Installation Tool (p/n TL115)
- Sherwood O-ring Installation Cones:
Brass-colored - p/n TL106 (for installing O-ring onto piston tip)
Green-colored - p/n 38-TL107 (for installing first O-ring onto moving orifice)
Black-colored - p/n 29-TL108 (for installing second O-ring onto moving orifice)
- Annual Service Kit # 4000-4
- Enriched Air Conversion Kit #4000-4N
NOTE: for more information on Sherwood tools and their uses, see Sherwood's Tools, Repair Kits and
Accessories - Assembly & Maintenance Guide, available from your authorized Sherwood distributor.
5
5.2
DISASSEMBLY Of FIRST STAGE
To view all the parts used in the first stage, fold out the front cover of this manual. The
circled numbers below refer to the corresponding numbers on the drawing.
1.
Use 6" or 8" adjustable wrenches to disconnect all hoses from the first stage. Pull back the
hose protector from the inlet end of the hose. Inspect the hoses for wear. Pay particular
attention to the area where the metal ferrules meet the rubber hose material. Replace hoses if
necessary.
2.
Unscrew and remove the handwheel 1 .
3.
Remove the dust cap 8 .
4.
Install a Sherwood regulator support handle (p/n 4700-15) into one of the low-pressure ports.
Use the support handle and a 15" adjustable wrench or bench vise to loosen the yoke nut
from the body 15 . See Photo # 1.
Photo #1
5.
Remove the yoke 10 and yoke nut 9 from the body.
NOTE: If a Sherwood DIN adapter (p/n SAA530O) is installed in place of the normal yoke assembly, remove it
at this time. See Sherwood Scuba Technical Bulletin #104 for servicing procedures for the SAAS300 DIN adapter.
6.
Use a 5/32" Allen wrench to remove all remaining port plugs 11 17 from the main body 17 .
7.
Use a 3/32" Allen wrench to remove the locking Allen screw 14 from the main body
(see Photo #2).
Photo #2
6
8.
Use a regulator support handle and a 15" adjustable wrench or bench vise to remove the cap
26 and pressure adjusting ring 19 as a unit from the main body. Keep the wrench on the
adjusting ring flats, not on the cap flats, for this operation. This will ensure that the two units do
not separate (see Photo # 3).
Photo #3
9.
Use a 15" adjustable wrench and a bench vise to separate the cap from the adjusting ring (see
Photo # 4).
Photo #4
10.
Remove the piston 24 and spring 21 from the cap.
11.
Remove the piston O-rings and discard them. Take care not to scratch the O-ring grooves in the
piston. Remove the piston seat 23 by pushing through the stem with the Sherwood piston seat
removal tool (p/n TL112) from the large end. The seat will then pop out. Discard the old seat.
12.
If any grease or oil gets on the flow control element assembly in the face of the piston,
the air flow will be impeded.
a. Keep greasy fingertips away from the piston during servicing.
7
b. Use a clean, dry cloth to wipe the piston surface if it needs cleaning.
c. Do not put the piston in a cleaning solution or ultrasonic cleaner. If there is any oil on
the surface, it will coat the piston.
d. A coating of grease or oil will interfere with the air flow through the flow control element in the
face of the piston (see Photo #5). It may also cause the Dry Air Bleed System to cease
working. Although this is not dangerous to the diver, it may increase the difficulty of breathing
through the regulator upon descent.
e. If no air is bubbling from the one-way bleed valve, this is a good indication that the positive air
purge system is not working.
Photo #5
13.
Place a new piston seat on a clean piece of paper, on a hard, flat surface. Press the piston tip
firmly over the seat until it is fully installed. The piston is now rebuilt, and ready for installation.
14.
Use a pocket screwdriver to remove the star washer 2 that holds the filter 3 in place. Most
units used a star washer (a flat disc washer with six outward facing legs). Units made after 1997
use a wire-retaining ring with a forward hook. The only first stage bodies that can use this reuseable ring, have a groove machined into the area above the filter for the ring to fit snugly into.
Always discard the used filter and old style star washers, newer style retaining rings are saved
for reuse.
15.
Remove the moving orifice 4 from the body by pushing it with a soft plastic probe from the
large threaded end of the body. Catch the orifice assembly in your hand as it comes out the
yoke nut thread end of the body (see Photo # 6). Carefully inspect the disc springs 5 for any
cracks. Replace all five disc springs if any cracks are found.
Photo #6
8
16.
Remove the one-way bleed valve 13 from the body using your fingers or a soft plastic probe.
DO NOT use a metal screwdriver or blade since this will scratch the sealing surface against
which the bleed valve seals. This scratch may allow water to enter the first stage spring
chamber during use.
The sealing surface on the body where the one-way valve seals must be totally clean of deposits.
If any deposits remain on the sealing surface after initial cleaning, take a fine abrasive polishing
stick and polish the surface to remove deposits (see Photo #7).
17.
Blow all residue from the body after polishing.
Photo #7
18.
Remove the large O-ring 18 from the body and the large O-ring 20 from the pressure adjusting ring.
19.
