Service manual

8 Service Manual Mikron 2nd Stage
19. Close the air supply and purge the 2
nd
stage. Remove
the adjustment tool. Fit the diaphragm (127816). Press
well in all around its edges to ensure that it is correctly
positioned. Fit the washer (127815) and then using the lug
spanner (129198) screw in the diaphragm nut (127814 or
127832).
20. After tightening the diaphragm washer, check the
diaphragm is well positioned by pulling on several
directions. Check the diaphragm is not stuck, if not refit it.
21. Engage the front cover (127836 or 127838 or 127848) in
the ring cover (127843), and then screw it on the case.
Using a lug spanner (129198) screw the ring cover
(127843) until its stop.
22. Using a 11/16” spanner, maintain the nut (127818) and
then tight the hose nut to 0.3m.kg.
23. Fit the mouthpiece (123697 or 123698 or 127826) on to
the casing. If it is a Comfobite mouthpiece check that the
support is at the top. Fit the mouthpiece collar (129154)
into the groove provided. The collar lever should be
underneath and positioned on the hose side.
24. Fit the adjusting knob (127821)
25. Maintain the knob (127821) in the MAXI POSITION
and tighten the plug (127824 or 127833 or 127846)
to 0.5 N.m using a dynamometer screwdriver
(equipped with a 3mm Allen key).
FINAL CHECKS
1. Pressurise the regulator to 200 bar (±10 bar)
Note: if you have a test bench, carry out these
tests before fitting the mouthpiece and the knob
with its plug. Test instructions are given in the
section Final Checks.
NOTE: The Cam 127822 must be unscrewed
completely until its stop to be able to tight
correctly the Plug 127824 or 127833 or
127846.
MINI
NOTE: The adjusting knob 127821 must be
maintained when tightening the
Plugs (127824 or 127833 or 127846).