TM 5-4940-228-14
Key to Figure 4-1:
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
Fluid control screw
Fluid control spring
19.
20.
Needle assembly
Needle
Locknut
Locknut extension
Fluid control housing
Fluid control gasket
Trigger screw
Trigger stud
Trigger assembly
Air valve assembly
Packing nut
Packing
Air valve body
Air valve stem
Air valve
Air valve spring
a. Unscrew fluid control screw (1) from fluid
control housing (7). Fluid control spring (2) can now
be lifted out.
b. Depress trigger assembly (11) to push needle
assembly (3) from fluid control housing (7) part
way. Pull needle assembly (3) completely out with
your fingers.
c. Unscrew fluid control housing (7) from gun
handle (36). Remove fluid control gasket (8) from
gun handle (36).
d. Remove trigger assembly (11) from gun han-
dle (36) by unscrewing trigger screw (9) from trig-
ger stud (10) and pulling trigger stud (10) from gun
handle (36).
e. Remove air valve assembly (12) from gun han-
dle (36) by unscrewing air valve body (15) from gun
handle (36). Air valve stem (16), air valve (17), air
valve spring (18) and gasket (19) will now be loose.
f. Unscrew packing nut (13) and remove packing
(14) from air valve body (15).
g. Remove fan control assembly (20) from gun
handle (36) by unscrewing fan control body (22).
Disassemble fan control assembly (20) by un-
screwing fan control screw (24) until it is loose on
fan rod assembly (25). Next, unscrew fan control
head 21) from fan rod assembly (25). Slide fan rod
assembly (25) out of fan control body (22), pack-
ing (23) and fan control screw (24).
h. Unscrew air nozzle assembly (26), unscrew
fluid nozzle (27) and remove gasket (28) from gun
head (31).
i. Unscrew gun head screw (29) from gun head
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
Gasket
Fan control assembly
Fan control head
Fan control body
Packing
Fan control screw
Fan rod assembly
Air nozzle assembly
Fluid nozzle
Gasket
Gun head screw
Gasket
Gun head
Packing nut
Packing
Plug
Air connection
Gun handle
(31) thru gun handle (36). Remove gun head (31)
and gasket (30). Unscrew packing nut (32) from
gun head (31) and remove packing (33).
j. Unscrew plug (34) and air connection (35)
from gun handle (36). Disassembly is now complete.
4-16. Cleaning and Inspection.
a. Soak all parts in paint thinner; then using a
bristled brush, remove all foreign matter from par-
ts.
CAUTION
Do not use metal tools or scrapers to
clean air nozzle assembly. If holes are
damaged, spray pattern will be dis-
torted.
b. Inspect all parts for damage or excessive wear.
Pay special attention to threads, needles, nozzles,
and packing. Replace any defective parts.
4-17. Reassembly.
Use Figure 4-1 as a guide and proceed as follows:
a. Screw air connection (35) and plug (34) into
gun handle (36).
b. Insert packing (33) into gun head (31) and
screw packing nut (32) into gun head two or three
threads. Adjustment of packing nut (32) will be
made after assembly procedure is complete.
c. Place gasket (30) over gun head screw (29).
Position gun head (31) on front of gun handle (36);
4-4
