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4. Place the spring (39) over the poppet shaft. Place the
lever bracket over the poppet and compress the poppet
spring to fully expose the poppet threads. Place the washer
(34) over the poppet threads, then thread the locknut (33)
onto the poppet until the first thread is engaged.
15. using your thumb, compress the poppet. Tilt the lever
assembly so the washer falls against the locknut. Place the
feet of the lever into the lever support such that the lever legs
are over the flat side of the lever support.
16. using a 1/4" nutdriver, tighten the locknut until three full
threads are showing.
17. secure the lever support to the body with two screws
(36). Tighten the screws using a 3mm hex key (exact torque
of 12±2 in/lbs).
18. Place the yoke (50) over the first stage inlet boss. Thread
the retaining nut (53), wrench flats facing upward, onto the
inlet boss. Secure the first stage in a vise using the vise
mounting tool (pn 5116230).
19. Place the retaining nut socket (PN 111001) over the
retaining nut. Attach a socket extension to a ft/lb torque
wrench. Pass extension through the top of the yoke and
attach it to the socket. Tighten the retaining nut to 20±2 ft/
lbs. Remove the first stage from the vise and remove the vise
mounting tool.
lever feet
20. Install the dust cap (51) onto the yoke screw (52) and
under washer
thread the yoke screw into the yoke.
21. Install new, lubricated o-rings on all the port plugs. Install
the hP port plug and only one of the LP port plugs, leaving
one port open.
WARNING:
Before adjusting the Mp in the next step,
make sure your test pressure gauge is equipped with
an overpressure relief valve. if the gauge does not
have an overpressure relief, you will need to attach
a second stage to the other low pressure port to act
as a pressure relief in case of a high pressure failure.
Failure to have an overpressure relief may lead to
injury.
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