Inspect all O-rings (other than those discarded because they were found in the Maximus annual
service kit # 4000-4). If you notice any cuts, deformities, or abrasion, replace the damaged 0rings. Otherwise, these static O-rings can be reused in the first stage. Most of the O-rings not
found in the service kit are non-moving gaskets with little or no pressure across them. The
clean environment created by the Positive Air Purge System (Dry Air Bleed) makes this re-use
possible. Clean the O-rings carefully with a lint free rag, and re-lubricate lightly with LTI ChristoLube® MCG #111, Dow-Corning 111® Silicone grease, Parker O-ring Lube®, or equivalent.
20.
If necessary, clean all metal parts of the first stage except the piston in an ultrasonic cleaner
or cleaning solution.
Remove the O-rings before cleaning any metal parts; most cleaning solutions can
damage the O-ring material. See Section 7.3 for recommendations on cleaning solutions.
21.
Remove the regulator parts from the cleaning solution. Blow all internal passageways dry with
clean, dry compressed air.
22.
The piston O-rings and the moving orifice O-rings move in bores. Inspect these bores for
corrosion or wear. If the bores are leaking air because of wear, replace the parts. If some
corrosion deposits persist, carefully wipe them away with a plastic scrubbing cloth. Blow any
resulting dust out of the regulator parts.
23.
Inspect the moving orifice's sealing surface (located at the top edge of the orifice cone). Any
9
nicks, scratches, or corrosion at the top of the cone can allow air to pass, which could result in
creeping hose pressures. Polish out the defects using a fine abrasive polishing stick. When
polishing, apply a light pressure to prevent excessive wear on the cone. You do not need to polish
the rough outer edge of the cone; this is not a sealing surface. Use compressed air to blow away
any dust created by the polishing process.
5.3
ASSEMBLY OF FIRST STAGE
1
Kit # 4000-4 is the Annual Service Kit for the SRB3600 Maximus. This kit contains the minimum
parts to be replaced at every annual service interval.
2.
Before installing new O-rings on the piston and moving orifice, lubricate the O-rings with one of
the recommended lubricants (see Section 7.3). Installing the small O-ring 22 on the piston will
be easier if you use the brass-colored Sherwood O-ring installation cone (p/n TL106). Place the
cone over the tip of the piston. Slide the lubricated O-ring over the cone until it slips into the
piston groove.
3.
Place the new piston seat 23 on a clean piece of paper on a hard flat surface. Press the piston
tip firmly over the seat until it is fully installed. The piston is now rebuilt and ready for installation.
4.
Use the Sherwood installation cones to prevent damage to the new O-rings during installation
onto the moving orifice. Use the black O-ring installation cone (p/n 29-TL108) to install first the
new O-ring 7 and then the used backup washer 6 onto the wider groove on the moving
orifice. Position them so that the black O-ring is closest to the wide end of the moving orifice.
Use the green O-ring installation cone (p/n 38-TL107) to install the O-ring into the groove
closest to the pointed tip of the orifice.
5.
Using a greased soft probe, lightly lubricate the first 1/8" of the small bore in the body 15
where the small piston and moving orifice O-rings seal.
6.
With your finger, push the moving orifice assembly, pointed orifice end first, into the yoke end
of the main body as far as possible. Place the inlet filter 3 into the main body on top of
the moving orifice. Place the new star washer 2 from the service kiton top of the filter screen.
NOTE: Replace domed screen P/N 3601-16 with filter P/N 1390-7. Some first stage bodies have a groove
machined in the inlet for a filter retaining ring P/N J2790056B. For first stage bodies without the groove use
a star washer P/N 3504-6
7.
Replace the lightly lubricated O-ring 20 onto the pressure adjusting ring 19 . Lightly lubricate the
piston bore in the pressure adjusting ring on the surface where the large piston O-ring will seal.
8.
Place the main spring 21 over the piston stem. Insert the main spring and piston (with its clean,
lubricated new O-rings and seat) into the pressure adjusting ring.
9.
Screw the cap 26 onto the pressure adjusting ring. Use a 15" adjustable wrench and bench
vise to snugly tighten the cap to the pressure adjusting ring (see Photo # 4). Do not
overtighten.
10.
Replace the lightly lubricated O-ring 18 onto the main body. Be sure to place the O-ring into
the groove right next to the threads, not in the groove away from contact with the threads.
Lightly lubricate the bore in the pressure adjusting ring where the body O-ring 18 will seal. With
10
a greased soft probe, lightly lubricate the first 1/8" of the small bore in the main body where
the small piston O-ring will seal.
11.
Install the pressure adjusting ring/cap assembly onto the body. Hand-tighten the assembly onto
the body until it bottoms on the thread.
12.
Lubricate the locking Allen screw 14 with silicone grease, and place a small dab of grease onto
the hole in the main body where the Allen screw is inserted. Using a 3/32" Allen wrench, screw
the locking Allen screw into the main body until it lightly bottoms on the thread. Do not tighten
further.
13.
Using your index finger, install the clean and dry one-way bleed valve 13 into the body 15 . No
particular orientation is necessary.
NOTE: If you use the bleed valve with the9 Sherwood logo molded into it P/N 3106-6 you will notice a "dot"
molded near the right side of the logo. Install the bleed valve with the "dot" oriented closest to the inlet of
the regulator (towards the yoke).
14.
Lightly lubricate the body yoke nut
the yoke nut 9 onto the body.
threads with silicone grease and install the yoke 10 and
15.
Using the regulator support handle (p/n 4700-15) in one of the LP pressure ports of the body
and a 15" adjustable wrench, tighten the yoke nut snugly (see Photo # 1).
16.
