Repair Kits Available By Part Number Section 2 Page - GAMECO

Seat Disc and Bleeder Replacement – Figure 4B
1. Remove the cap screws (#23) by turning counterclockwise.
2. Separate the seat disc holder (#22), stem (#24), and pilot piston
(#26) from the main piston assembly.
3. Remove and replace the seat disc (#18) if required.
4. Remove the bleeder assembly (#20) by turning it counterclockwise
while holding the stem (#24) in position.
5. Before reassembly, apply a coating of light grease to the bleeder
assembly and the seat disc holder gasket.
6. Apply two drops of loctite thread seal to the male threads
on the end of the stem.
7. Replace the bleeder assembly and spring (#19) if required.
8. Replace the seat disc holder gasket (#21) if required. This gasket
MUST be centered on the seat disc holder when reassembled
in order to make an effective seal.
9. Align the seat disc holder with the main piston and tighten the
cap screws by turning clockwise. Follow tightening sequence
indicated in Figure 2.
Servicing Primer Valve (#9) and Stem Assembly (#35) – Figure 4D
1. If required, access can be gained to the primer valve by turning
the bushing counterclockwise and disengaging the primer valve
assembly from the valve body.
2. The stem o-ring (#34) can be serviced by fi rst removing the
roll pin (#33). Then pulling the primer valve out through the
bushing.
3. The bushing gasket (#32) can then be removed from the back of
the bushing and replaced.
4. Remove the stem assembly by turning the stem (#31) and stem
guide (#30) counterclockwise and removing. The seal (#29) and seat
(#28) can then be accessed and changed, if required.
5. Before reassembly, blow compressed air in through opening
in the valve body for the primer valve. This will clear the valve
priming channel of any debris. See Figure 3.
If the Priming Channel is not clear, the valve will not
function properly.
6. Apply a light coating of grease to all sealing surfaces and
threads.
Figure 2
Cap Screw Tightening Sequence
1 - 3 - 2 - 4
4 1
Figure 3
Priming Channel
Air Fitting
Air
3 2
Servicing the Piston Retainer Assembly (#15) – Figure 4A
1. If required, remove all of the o-rings and gaskets (#11-14) from the
piston retainer assembly. Check the lower valve body of fl omatic
for corrosion. Clean the female threads on the lower valve body
and remove any foreign material from the cavity.
2. Apply a light grease to the replacement seals and reinstall
in the assembly.
Servicing Packing Nut (#40) and Indicating Stem (#36) – Figure 4D
1. If required, remove the o-ring (#39), and v-ring (#38), from
the packing nut.
2. If required, remove the tefl on bushing (#37) from the indicating
stem.
3. File any sharp edges or burrs from the end of the indicating
stem. The indicating stem must be thoroughly cleaned, then
polished using a fi ne emery cloth. If there are any nicks or
gouges along the stem it should be replaced because it will
leak. Lubricate the entire stem using a light grease, including
the pin on the lever arm assembly (#44).
4. Prepare the packing nut for reassembly by thoroughly cleaning
and inspecting all sealing surfaces and threads. Lubricate
the entire packing nut except for the male threads using
a light grease.
5. Install a new o-ring (#39) on the outside of the packing nut.
6. Lubricate the v-ring (#38) cavity on the inside of the packing nut
and install a new v-ring with the groove of the v-ring facing inward
when the assembly is installed in the valve body.
7. Place the tefl on bushing (#37) into the packing, lubricate the
inside of the bushing.
Opening for
Primer Valve
Reassembly – Figures 4A, 4B, and 4D
1. Apply loctite to the male threads on the packing nut (#40) and
screw the assembly into the valve body.
2. The indicating stem (#36) can then be installed by lowering
it into the valve body from the top, and then pushing it out
through the packing nut.
3. Turn the indicating stem several times to evenly distribute
the lubrication.
4. Lower the piston and seat disc assembly down into the valve,
the lever arm assembly (#44) must fi t into the groove in the
pilot piston (#26).
5. Apply loctite to the male threads on the piston retainer
assembly (#15), screw the assembly into the cavity in the
lower valve.
6. Place the screen fi lters in the top of the piston assembly. Place
the return spring on top of the fi lters.
7. Lubricate the inside surface of the cylinder (#4). Screw the
cylinder on to the valve body hand tight, make sure that the
return spring is centered in the cylinder.
8. Tighten the set screw (#5) into the cylinder to hold it in place.
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