FSR/FST First Stage Technical Maintenance Manual
7
1. Install o-ring (13) onto the crown (14). Slide the crown onto the
seat installation tool (pn 109437) with the sealing edge against
the plastic handle of the tool. Insert the crown into the body
and press it into place. Pull the tool out and use the blunt end
to make sure the crown is properly seated.
2. Turn the body (12) over
so the MP side is facing
upward. Drop the valve lifter
(11) through the center hole.
5. Thread the diaphragm clamp (7) onto the body (12) until hand
tight. Using a 6mm hex key, thread the adjustment screw
(5) into the diaphragm clamp until the last two threads of the
adjustment screw are still visible.
REASSEMBLY PROCEDURE
3. Press a new diaphragm
(10) into the body. Run your
nger around the edge of
the diaphragm to make sure
it is properly seated.
4. Place the spring carrier (9), at side down in the center of the
diaphragm (10). Set the main spring (8) on the spring carrier.
6. Thread a vise mounting tool
into the HP port and secure
into a bench vise. Using
the pin spanner, tighten the
diaphragm clamp (7) until it
stops (metal meets metal).
Installation of Diaphragm Clamp (TX & ATX Series)
Installation of Diaphragm Clamp (XTX, Black Pearl &
Tungsten Series)
7. Thread a vise mounting tool into the HP port and secure into a
bench vise. Using a 34mm thin wrench (pn AT47), tighten the
diaphragm clamp (7) until it stops (metal to metal). Slide on
the molded ring (6).
NOTE: The thickness of the wrench must not exceed
11mm or it will not t between the thread and the ang.
8. Install o-ring (17) into the end of the HP balance plug (19).
Install o-rings (13 & 18) onto the outside of the HP plug.
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