Lightly lubricate the threads of the handwheel 1 with silicone grease and install the handwheel
and dust cap 8 onto the yoke 10 .
17.
If the first stage has a SYA-5300 or SYA5200 DIN adapter instead of a standard yoke, see the
installation instructions given in Sherwood Technical Bulletin 104 for overhaul and installation
instructions of the DIN adapter.
5.4
TESTING Of FIRST STAGE
NOTE: For safety, always test the first stage regulator with at least one second stage installed. The demand
valve in the second stage acts as a relief valve in the event of a malfunction.
5.4.1
Before You Begin Testing
1
Install an intermediate pressure test gauge (p/n TL119) into one of the low pressure ports of the
first stage. Plug any open outlet ports with suitable port plugs.
2.
Install the first stage onto a tank valve, and introduce 2700 - 3500 psig to the inlet of the
regulator. Flow air through the regulator by pushing the purge button on the second stage
several times to get all parts properly seated.
5.4.2 Dry Air Bleed flow Test
1.
Submerge the first stage under several inches of water.
2.
A small stream of bubbles should be escaping from the one-way bleed valve on the first stage and
nowhere else on the body. The number and size of the bubbles may vary from regulator to regulator,
but the volume of air should be 13 - 25 cc per minute. To check this, use the following steps:
a. Invert a small (25 cc capacity) graduated cylinder filled with water over the underwater flow of
11
bubbles. The air entering the cylinder will gradually empty some of the water out of the cylinder.
b. After exactly one minute, remove the graduated cylinder from the air flow and raise the
cylinder to the surface so that the air/water dividing line inside the cylinder matches the water
level outside the cylinder. The measurement at this point should be between 13 and 25 cc.
c.
If the reading is significantly higher than 25 cc, check the O-rings and sealing surfaces
mated to the piston. If the reading is below 13 cc, check the flow control element in the
piston 24 to determine if it has been clogged by grease or other foreign matter. If it is
clogged, the piston must be replaced.
5.4.3 Intermediate Pressure Test
NOTE: This test determmines the regulator’s lock-up pressure (the pressure put out by the first stage during
a no-flow condition).
1
Attach any Sherwood second stage to one of the low pressure ports and the Sherwood
intermediate pressure gauge (TL119) to another low pressure port. Plug all other ports with
appropriate port plugs.
2.
Attach the regulator to a tank valve giving a source pressure of between 2700 and 3500 psig
(186 and 240 Bar).
3.
Turn the supply air on slowly while listening for any unusual air leaks. If any are heard, turn the
air off immediately and determine the source of the leak. If no leaks are found, watch the
pressure gauge reading rise as you continue turning the air on slowly. It should stop at about
120 psig (8.3 Bar) when the pressure adjusting ring 19 is screwed all the way in.
4.
If the pressure gauge continues to rise above 140 psig (9.7 Bar), turn the air supply off
immediately and inspect the regulator to determine the cause.
5.
Once the air pressure stops rising, the internal parts should be worked into place by allowing
air to escape from the second stage several times by pushing the purge button.
6.
To raise the pressure to the desired final setting, slowly turn the pressure adjusting ring in a
counter-clockwise direction (as seen when looking down at the cap end of the regulator) in 1/8turn stages. At the end of each 1/8-turn, push the purge button several times to let the internal
parts work into place to give a true reading.
7.
If the pressure goes above the correct reading, turn the pressure adjusting ring clockwise in 1/8
turn increments. Between each 1/8 turn, the purge button of the second stage must be
depressed to allow the pressure to drop.
8.
After the correct pressure has been reached, let the regulator sit for several minutes and then
depress the Purge Button again to check that the regulator returns to the proper pressure.
9.
Once the proper pressure has been set, use the 3/32" Allen wrench to tighten the locking Allen
screw 14 . Tighten the screw clockwise only enough to stop the pressure adjusting ring from
being moved by hand. Do not overtighten. Check the intermediate pressure one more time
after you have tightened the Allen screw.
10.
Never set the output pressure of the first stage above 150 psig (10.3 Bar).
12
6.0 SECOND STAGE PROCEDURES
6.1
TOOLS REQUIRED FOR SECOND STAGE SERVING
- 5/32" nut driver (if you don't have a 5/32" nut driver, use a 5/16 - 18 x 2" socket set screw)
- 5/8" wrench
- 3/4" wrench
- 1/4" nut driver
- Slotted screwdriver
- Size "0" square drive screwdriver (such as a Channel Lock SL-0)
- # 10 Tom screwdriver
- Phillips screwdriver
- Side cutting pliers
- Sherwood Lever Height Adjusting Tool (p/n 4005-16)
- Red Loctite® (stud locking adhesive)
6.2
DISASSEMBLY Of SECOND STAGE
To view the complete parts list of the second stage, fold out the back cover of this manual.
1
Remove the mouthpiece 14 by cutting the mouthpiece tie 15 with side cutting pliers. Examine
the condition of the mouthpiece. Pay particular attention to the area on top just behind where
the old tie tightened. This is a prime area for small holes to develop. If the mouthpiece is in
good condition, it can be reused.
2.
Remove the two cover retaining screws 20 using a size "0" square drive screwdriver or a
Phillips screwdriver.
NOTE: Always remove these screws before peeling the cover off the case. If you peel the cover off the case
without removing these screws, eventually the screw holes in the cover will elongate and no longer hold
the screws. This is not covered under warranty!
