Service manual

6 Service Manual Mikron 2nd Stage
Before starting to re-assemble the regulator,
make sure that all replacement parts have
been cleaned and lubricated in accordance
with Procedure A : Cleaning and Lubricating
on page 13
.
RE-ASSEMBLY PROCEDURE
1. If the exhaust valve has been removed, pass the valve
tail through the hole in the casing (from the outside) and
pull the tail lightly into the casing. If it is a new valve, cut
off any excess length leaving about 5mm.
2. Fit the deflector and check that the 2 clips are in the right
position.
3. Fit a new lubricated O-ring (AP2041) on the shuttle valve
(AP2036). Fit the valve seat (AP2034). Lubricate the O-
ring (AP2041) correctly.
4. Fit the spring (AP2021) then the counter balance chamber
(127607) on the shuttle valve.
5. Maintain the lever in the upper position. Fit the assembly
(shuttle valve – spring – counter balance chamber) into
the valve spindle taking care to position the tabs of the
shuttle valve facing the tabs on the lever.
6. Fit a new lubricated O-ring (124707) on the adjusting
screw (127823).
Screw totally the adjusting screw (127823) into the cam
(127822) then come back one turn and 3/4 turn.
7. Fit a new lubricated O-ring (213716) on the cam
(127822). Screw totally the cam (127822) into the valve
spindle screw (127819) until its stop
(the thread must
be visible).
8. Fit a new lubricated O-ring (121130) on the valve spindle
screw (127819).
9. Screw of a single turn only the valve spindle screw
(127819) on the valve spindle (127817).
10. Fit the assembly (valve spindle + adjusting mechanism)
into the casing until the lever is completely inside the
casing.