Aqua Lung MISTRAL SECOND STAGE Руководство по техническому обслуживанию - Страница 7

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Mistral Second Stage Technical Maintenance Manual

4. Using the crown adjusting tool (p/n 125727), engage the

slotted head of the crown (16) and drive it in clockwise as

far as the tool will allow. If the tool is not available, use a

medium blade screwdriver to drive the crown in as far as it

will go and then back it out 3 revolutions.

5. Press a new LP seat (15) into the cavity in the head of the

poppet (14), with the smooth side facing out.

NOTE:

It is essential to use a spare LP seat

in order to prevent damage to the new seat

while performing the following steps of the

reassembly procedure.

6. Stand the inlet ﬁ tting (19) vertical on a ﬂ at surface with the

sealing edge of the crown (16) facing up inside. Lay the

previously used LP seat (15) inside the inlet ﬁ tting over the

sealing edge of the crown.

7. Place the poppet bearing (12) over the pin of the

extraction tool with the square feature facing up. Guide the

pin of the tool into the open end of the valve body (11) and

out through the square hole in it's center. While sighting

through the top of the valve body, rotate the tool as needed to

align the square feature of the poppet bearing with the square

hole, and press the tool upward to seat the bearing securely

in place. When ﬁ nished, check to ensure that the top of the

poppet bearing is ﬂ ush with the top of the valve body.

8. Stand the poppet (14) on its head inside the top of the inlet

ﬁ tting (19) and on top of the old LP seat. Place the spring (13)

over the poppet shaft (14).

9. Hold the inlet ﬁ tting (19) secure and mate the valve body

(11) with poppet, bearing down over the poppet shaft (14).

Press the valve body downward to compress the spring while

turning it clockwise to engage the threads of the inlet ﬁ tting.

Continue turning it slowly until the threaded portion of the

poppet shaft stands outside the poppet bearing (12).

CAUTION :

If resistance is felt, immediately

stop and unscrew the valve body from the

inlet ﬁ tting. To check the alignment of the

poppet shaft and poppet bearing. Excessive

force and misalignment will otherwise result

in damage to the poppet bearing, requiring

its replacement.

10. Lay the arms of the lever (10) inside the groove of the

valve body (11), straddling the poppet shaft (14), so that the

curved portion of the lever faces away from the air outlet hole.