3.
Roll the cover 21 off the top of the case 17 using your thumb and forefinger.
4.
At this point the Sherwood logo on the purge button 22 can be changed to a different
color. See the parts list on the foldout back cover for available colors. If you are going to
change the color, follow the next five steps. Otherwise, go on to Item 5 in this section.
a. Look at the tab inside the cover that holds the logo in place.
13
b.
If the tab has a metal grip ring holding the logo into the cover, grasp the ring with pliers so
that squeezing the pliers causes the jaws of the grip ring to open. Pull the grip ring off, and
then remove the logo by pulling it from the outside of the case.
c.
If the logo has a plastic barb built into it, instead of the grip ring, then it is the newer style.
Simply pull the logo from the outside of the cover until it pops out.
d.
To install the new logo with a grip ring: flatten the old grip ring with pliers until it has its original
shape. Then install the logo from the outside of the cover. Slide the straightened grip ring
down the stem of the replacement logo until it bottoms. Check the grip ring for tightness.
e.
To install the new logo with a self-holding barb: push the new logo into the case from the
outside until the barb is fully engaged inside the cover.
5.
Using your thumbnail or a slotted screwdriver, gently pry the diaphragm retaining ring 19 out of
the case (see Photo #8).
6.
Gently remove the diaphragm 18 from the case.
7.
Using a size "0" square drive screwdriver or a small Phillips screwdriver, loosen and remove the
screw 2 and washer 3 from the orifice adjusting knob 4 .
8.
Remove the adjusting knob from the end of the adjusting orifice.
9.
Using a small slotted screwdriver, remove the cir-clip 5 from the adjusting orifice.
10.
Holding the base of the orifice housing with a 3/4" wrench, use a 5/8" wrench to remove the
retainer nut 6 from the orifice housing 13 .
11.
Remove the swivel fitting 7 from the orifice housing. Inspect the inner sealing surfaces for
scratches.
12.
While holding the plastic case 17 in your hand, use a 3/4" wrench to remove the orifice
housing from the lever support 26 . The case is reinforced to withstand this operation.
13.
Before removing the lever support 26 and assembly from the case, look into the mouthpiece
tube from the outside. There are two plastic tabs in the mouthpiece tube against which the fins
rest. The fins should rest on the side of the tabs towards the orifice housing (on the right side
as you look into the mouthpiece tube from the outside). Remember this placement when you
reassemble the regulator!
14.
Remove the lever support 26 and assembly from the case with the heat transfer 30 31 still
attached. There is no reason to remove these fins from the lever support during a normal
service interval. If you do have to remove the fins, use a 5/32" socket wrench to remove and
replace the screws 32 .
15.
Normally, only the poppet stem seat insert 23 will need to be changed to restore the second
stage to like-new performance. To change this stem seat insert, leave the lever assembly together.
a. Carefully remove the old seat insert from the poppet cavity using a pen knife or similar object.
b. Put the new seat insert on a clean flat surface and lower the poppet cavity over it. Install the
black molded seat (p/n 978-9BN) with the identifying Sherwood symbol facing outward.
14
16.
If you need to replace certain parts of the lever assembly (stem, spring, lever, etc.), you can do
this by temporarily screwing the orifice housing 13 with the orifice 10 back onto the lever
support and assembly (without the plastic case). With these parts screwed together, the locking
nut 29 can be removed without all of the components springing apart. Remove the old part,
install the new part, and re-tighten the locking nut 29 .
17.
Hold the orifice housing 13 in one hand. Temporarily install the adjusting knob 29 and use it to
turn the orifice clockwise until it comes out of the orifice housing. Remove and discard the
O-rings on the orifice 8 9 and the orifice housing 11 12 .
18.
Grasp the oval exhaust valve 16 with your fingers and pull first one and then the other locking
nipple out of the case.
19.
Rinse all plastic and silicone parts in clean fresh water, and then blow the parts dry with
compressed air.
20.
Inspect the case 17 for any cracks. Look particularly closely at the area where the orifice
housing and the lever support clamp down. Replace the case if you find any cracks. Squeeze
marks and lines caused by compression of the case between the lever support and
orifice housing are not a reason for changing the case.
21.
Inspect the exhaust valve and the diaphragm for any tears or pin holes by stretching them
gently as you hold them up to a light. If you are repeatedly tearing diaphragms while
inspecting, you are applying too much force.
22.
Inspect the orifice 10 for any nicks, scratches, or corrosion. Polish out any corrosion or minor
scratches using a fine-grit rubberized polishing stick or a clean new pencil eraser. Remember
not to apply too much pressure when rotating the polishing stick. Check frequently to see when
the corrosion or scratch is gone and stop at that point. Blow all dust and debris out of the
orifice housing using clean compressed air.
23.
Inspect all O-ring grooves in the metal parts of the second stage. Clean all O-ring grooves with
a lint-free cloth.
NOTE: Prior to this point, you should have cleaned and inspected all parts, following proper service
procedures. Do not continue until this has been done.
6.3
ASSEMBLY OF SECOND STAGE
1
Install the exhaust valve 16 into the case by inserting the two nipples into the small holes from
the outside of the case. Reach inside the case and pull each nipple firmly with the fingers until
you hear or feel it "click" into place. Inspect the exhaust valve to see that it is properly seated.
2.
