RIX Industries MAN-2PS2B-N2 Page 15
4. Install the valve seat into the 2
nd
stage head valve pocket, aligned with the pin and pushing
down squarely to engage the O-ring properly.
5. Install pin and O-ring in the installed valve seat.
6. Install the suction reed, aligned with the pin. Ensure the free end of the reed flap will sit
over the 4 round blind holes on the valve seat. Installing the reed upside down will result in
improper valve operation.
7. Install valve stop and final O-ring in the 2
nd
stage valve pocket.
8. Install the head per Section 7.3.
7.5 Compression Cylinders
The compression cylinders must be removed to service the rings and pistons. The 2
nd
stage has a
removable liner. There is no scheduled maintenance required on the cylinder or liner.
Remove the 1
st
and 2
nd
stage compression cylinders referencing Figure 2 and using the following
procedure:
1. Remove the head per Section 7.3
2. Rotate the flywheel to position the 1
st
stage piston at bottom dead center.
3. Slide 1
st
stage cylinder off piston, using caution to prevent side loading the piston/rod
assembly and damage to the shims. It may be necessary to either lean back or elevate the
compressor to complete this task.
4. Remove 2
nd
stage guide cylinder and liner.
5. Clean and inspect the cylinder bore for wear or damage (see Section 5.8). Wear must be
within the tolerance specified in Section 7.10.
Reinstall the compression cylinder and liner in the reverse sequence of removal.
7.6 Compression Rings
To replace the compression rings, reference Figure 2 and follow the instructions below:
1. Remove the heads and cylinders per Sections 7.3 and 7.5. The 2
nd
stage piston will be lifted
out with the 2
nd
stage liner; remove the piston from the liner with a soft punch.
2. Remove and discard the used compression rings, expanders, and rider rings. An O-ring pick
(P/N 88-5812) is helpful for removing used rings.
To reinstall the piston, follow the instructions below:
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