JFD B44771, Руководство по эксплуатации и обслуживанию

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68 OM131
Chapter 4 P1939-OM-131 R11
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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.
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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.