Install the lever support 26 and assembly into the case, setting it firmly between the guide ribs
in the case.
3.
Lubricate and install new O-rings 8 9 from the annual service kit onto the orifice 10 Install
the orifice back into the orifice housing 13 using your fingertip. Use the ad usting knob 4 to
turn the orifice counter-clockwise until it stops.
4.
Apply a drop of mild thread locker (such as Locktite 242® or equivalent) to the threads of the
lever support 26 .
15
5.
Screw the orifice housing 13 onto the threads of the lever assembly. Use a 3/4" wrench on the
orifice housing to tighten them together snugly (70 in. lbs, 7.8 nm).
6.
Lubricate and install new O-rings 11 12 from the annual service kit onto the orifice housing 13 .
Note that the larger of the two O-rings goes on the end of the housing closest to the case 17 .
7.
Lightly lubricate the inner bore of the swivel fitting with a recommended grease. Install the
swivel fitting onto the orifice housing.
8.
While holding the orifice housing with a 3/4" wrench, use a 5/8" wrench to install the retainer
nut 6 onto the orifice housing thread. Tighten the retainer, nut snugly (70 in lbs, 7.8 nm).
9.
Install the cir-clip 5 onto the orifice 10 .
10.
Install the adjusting knob 4 onto the orifice 10 .
11.
Install the washer 3 onto the screw 2 . Place a small drop of locking adhesive onto the
threads of the screw, and install it snugly into the orifice using a size "0" square drive
screwdriver or a Phillips screwdriver.
12.
Install the cap 8 back onto the adjuster knob.
NOTE: Do not allow lubrication (grease on finger, silicone overspray, etc.) to get on the case 17 , the
diaphragm 18 , or the retaining ring 19 . This may cause these parts to slip or deteriorate.
THE FOLLOWING STEPS (13 -18) MUST BE PERFORMED AFTER THE REGULATOR SECOND
STAGE IS SET Up.
(See Section 6.5, Set-Up of Second Stage).
13.
Install the diaphragm 18 into the case 17 so that it sits evenly on the ledge.
14.
Inspect the diaphragm retaining ring 19 . You will see a long tab and a short tab on the ring.
The short tab lines up with the short notch in the case when the ring is installed.
a. If the diaphragm is blue, the retaining ring must also be blue to give the proper fit.
b. If you are replacing a white or black diaphragm with a new blue diaphragm, the black retaining
rings will not fit properly. You must use a blue retaining ring! These rings are available from
your Sherwood Scuba distributor at no cost. You should always have several on hand.
15.
Install the proper diaphragm retaining ring into the case so that it holds the diaphragm in place.
16.
Install the cover 21 onto the case by first hooking the bottom section over the exhaust valve
area, and then working the rest of the up and over the front section. Work the cover around
with your hands until everything is in place.
17.
Using a size "0" square drive screwdriver or a Phillips screwdriver, install the cover retaining
screws 20 through the screw holes in the cover and into the holes in the case. Do not
overtighten! These screws are threading into plastic, which will hold well in service but is easily
stripped if the screws are overtightened.
16
18.
Install the mouthpiece 14 and the new mouthpiece tie 15 from the service kit.
6.4
SET-UP OF SECOND STAGE
For the following adjustments, remove the exhaust tee, cover, and diaphragm.
1
Turn the adjusting knob 4 out counter-clockwise all the way, and then in clockwise 1/8 turn.
2.
Use a 1/4" nut driver to turn the locking nut 29 counter-clockwise outward, until the lever 26 is
just loose enough so that the tip of the lever moves loosely up and down about 1/16".
3.
Attach the second stage to its accompanying overhauled and properly adjusted first stage, and
mount on an air tank filled to between 2700 and 3500 psig (186 and 240 Bar). Install an
intermediate pressure gauge into one of the low pressure ports.
4.
With the air off, use a 1/4" nut driver to adjust the nut 29 so that the lever 27 is just barely
snugged against the lever support 26 .
5.
Fully depress the lever 27 with your thumb. Slowly turn on the tank valve until you hear a
slight hissing from the second stage lever area.
6.
Release the lever. The air pressure will build up in the hose. When the intermediate pressure
gauge reads full and proper intermediate pressure, you should hear no hissing, and the lever
should not be loose against the lever support.
a.. If the lever is loose against the lever support, depress the lever and turn the adjusting nut
clockwise in 1/8 turn increments, releasing the lever between turns to check for snugness
and leaks.
b. If the lever is snug against the lever support but air is hissing, depress the lever and turn the
adjusting nut counter-clockwise in 1/8 turn increments, releasing the lever between turns to
check for snugness and leaks.
7.
When you find the point where the lever is snug against the lever support with no hissing, turn
the air on fully and depress the lever several times to work the parts in. The regulator should
not hiss after this working-in. If it does hiss, repeat Steps 6a and 6b above.
8.
With the air on, turn the adjusting knob 4 fully counter-clockwise. You should hear a slight
hissing (this is the long term storage position for the second stage). The hissing should stop
when you turn the knob clockwise about 1/8 turn.
9.
