6.
Insert the four Cap Screws (Top Plate) through the
Top Plate and thread into the Pilot Base. Tighten to
25±2 ft-lbs (34±2.7 N-m).
a.
If removed, thread Compression Screw Lock
Nut clockwise onto Compression Screw.
7.
Thread Compression Screw into top of Bonnet
until the bearing point begins to protrude through
Bonnet.
8. Place Spring Washers on the ends of the Spring.
There is not a top or bottom Spring Washer unless
the Lifting Lever option is installed.
9. If pilot has Lifting Lever Option:
a. Place Spring over Lifting Stem and place on
Bottom Spring Washer.
b. Place Top Spring Washer on top of Spring
and then place the entire assembly on top
of Pilot Base assembly ensuring that the
spherical radius located on the Bottom
Spring Washer engages with spherical nose
on Main Piston.
10. Install the Bonnet over the Spring and Spring
Washer Assembly. Thread the Bonnet onto the Top
Plate. Tighten wrench tight. Install and tighten Set
Screw.
11.
Turn Compression Screw clockwise until
dimension has been reached that was noted during
disassembly.
12.
Tighten Compression Screw Lock Nut wrench
tight.
13. For Lifting Lever Option, reinstall Release Nut
and Release Lock Nut onto Lifting Stem. Turn
clockwise until it matches the dimension noted
during disassembly.
14. Install Filter Plug into Bonnet vent hole (if
removed).
15. Install Pipe Plug (Pilot Valve) in port above vent
hole (if removed).
16.
Refer to Field Test Connection / Backflow
Preventer Option (Section XXII.A) for reassembly
of Field Test Connection.
C. Assembly of 39MV07
1. Making the Main Pilot.
2. Making the Adjuster Assembly,
This assembly consists of:
1 – Adjuster Bottom
1 – Adjuster Top
1 – Spring Seal (Adjuster Top)
1 – O-Ring (Adjuster Top)
1 – O-Ring (Adjuster Bottom)
a. Check the Adjuster Top for burrs at the spring
seal lead in chamfer. Remove any burrs using
a polishing cloth.
b. Install Spring Seal (Adjuster Top) into Adjuster
Top using insertion tool as shown in Figure 92.
i.
Lubricate Spring Seal (Adjuster Top)
with silicone grease.
ii. Install Spring Seal (Adjuster Top) onto
Plunger Cylinder with spring facing
away from Plunger Cylinder.
iii. Insert Plunger into Plunger Cylinder
until Plunger lightly contacts Spring
Seal (Adjuster Top).
iv.
Insert Funnel Tube, chamfer side first,
over the Plunger and Spring Seal
(Adjuster Top). Stop when Spring Seal
(Adjuster Top) is about half way inside
the Funnel Tube as shown in Figure 56.
v. Remove Plunger.
vi. Insert Funnel Tube Assembly into
Adjuster Top until Funnel Tube contacts
Spring Seal (Adjuster Top) gland.
vii.
Push down on Plunger cylinder to insert
Spring Seal (Adjuster Top) into Adjuster
Top as shown in Figure 57.
viii. Remove Funnel Tube Assembly.
ix. Inspect Adjuster Top to make sure
that Spring Seal (Adjuster Top) did not
flare out during installation and that the
Spring Seal (Adjuster Top) is oriented
as shown in Figure 58.
c.
Thread Adjuster Top clockwise onto Adjuster
bottom and torque to 27±2 ft-lbs (37± 2.7 N-m).
d. Lubricate Main Piston stem and cycle Main
Piston through Spring Seal (Adjuster Top) five
times.
Spring Seal
(Main Piston)
Top Plate
Figure 61: Top Plate (39PV37)
XIX. Reassembly of Pilot Valve (Cont.)
Consolidated 2900 Series Generation II POSRV Instruction Manual
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