Repair
311238ZAM
27
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
IG
. 8 on page 20. Pry off the top cover (30).
4. See F
IG
. 13. Unscrew the poppet assemblies (12).
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).
F
IG
. 13. Original Poppet Detail
TI7750b
12a
12b
12c
12d
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.
F
IG
. 14. New Style Poppet Detail
12a
12b
12d