After setting the adjusting nut 29 , check the relationship between the diaphragm wear plate
and the tip of the lever assembly.
a. Install the diaphragm and retaining ring. The tip of the lever should just barely touch the
diaphragm.
b. Touch the diaphragm lightly with your finger. If there is a significant gap between the lever
tip and diaphragm, then the lever is too low. Remove the diaphragm and bend the lever
slightly upward with Sherwood's Lever Bending Tool (p/n 4005-16).
c. If the regulator hisses slightly when the air is turned on, but stops hissing when you remove
the diaphragm, then the lever is too high. Use Sherwood's Lever Bending Tool to bend the
lever slightly downward.
17
d.
Replace the diaphragm. Continue to test the gap between the lever and the diaphragm after
each bending until the lever is in the correct position.
10.
Return to Section 6.3, Step 13 of this manual (Assembly of Second Stage) to complete
assembly of the regulator.
6.5
TESTING Of SECOND STAGE
6.5.1
Inhalation effort
Check the inhalation effort of the second stage with a pan of water about five inches deep.
1
Slowly immerse the second stage with the front cover down and level. The regulator should
flow as soon as the diaphragm is a little deeper than level with surface of the water.
2.
If you use a water column or water manometer to check inhalation effort, it should not exceed
11/4" w. c. (3.2 cm) at cracking. It should drop to about 3/4" w. c. (19 cm) at one atmosphere
and a moderate flow rate. You can alter the inhalation effort within a certain range.
3.
You can increase the inhalation effort by turning the adjusting nut 29 counter-clockwise.
However, discontinue counter-clockwise adjusting when the lever 27 becomes loose against
the lever support 26 .
4.
You can decrease the inhalation effort by turning the adjusting nut clockwise. Discontinue
clockwise adjusting when air begins to hiss past the second stage poppet.
6.5.2 Exhalation Effort
1
If you do not use instruments to check the exhalation effort, the flow should feel smooth and
unrestricted.
2.
If you use a water column, it should not exceed 1/2" w.c. (1.3 cm) at one atmosphere.
3.
Brand new Exhaust Valves will sometimes adhere slightly to the case, causing a slight increase
in inhalation effort. This condition will disappear with use.
6.5.3 Leak Test
1.
Disconnect the air supply. Purge the regulator of all positive air pressure.
2.
Slowly immerse the second stage in a pan of water with the mouthpiece pointing straight up.
3.
Immerse the regulator until the water is 1/4" to 1/8" (.64 to .32 cm) from the lip of the
mouthpiece.
4.
Hold the regulator in this position for one minute and then slowly raise it out of the water.
5.
Tip the regulator mouthpiece downward and watch the inside of the mouthpiece tube. If any
water escapes from the mouthpiece tube, check for source of leakage.
18
6.5.4 External Air Leaks
1
Attach the regulator first stage to a tank short enough to totally submerge the first and second
stage in your filling station cooling water.
2.
With the tank valve still turned off, flood the second stage completely with water, and then
position it mouthpiece up.
3.
Turn the tank air valve on slowly and then watch for any leaks in the first or second stage
(except for the normal flow of air from the one-way bleed valve on the first stage). Look
particularly closely at the first stage area where the adjusting module meets the body. If the
module-to-body O-ring 18 is in the wrong groove, you will see air leaking from between the
module and the body instead of from the black one-way bleed valve system.
4.
Repair any leaks.
5.
Check for the correct positive air purge flow rate. See Section 5.4, Testing of First Stage, for
the proper method.
19
7.0 HELPFUL HINTS
7.1
TROUBLESHOOTING REGULATORS
POSSIBLE CAUSE
RECOMMENDED ACTION
HIGH INSTALLATION EFFORT AT DEPTH:
a. Inlet filter clogged.
Replace the filter.
b. No air flowing through the dry air bleed
system.
Check the flow rate coming out of the
one-way bleed valve 13 . If no or low
air flow is detected, clean the flow
element in the piston, or replace the piston.
c. High pressure air supply insufficient.
Verify the supply air pressure. Make sure
the customer had the tank valve turned all
the way on.
d. Second stage improperly adjusted.
Repeat Steps 1 through 12 in Section 6.4,
Set-Up of Second Stage.
FREE FLOWING:
a. Intermediate pressure too high.
Adjust the first stage's outlet pressure to
below 150 psig.
b. Damaged or worn HP piston seat.
Replace seat (p/n 3801-5).
This also gives high intermediate pressure.
c. Damaged or worn HP poppet stem seat.
Replace seat (p/n 978-9BN).
d. Nicked or corroded orifice sealing.
Dress the orifices in the first and second
stages with a polishing stick, or replace the
orifices.
e. Demand lever in second stage bent too high.
Adjust or replace the lever.
f. Weak spring in second stage.
Replace the spring.
g. Second stage improperly adjusted.
Repeat Steps 1 through 12 in Section 6.4,
Set-Up of Second Stage.
h. Parts in the second stage have been
severely chilled due to repeated purging
and have shrunk, allowing air to flow.
Allow the second stage to warm up to
room temperature. This chilling will not
occur in normal diving conditions.
WET BREATHING:
a. Improper clearing, or diver diving in total
head-down position.
Instruct the diver on proper clearing
technique.
20
b. Diaphragm improperly installed.
Visually check position of diaphragm.
c. Hole in the mouthpiece at tie area.
Replace the mouthpiece.
d. Hole in the diaphragm.
Replace the diaphragm.
e. Damaged exhaust valve, or edges of the
exhaust valve not firmly seated on the case.
Replace exhaust valve.
f. Crack in case.
Replace case.
