Maintenance
309550ZAP
23
Clean Mix Chamber Nozzle
1. Follow the
2. Engage the piston safety lock (L). See
3. Use the appropriate size drill bit to clean mix
chamber nozzle (N). If necessary, clean air cap (C)
gently with stiff brush.
NOTE:
Clean Air Cap
Soak air cap in compatible solvent. Clean holes with #58
(0.042) drill bit.
Clean Impingement Ports
1. Follow the
2. Disconnect air line quick coupler (D) and remove
fluid manifold (M).
3. Follow the
gun will not flush, see
4. Follow the
5. Push mix chamber (19) forward until impingement
ports (IP) are visible. Some mix chambers have
counterbored holes (CB) and require two drill sizes
to clean impingement ports completely. See T
2, page 24, to select the appropriate drill bit size.
Also see
Table 1: Nozzle Drill Bit Sizes
Round Spray
Flat Spray
Mix Chamber
Part Number
Drill Size
in. (mm)
Mix
Chamber
Part Number
Drill Size
in. (mm)
AR2020
#58, 0.042
(1.00)
AF2020
3/32, 0.094
(2.35)
AR2929
#55, 0.052
(1.30)
AF2929
3/32, 0.094
(2.35)
AR3737
#55, 0.052
(1.30)
AR4242
#53, 0.060
(1.50)
AF4242
3/32, 0.094
(2.35)
AR4747
1/16, 0.0625
(1.59)
AR5252
#50, 0.070
(1.75)
AF5252
3/32, 0.094
(2.35)
AR6060
#44, 0.086
(2.15)
AR7070
3/32, 0.094
(2.35)
AR8686
#32, 0.116
(2.90)
AR2237
0.47 (1.2)
AF2033
3/32, 0.094
(2.35)
AR2924
#55, 0.052
(1.30)
AF2942
3/32, 0.094
(2.35)
AR3729
#55, 0.052
(1.3 mm)
TI2409A
L
D
M
TI2554A
IP
CB
IP
CB
TI2420A
TI3533a
Mix Chambers AR and AF,
2020 and 2929
Mix Chambers AR and AF,
4242 or larger
19