© 2005 ITW Finishing Systems and Products
7
the diaphragm if is split or
damaged.
4. Check the breather hole in the Lid
is not blocked.
5. Remove air cap (1) and clean. If
any of the holes in the cap are
blocked with coating material use a
toothpick to clean. Never use metal
wire which could damage the cap
and produce distorted spray
patterns
6. Ensure the tip of the nozzle (2) is
clean and free from damage. Build
up of dried paint can distort the
spray pattern.
7. Lubrication – stud/screw (6), needle
(9) and air valve (11) should be
oiled each day.
Nozzle (2) and Needle (9) – Remove
parts in the following order: 7, 8, 9, 1
and 2. Replace any worn or damaged
parts and re-assemble in reverse order.
Recommended tightening torque for
nozzle (2) 9.5-12 Nm (80-100 lbf in).
Packing – Remove parts 7, 8, 9.
Unscrew cartridge (4). Fit new cartridge
finger tight. Re-assemble parts 9, 8,
and 7 and tighten cartridge (4) with
spanner sufficient to seal but to allow
free movement of needle. Lubricate
with gun oil.
Air Valve Seal Kit (16) - (Refer to
photos 1 to 28)
1. Remove Adjusting Knob (7), Spring
(8), and Needle (9).
2. Loosen Housing (10).
3. Remove Housing (10) and Airvalve
Spring.
4. Remove Valve (11).
5. Using Service Tool SPN-7, engage
groove behind the Valve Seat.
6. Remove Valve Seat.
7. Push out the Front Airvalve Seal
with a finger.
8. Turn the Gun upside down and let
the Seal fall out.
9. Fit New Front Seal to Service Tool.
10. Fit new Seal to gunbody and press
firmly to ensure Seal is engaged.
11. Fit New Valve Seat to Service
Tool.
12. Fit Valve Seat to Gunbody.
13 Remove Rear Airvalve Seal from
housing (10) with a hooked
instrument.
14 Fit new Seal to Service Tool.
15 Fit Seal to Housing (10).
16 Replace Valve (11).
17 Replace Valve Spring and screw in
Housing (10).
18 Tighten Housing.
19 Screw reverse end of Service tool i
nto housing until fully engaged.
Tighen by hand to seat the Valve
Seat. Remove tool.
20 Fit Needle (9).
21 Fit Spring (8) and Knob (7).
22 Adjust Needle Packing (4) with
Spanner sufficient to seal but to
allow free movement of needle.
Lubricate with gun oil.
Spreader valve (5) – Caution: always
ensure that the valve is in the fully open
position by turning screw fully counter-
clockwise before fitting to body.
Air cap / Nozzle Selection
Refer to coating material manufacturers
recommendations or ITW Finishing UK
Website:
www.itweuropeanfinishing.com
Replacement of Parts