HUMMING OR BUZZING DURING INHALATION:
a. Harmonic resonance between the springs
and the mass of the piston.
Refer to Section 5.2 in this manual.
Disassemble the first stage and flip the
main spring over. Change the position
of the piston in its bore. If resonance is still
present, install a new piston and spring.
NO AIR COMING FROM DRY AIR BLEED
VALVE ON FIRST STAGE:
7.2
a. Piston flow element is plugged with grease
Replace piston.
b. Body-to-module O-ring 18 in wrong groove
body, to groove between flange and threads.
Move O-ring from groove between flange and
PARTS CLEANING RECOMMENDATIONS
Regulators which see heavy use, particularly those used in salt water, often need extra effort to
remove dirt and corrosion from the parts of the regulator. Some suggested cleaning solutions
are listed at the end of this section, and there are probably many others being used
successfully. Here are a few general suggestions we can make:
1
Don't expect your cleaning solution to do all the work in a matter of seconds. If the solution
cleans extremely rapidly, it is probably too strong and is etching the finish on the parts. Use a
wooden or plastic stick or a soft bristle brush to help get rid of the thickest deposits. Take
special care not to damage orifice sealing areas. Dress the orifice sealing areas with a fine-grit
polishing stick or pencil eraser after drying the parts.
2.
Immerse only those parts which really need cleaning. With Sherwood's Dry Air Bleed system,
the interior of the first stage is always clean and dry, so the piston and spring should never
need cleaning. Immersing the clean Sherwood piston in contaminated cleaning solution can
plug the flow control element in the face of the piston, which could slow or stop the flow
through the positive air purge system.
3.
Many of the solutions used for cleaning metal parts can damage the nitrile compounds found in
O-rings. For this reason, remove all O-rings before placing parts in a cleaning bath.
4.
If the first stage moving orifice (p/n29-3106-13A) is corroded because salt water has entered
through the inlet filter, first make an attempt to clean it with a clean lint-free cloth or a soft
brush in a fresh soapy water solution. If you must use a cleaning solution in an ultrasonic
21
cleaner, isolate the orifice from the side walls and all other parts. Do this by placing the orifice
individually in a plastic cup in the cleaning hopper. This will help prevent mechanical damage
to the sealing surfaces of the orifice. Polish the orifice with a clean pencil eraser. Blow off dust
and debris after polishing.
5.
Due to its unique stainless mesh design, the inlet filter of the Sherwood SR3601 first stage can
be cleaned in the ultrasonic cleaner. Visually inspect the filter before and after cleaning. Blow
the filter dry with clean compressed air.
6.
Check the strength of any cleaning solution by placing a spare chrome-plated part in the bath
for a few minutes longer than the time you expect to leave the parts in. If visible damage to the
chrome finish results, then the solution is too strong.
7.3
COMMONLY USED CLEANING SOLUTIONS
SOLUTION
7.4
COMMENTS
Soapy Water
Good for plastic and silicone parts.
Vinegar and Water
Equal part solution
Ingredients easily available, 15
minutes approx. cleaning time.
1000 cc Water
60 gr. Sulfuric Acid
60 gr. Potassium Dichromate.
Fast acting solution that should be
made and used with care. Use
gloves and safety glasses.
Cleaning solutions
recommended by Ultrasonic
Cleaner Manufacturers.
Usually the best route to go. Check
with the manufacturer for strengths
and uses for their cleaners. Some
brand names of cleaning solutions
are "Branasonic®", "Micro®", "Oakite
31®", and "Brex®".
HANDLING TIPS
How your customers treat their regulators will directly influence the unit's function and
durability. Following are a few tips that you can pass on to your customers to help assure the
durability of their Maximus SRB3600 regulator.
7.4.1
Pre-Dive Checks
1
Check the hoses and hose connections for cuts, abrasions or other signs of damage before
mounting the regulator on the tank valve. Slide the hose protectors back to inspect the areas of
the hose normally covered. Be sure all hose connections are tight.
2.
Before turning on the tank air valve, check to make sure that the yoke nut or DIN connection is
tight and the regulator body is aligned properly, with no kinks in the hoses.
3.
Turn the tank valve on slowly and listen for leaks.
22
4.
Never lift the tank/BCD assembly by the regulator or hoses.
5.
Surface-test the regulator by breathing lightly through the mouthpiece. Depressing the purge
button above the water's surface is not a thorough method for fully testing the function of the
regulator.
7.4.2 Post-Dive Care
1
After the dive, blow all water out of the dust cap with clean dry air and place the cap securely
on the regulator inlet. On multiple tank dives, use great care to keep salt water out of the
regulator inlet when tanks are changed. Neglecting these simple procedures is the greatest
cause of corrosion and wear in scuba regulators. When used properly, Sherwood's exclusive
Dry Air Bleed System keeps all other water-borne contamination out of the first stage body.
NOTE: A tiny stream of air bubbles escaping from a small black valve on the first stage indicates that the
Dry Air Bleed System is working. The amount of air used is negligible (13-25 cc/min.). The system should be
checked periodically, particularly after servicing, to ensure that there is some air escaping from the black
one-way bleed valve. If no air is escaping from the valve when air pressure is applied to the first stage, have
the regulator inspected.
2.
With the dust cap securely in place, rinse the first and second stages in clean fresh water. DO
NOT depress the purge button before or during rinsing since this may introduce water into the
second stage and the low pressure hose. Shake or blow all excess water from the second
stage and allow the entire regulator to air-dry before storing.
