5
13. By using a face spanner or tool PN 43.420.012 grasp the
tabs on the flow vane ring (31) and unscrew it from the
case by rotating counter clockwise. The sub
-
assembly
consisting of the flow vane ring (31), two o
-
rings (28
and 30), the flow vane (29), the hex adjuster screw (27)
and possibly o
-
ring (34) is now loose.
Note: the spring (25) and the spring support (26) are
also now loose. Use care to avoid dropping parts with
the next step.
Holding the case upright, lift the assembly from the
case. Then carefully turning the case upside down,
collect the spring (25) and spring support (26) in your
hand as they fall out. The poppet (stem assembly) (49)
may also fall out.
14.
Then, grasping the flow vane ring (31), pull it apart
from the flow vane (29). Remove o
-
ring (30) and
o
-
ring (28). Using a 5mm Allen key, engage the
adjustment screw (27), loosen it
clockwise
and remove
from the flow vane from below. Its o
-
ring (34), if it has
not fallen out before, will now be loose. Remove it.
15.
Pushing in an upward direction against the square
deflector at the rear of the housing (18), push the
housing up and out of the case.
If it did not fall out in step 13. above, the poppet
(stem assy) (49) is accessible and can be carefully
removed with a thumb and index finger or small
forceps.
16.
Push the housing support (8) in the direction of the LP
hose inlet (i.e., from the opposite side). Push it out of
the case and remove the o
-
rings (7) with a brass or
plastic pick, being careful not to score the o
-
ring
groove.
17.
Use a pin punch or 2mm hex key to remove the exhaust
tee pin (12). The exhaust tee (14) is now removable
from the case.
Note: the exhaust tee is thinner and more delicate than
the case. To avoid breakage, use care in sliding the ears
of the tee around and off the case.
18.
The exhaust valve (13) is now accessible and can be
replaced, if necessary. Inspect the valve for complete
sealing against the case. Inspect the edge for damage.
Confirm that the barb is locked inside the spokes on the
case. The exhaust valve is not normally removed at
annual service, unless damaged.
DISASSEMBLY IS NOW COMPLETE
