Air Driven Air Amplifiers, AA-8, AA-15 & AA-30 • OM-15A
5
4. Insert tool in second row of holes in sleeve and if necessary, pry out with screwdriver.
5. Pull straight out.
6. Insert bumper hook thru center bumper and pull straight out.
Pilot System
1. Remove hex o-ring sealed plug.
2. Remove spring and 27375 pilot stem (figure 3).
3. Inspect pilot stem and seat for foreign material. Replace stem if shank is bent or damaged.
4. Replace stem if molded seat is damaged.
5. Reassemble in the reverse manner.
NOTE: Unless excessive leakage occurs, it is not advisable to replace the o-ring seal for the shank of the
stem. This requires disassembly of the air section. If replacement is required, care must be taken in
installing the Tru Arc retainer concentrically as shown in figure 4. Use the 27375 pilot stem valve as a
seating tool. Place the rubber valve face against the retainer and tap the top of the valve lightly with a
light hammer to
evenly
bend the legs of the retainer.
