Parts Replacement/Maintenance; Servicing Air Valve - DeVilbiss SRi Pro Manuel Technique

PARTS REPLACEMENT/MAINTENANCE

AIR VALVE INSTRUCTIONS

Servicing Air Valve

Reasons to service air valve:
A) Air valve not functioning correctly (may need
cleaning).
B) Routine maintenance.
C) Air leaks (advise replacement, see p10)
1 . Remove trigger using a Star T20 key . (See fig 1 & 2)
2 . Unscrew air valve using a (14 mm wrench . (See
fig 3)
3 . Remove air valve by gripping stem . (See fig 4)
4 . Remove spring with spring pad . (See fig 5)
5 . DO NOT REMOVE REAR SEAL (35) FROM GUN
BODY . (See fig 6)
6 . DO NOT REMOVE PLASTIC CAGE FROM AIR VALVE
BODY AS THIS MAY DAMAGE THE CAGE . (See fig 7)
7 . CLEAN
a . Remove all paint build up . (See fig 8)
b . The 4 poppet holes must be clear . (See fig 9)
c . Stem must be free to float in poppet . (See fig 10)
d . Stem must slide through cage bore with slight
resistance (due to seal) .
e . Rear seal must look clean and in position in the
bore . (See fig 6)
f . If any of the above cannot be rectified, replace the
air valve . (See Replacing Air Valve, p10)
8 . Replace spring ensuring the end with the plastic
bearing pad goes in first . (See fig 5)
9 . Insert air valve assembly into gun and carefully feed
over the spring and through the rear seal . (See fig 11)
10 . Tighten air valve assembly using fingers first, and
then tighten with a 14mm wrench . (See fig 12)
11 . Replace trigger . (See figs 2 & 1)
12 . If there is an air leak through the gun, the air valve
may need replacing . (See Replacing Air Valve)
SB-2-855-B Page 9