Sherwood Scuba maximus SRB5600 Assembly & Maintenance Manual page 16

7. Using a small slotted screwdriver, remove the cir-clip
8. Use a 5/8" wrench to remove the retainer nut
the orifice housing with a 3/4" wrench while doing this.
9. Remove the swivel fitting
scratches that might cause leaks.
10. Remove the cover
the top lip of the cover to curl outwards. Use fingers to grasp the exposed lip of the cover.
Slide the cover assemble off of the orifice housing.
11. Remove the diaphragm retaining ring
12. Gently remove the diaphragm
Gently stretch the diaphragm and look for tears or pinholes. If any are found, replace the
diaphragm. Otherwise, the diaphragm can be reused. If you are repeatedly tearing diaphragms
during this visual inspection, you are using too much force. You cannot return diaphragms torn
in this way for warranty credit.
13. Remove the adjusting lever
retainer clip , off the adjusting lever. Slide the adjusting lever out of the case
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adjusting lever and o-ring
relubricated, and reused with the o-ring in place. However, if the o-ring
wear it can be removed and discarded at this time. Use a blunted dental pick or similar object
to remove the o-ring if removal is necessary. Take care not to gouge the o-ring groove during
this procedure.
14. Use a 6" or 8" (15 or 20 cm) adjustable wrench to loosen and remove the orifice housing
The case assembly has been reinforced to allow doing this without holding the lever support
with another wrench.
15. Remove the lever support
still attached. There is no reason to remove these fins from the lever support during a normal
service interval. If the fins do have to be removed for some reason, a small Phillips ACR
screwdriver can be used to remove and replace the screws
16. Normally, along with cleaning, you will simply need to change the poppet stem seat insert
and polish the orifice seal
change the stem seat insert
object, carefully remove the old seat insert. Put the new seat insert on a clean flat surface and
lower the poppet cavity (from which the old seat insert was removed) over the new seat insert.
The new style black molded seat (p/n 978-9BN) should be installed with the identifying
Sherwood symbol facing outward.
17. If parts of the lever assembly (stem, spring, lever, etc.) need to be replaced, it can be done with
a minimum number of tools. With the original poppet seat
installed in the orifice housing
(without the case) until the lever begins to droop. Use a #10 Torx screwdriver to remove the
screw . Unscrew the orifice housing and lever support, and the poppet and spring will be
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exposed for replacement. Reverse the procedure to install the new parts. Remember to use the
old seat to perform this procedure since the seat is likely to be damaged due to excess friction.
Install a new seat
10 from the orifice housing. Inspect the inner sealing surfaces for
17 from the case by pushing on the front top edge firmly enough to cause
18
from the case using fingers.
19 from the case. Hold the diaphragm up to a light source.
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from the case by using a small slotted screwdriver to slide the
24 can usually be cleaned by hand in warm soapy water,
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and assembly from the case with the heat transfer fins
, to restore the second stage to maximum performance. To
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, leave the lever assembly together. With a pick or similar
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13 , screw the orifice housing and lever support together
29 when you have reassembled the lever assembly.
13
4 from the adjusting orifice
from the orifice housing
9
24
.
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in place, and the orifice
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16 .
13 . Hold the base of
20 . The
shows excessive
13
.
34 35
&
29
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