3.
Store the regulator in a clean bag or storage box, away from sunlight, excessive heat and humidity.
23
8.0 TWO YEAR WARRANTY AND MAINTENANCE
INFORMATION
8.1
PROPER PROCEDURE FOR WARRANTY PAPERWORK
1.
For detailed information on the operation of the Sherwood Scuba Two Year Limited Warranty,
please refer to Sherwood Scuba Technical Bulletin #112.
2.
In most situations, no paperwork will be necessary. The customer will bring his or her regulator
in for one of its two annual servicings under the warranty. No parts other than those contained
in the standard annual service kits will be needed. Discard all old parts replaced by new kit
parts.
3.
Remove one of the colored annual service rings from the main hose protector. When you have
collected several of these rings (25-50), contact your regional distributor for a Return Goods
Authorization Number. The color of the ring will determine the credit or type of service kit you
will get in return.
4.
If you replace parts other than those contained in the standard annual servicing kit, you will
have to submit paperwork. If the regulator meets the conditions of the two-year warranty, and
the warranty is still active, fill out the Sherwood Warranty Replacement Parts Form. You must
describe the problem with the part you are returning in Part Five of the form. If this area is
blank, you will not receive credit for that part.
5.
For Sherwood Scuba regulators manufactured before Jan. 1, 1993 which still have a valid Lifetime
Limited Warranty, you, the dealer, must send the white Warranty Service Form to Sherwood. The
information will be recorded by Sherwood to determine whether or not the warranty on that particular
regulator is still in effect.
8.2
SCHEDULED MAINTENANCE
1.
To keep the owner warranty in effect, your customers must have their regulators inspected and
serviced annually (within 6 weeks before or after the anniversary of the date of purchase) by an
authorized Sherwood dealer. Failure to do so invalidates the warranty.
2.
Even with infrequent use, the regulator should be serviced annually to ensure proper
performance and satisfy warranty requirements.
3.
In Sherwood Scuba regulators manufactured before Jan. 1, 1993 which still have a valid
Lifetime Limited Warranty, you, the dealer, must send the white Warranty Service Form in to
Sherwood. The information will be recorded by Sherwood to determine whether or not the
warranty on that particular regulator is still in effect.
24
SECOND STAGE - MAXIMUS® SRB3602
ITEM #
1 .
2 .
3 .
4 .
5 .
6 .
7 .
8 .
9 .
10
11
12
13
14
15
16
17
18
19
20
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CATALOG #
3602-16B . . .
J12C04045B
19-4006-17 .
3702-16C . . .
3602-35 . . . .
1-3602-15 . .
2-3602-14 . .
G006B . . . . .
G011B . . . . .
29-3602-12 .
G014C . . . . .
G015C . . . . .
1-3602-13A .
3602-3LS . . .
3786-9W . . .
3602-6A . . . .
3602-1D . . . .
3602-4A . . . .
3602-17 . . . .
.J12C04045B
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DESCRIPTION
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Cap (for adjusting knob)
Screw
Washer
Adjuster Knob
Cir-Clip
Nut
Swivel Fitting
O-ring (orifice small end)
O-ring (orifice large end)
Orifice
O-ring (orifice housing small end)
O-ring (orifice housing large end)
Orifice Housing
Mouthpiece (Wisdom)
Mouthpiece Tie
Exhaust Valve
Case
Diaphragm
Retaining Ring (Blue)
Front Cover Retaining Screw
ITEM #
21
22
..
..
..
..
..
23
24
25
26
27
28
29
30
31
32
33
34
35
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CATALOG #
3602-2 . . . . . . . . .
3602-5APK . . . . . .
3602-5ARD . . . . .
3602-5AWH . . . . .
3602-5AY . . . . . . .
3602-5ANG . . . . .
3602-5ARG . . . . .
978-9BN . . . . . . .
29-3602-18 . . . . .
19-3602-29 . . . . .
9-3602-7 . . . . . . .
3602-20A . . . . . . .
3602-9A . . . . . . . .
J11N0440BP . . . .
25-3602-22 . . . . .
25-3602-21 . . . . .
J113481874BARC
5016-20-41 . . . . .
G010A . . . . . . . . .
G011B . . . . . . . . .
DESCRIPTION
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Front Cover
Logo Insert (Pink)
Logo Insert (Red)
Logo Insert (White)
Logo Insert (Yellow)
Logo Insert (Green)
Logo Insert (Orange)
Seat insert (black)
Stem (bare, no seat)
Spring
Lever Support
Lever
Washer (white)
Adjusting Nut
Fin (dimpled end)
Fin (plain end)
Screw for fins
Hose Assembly (41” High Flow)
O-ring (hose outlet end)
O-ring (hose inlet end)
6204 Goodrich Road
Clarence Ctr, New York 14032
www.sherwoodscuba.com
© 2001 The Liberty Group
Printed in the U.S.A on recycled paper
Sherwood Scuba, the SS symbol, Oasis, Blizzard, Magnum, Brut and Wisdom
are trademarks of Sherwood, Taylor-Wharton Gas Equipment Division of
Harsco Corp. All other names are trademarks of their respective owners.
ALL PRODUCTS SUBJECT TO CHANGE WITHOUT NOTICE.
Part Number S-MAN2002
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