68
OM131
Chapter 4
P1939-OM-131 R11
N
OTE
The screws securing the mounting plate (Fig 4.7, Item 37) to the regulator body (Fig 4.7, Item 1)
should not be removed as they are secured in place using Studlock (Loctite 601).
a.
Remove the banjo bolt (Fig 4.7, Item 5) on the two stage regulator and release the regulator
completely.
b.
It should now be possible to remove the regulator from the Backpack.
2.
Service the regulator’s first stage as follows:
a.
Unscrew the first stage end cap (Fig 4.7, Item 3) and remove the spring (Fig 4.7, Item 20).
b.
Wrap the first stage piston in thin card as a protective sleeve and use long nose pliers to
carefully withdraw the first stage piston (Fig 4.7, Item 4). Check the seat for wear and replace
as necessary.
c.
Replace all O-rings. Lightly lubricate O-rings before re-assembly using an oxygen compatible
lubricant (e.g. Christo-lube fluorinated grease - Divex Part No SM034).
d.
Re-assembly is the reverse of the above.
3.
Service the regulator’s second stage as follows:
a.
Unscrew the end cap (Fig 4.7, Item 2,) and remove the spring adjustment plate (Fig 4.7, Item
7) the spring support plate (Fig 4.7, Item 6) and the spring (Fig 4.7, Item 19).
b.
Remove the slip ring (Fig 4.7, Item 10) the diaphragm (Fig 4.7, Item 31) and the diaphragm
support plate (Fig 4.7, Item 11).
c.
Unscrew and remove the valve seat retainer (Fig 4.7, Item 12).
d.
Remove the valve pin (Fig 4.7, Item 16).
e.
Remove the spring (Fig 4.7, Item 38).
f.
Remove valve seat from the retainer using thin rod through the holes in the seat retainer.
g.
Check the valve seat (Fig 4.7, Item 13) for wear and replace as necessary.
h.
Replace all O-rings. Lightly lubricate O-rings before re-assembly using an oxygen compatible
lubricant (e.g. Christo-lube fluorinated grease - Divex Part No SM034).
i.
Re-assembly is the reverse of the above.
N
OTE
Ensure that the square edge on the seat is the sealing face for the valve pin, when installing a new
seat in the seat retainer.
4.
Service the spool valve as follows:
a.
With the two stage regulator removed from the SLS System.
b.
Remove the circlip, discard and replace. (Fig 4.7, Item 32).
c.
Remove the grub screw (Fig 4.7, Item 33).
d.
Unscrew the cap (Fig 4.7, Item 15).
e.
Allow the ball bearings (Fig 4.7, Item 36) to drop out.
Summary of Contents for Divex SLS Mk IV
Page 2: ...Intentionally Blank...
Page 4: ...ii OM131 Approval Sheet P1939 OM 131 R11 Intentionally Blank...
Page 6: ...iv OM131 Preface P1939 OM 131 R11 Intentionally Blank...
Page 8: ...vi OM131 List of Abbreviations P1939 OM 131 R11 Intentionally Blank...
Page 10: ...viii OM131 Warnings P1939 OM 131 R11 Intentionally Blank...
Page 12: ...x OM131 Table of Contents P1939 OM 131 R11 Intentionally Blank...
Page 15: ...OM131 3 P1939 OM 131 R11 Chapter 1 Fig 1 1 SLS System Mk IV...
Page 16: ...4 OM131 Chapter 1 P1939 OM 131 R11 Fig 1 2 SLS system layout...
Page 32: ...20 OM131 Chapter 2 P1939 OM 131 R11 Fig 2 4 Two stage regulator Fig 2 5 Spool valve...
Page 42: ...30 OM131 Chapter 2 P1939 OM 131 R11 Intentionally Blank...
Page 53: ...OM131 41 P1939 OM 131 R11 Chapter 3 Fig 3 3 Hose Lanyards...
Page 54: ...42 OM131 Chapter 3 P1939 OM 131 R11 Fig 3 4 SLS System Mk IV Rear View...
Page 55: ...OM131 43 P1939 OM 131 R11 Chapter 3 Fig 3 5 SLS System Mk IV Front View...
Page 64: ...52 OM131 Chapter 3 P1939 OM 131 R11 Intentionally Blank...
Page 82: ...70 OM131 Chapter 4 P1939 OM 131 R11 Fig 4 7 Annual Maintenance Two Stage Regulator...
Page 86: ...74 OM131 Chapter 4 P1939 OM 131 R11 Fig 4 8 Annual Maintenance Single Stage Regulator...
Page 109: ...OM131 97 P1939 OM 131 R11 Chapter 5 Fig 5 2 Backpack Assembly Drawing P1939229S1...
Page 111: ...OM131 99 P1939 OM 131 R11 Chapter 5 Fig 5 4 Scrubber Housing Assembly Drawing P1939131S1...
Page 118: ...106 OM131 Chapter 5 P1939 OM 131 R11 Fig 5 9 SLS System Mk IV Gas Schematic Drawing P193940S1...
Page 123: ...OM131 111 P1939 OM 131 R11 Chapter 5 Fig 5 14 SLS System Mk IV Bottle Assembly...