MK17 revision may 2005 3 / 3
For the DIN version: Remove with the o ring extractor the "tank" o ring, then with the
4 mm Allen key unscrew the filter retainer. Remove the spring and the filter. Firmly
hold the field handle tool in the vice and use the 6 mm socket extension to unscrew
with care the DIN knob retainer. Remove the o-ring and the knob. Put aside the o
ring (01.050.138) for inspection.
5. Remove the bumper cap on the fins side with the small screwdriver.
6 Unscrew with the multifunction or 1
st
stage chamber tool the diaphragm retainer.
Carefully remove the washer, the silicone diaphragm and the load transmitter.
7 Unscrew the spring adjustment screw with the 6 mm. Allen key. Remove the nylon
washer in the spring adjustment screw and the spring.
Note! : The diaphragm disc will not come out trough the spring adjustment screw
hole.
8 With the 32 mm spanner or the adjustable spanner, unscrew carefully the dry ambi-
ent chamber, remove the diaphragm disc and the 2 washers with the o ring extrac-
tor.
9 With the o ring extractor carefully remove the diaphragm, the thrust disc, the metal
disc insert and the pin.
10. Remove the bumper cap on the Allen key side of the 1
st
stage with the small
screwdriver.
11. Unscrew the balance chamber with the 6 mm Allen key. Remove the 2 balance
chamber o rings on the outside, the spring, the spring centring washer, the balance
chamber o ring and the bushing ring from the inside.
11. Remove the spacer, the guide from the HP poppet.
12. Use the MK 16 tool and lightly push the tool against the orifice while blowing into
the 1
st
stage body from the opposite side (diaphragm side) with the blowgun to
carefully remove the orifice. With the o ring extractor tool, remove the o ring from
the orifice.
13. Remove the field handle tool.
PARTS CLEANING
WARNING: refer to parts cleaning procedure.
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