Poppet Repair - Graco N22DT0 Instructions-Parts List Manual

Poppet Repair

1. Stop the pump at the middle of its stroke. Relieve
the pressure, page 9.
2. Disconnect the air line to the motor.
3. See F . 8 on page 20. Pry off the top cover (30).
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4. See F . 13. Unscrew the poppet assemblies (12).
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The small o-rings (12c, 12d) may not come out with
the poppet assemblies. Be sure to remove them
from the top cap (1) or bottom cover (3).
5. Inspect the poppet o-rings (12a, 12b, 12d) and
backup (12c). Replace damaged o-rings, or replace
the entire poppet assembly.
6. Lubricate the poppet assemblies (12) and reinstall
in the top cap (1) and bottom cover (3). Torque to
30-36 ft-lb (40.6-48.8 N•m).
12b
12a
12c
12d
F . 13. Original Poppet Detail
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311238ZAM
TI7750b
Poppets were upgraded in mid-2009 for improved
sealing and earlier actuation. New style poppets
can be used in older air motors, but do not use the
back-up o-ring (12c).
If you order a replacement poppet NXT100, you will
automatically receive a new style poppet.
12b
12a
12d
F . 14. New Style Poppet Detail
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Repair
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