Sherwood MAXIMUS SRB3600 Maintenance Guide

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Assembly & Maintenance Guide
(SRB3600)
®
®
REGULATORS
FIRST STAGE - MAXIMUS® SRB3600
ITEM # CATALOG # DESCRIPTION
. . . . . . . . . . . .SRB3601 . . . . . . . .First Stage Complete
1 . . . . . . . . . . .5105-70 . . . . . . . . .Handwheel Assembly
2 . . . . . . . . . . .3504-6 . . . . . . . . .Star Washer
. . . . . . . . . . . .J2790056B . . . . . .Filter Retaining Ring
3 . . . . . . . . . . .1390-7 . . . . . . . . .Filter
4 . . . . . . . . . . .29-3106-13A . . . . .Moving Orifice
. . . . . . . . . . . . . . . . . . . . . . . . . . .(bare, no O-rings)
5 . . . . . . . . . . .19-8010-8 . . . . . . .Disc Spring
6 . . . . . . . . . . .MS28774-007 . . . .Backup Ring (for Moving Orifice)
7 . . . . . . . . . . .G007A . . . . . . . . . .O-ring (for Moving Orifice, 2 ea.)
8 . . . . . . . . . . .3801-20 . . . . . . . . .Dust Cap
9 . . . . . . . . . . .1-1665-17 . . . . . . .Yoke Nut
10 . . . . . . . . . .2-3801-4 . . . . . . . .Yoke
11 . . . . . . . . . .1-3105-6 . . . . . . . .L.P. Port Plugs
12 . . . . . . . . . .G011B . . . . . . . . . .O-ring (for L.P. Port Plugs)
13 . . . . . . . . . .3106-6 . . . . . . . . .One Way Bleed Valve
14 . . . . . . . . . .J07-S1024-08DB . .Locking Allen Screw
15 . . . . . . . . . .2-3601-1A . . . . . . .Main Body
16 . . . . . . . . . .G904A . . . . . . . . . .O-ring (for H. P. port plug)
17 . . . . . . . . . .1-3405-4 . . . . . . . .H. P. Port Plug
18 . . . . . . . . . .G024A . . . . . . . . . .O-ring (fits on large end of Body)
19 . . . . . . . . . .2-3601-7 . . . . . . . .Pressure Adjusting Ring
20 . . . . . . . . . .G025A . . . . . . . . . .O-ring (fits on Pressure Adj. Ring)
21 . . . . . . . . . .3801-12B . . . . . . .Main Spring
22 . . . . . . . . . .G007A . . . . . . . . . .O-ring (for small end of piston)
23 . . . . . . . . . .3801-5 . . . . . . . . .Piston Seat
24 . . . . . . . . . .25-3601-13 . . . . . .Piston (Bare, no O-rings or seat)
25 . . . . . . . . . .G022A . . . . . . . . . .O-ring (for large end of Piston)
26 . . . . . . . . . .2-3601-8 . . . . . . . .Cap
27 . . . . . . . . . .3601-15 . . . . . . . . .Cap Label
TABLE OF CONTENTS
Page
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
2.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.1 General Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.2 First Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2.3 Second Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3.0 O-rings Reference Chart . . . . . . . . . . . . . . . . . . . . . . . . . . .3
4.0 Special Feature of the Maximus SRB3600 . . . . . . . . . . . . .4
4.1 First Stage Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4.2 Second Stage Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
5.0 First Stage Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5.1 Tools Required for First Stage Servicing . . . . . . . . . . . . . . . .5
5.2 Disassembly of First Stage . . . . . . . . . . . . . . . . . . . . . . . . . .6
5.3 Assembly of First Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5.4 Testing of First Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6.0 Secoond Stage Procedures . . . . . . . . . . . . . . . . . . . . . . . .13
6.1 Tools Required for Second Stage Servicing . . . . . . . . . . . . . .13
6.2 Disassembly of Second Stage . . . . . . . . . . . . . . . . . . . . . . . .13
6.3 Assembly of Second Stage . . . . . . . . . . . . . . . . . . . . . . . . . .15
6.4 Set-Up of Second Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
6.5 Testing of Second Stage . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
7.0 Helpful Hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
7.1 Troubleshooting Regulators . . . . . . . . . . . . . . . . . . . . . . . . . .20
7.2 Parts Cleaning Recommendations . . . . . . . . . . . . . . . . . . . . .21
7.3 Commonly Used Cleaning Solutions . . . . . . . . . . . . . . . . . . .22
7.4 Handling Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
8.0 Two Year Warranty and Maintenance Information . . . . . . .24
8.1 Proper Procedure for Warranty Paperwork . . . . . . . . . . . . . .24
8.2 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
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
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.
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.
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.
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Key Features

  • Underarm hose routing
  • Externally adjustable
  • Positive air purge
  • High flow mouthpiece
  • Oval exhaust valve
  • External adjustability
  • Moving orifice balancing
  • Flow-by piston
  • Dry Air Bleed
  • Downstream poppet

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Frequently Answers and Questions

What is the maximum operating depth for the Sherwood MAXIMUS SRB3600 regulator?
The maximum certified depth for the Sherwood MAXIMUS SRB3600 is 50 meters.
What type of first stage does the Sherwood MAXIMUS SRB3600 regulator have?
The first stage is an externally adjustable, flow-by piston with Moving orifice balancing, and Positive Air Purge (Dry Air Bleed).
What is the purpose of the underarm hose routing on the second stage?
The underarm hose routing protects the hose from snagging on obstacles and allows for better head movement, reducing jaw fatigue.
What are the recommended lubricants for the Sherwood MAXIMUS SRB3600 regulator?
The recommended lubricants are LTI Christo-Lube® MCG#111, Dow Corning #111 Compound®, Parker Super O-Lube®, or equivalent.