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KEY
4
Packing
20
SupPOrt
66
O-Ring
67
O-Ring
n
Fitting
23
Packing Nut
28~~
\
28
Barrel Nut
~~~
29
Support
~,~
44
Insulator
20~
~
60
Gun earrel
6I~
c:/'/
,
29
i»®1'
~ ~66
~n
Fig 11 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Check all of the parts for wear or damage and replace
them if necessary.
...------CAUTION - - - - - - - .
Use extreme care when handling the packing (4)
because it is very brittle. You may want to keep ex-
tra pac kings on hand.
Clean all parts in non-conductive solvent compati-
ble to the fluid being used, such as Xylol or mineral
spirits. Use of conductive solvents can cause the
gun to malfunction.
Place packing nut (23), insulator tube (44), support (20),
packing (4) and support (29) over needle shaft.
Barrel Reassembly
Make sure the three o-rings (66, 67) are in place in pack-
ing supports (20, 29). See Fig 11.
Insert the needle shaft assembly into the barrel and
tighten packing nut (23) with wrench (83c) supplied.
See Figs 8 and 11. Pull the needle back out of the barrel.
Assemble the barrel to the actuator, tightening the bar-
rel nut (28) with the wrench (83b) supplied. See Fig 10.
Install the needle into the gun as described in
Fluid Needle Replacement
Resistor Tube/Resistor Replacement (See Fig 12)
Remove the barrel from the gun body as described in
Barrel Removal. Place a wrench on the flats of retainer
(52) and remove retainer from gun body. Remove re-
tainer, packing (8), and insert (53), Inspect for damage,
replace as necessary. If insert (53) has burn marks,
replace it.
.-------CAUTION - - - - - -
Clean all parts in non-conductive solvent compati-
ble with the fluid being used, such as Xylol or
mineral spirits. Use of conductive solvents can
cause the gun to malfunction.
Remove spring (58) and o-rings (6). Inspect for damage
and replace if necessary. Check resistance of resistor
(62) using a megohmmeter. The resistor electrode (55)
should have 25
±
5 megohms resistance.
To remove the resistor tube (48), lift up on it with one
hand, pushing it from the back of the gun body (56),
while pulling it from the front of the gun body with your
other hand.
Push the new resistor tube (48) back in from the front of
the gun body. The resistor tube should protrude
190 mm (7.5 in.) from the front of the gun body (56).
Screw the retainer (52) back into the gun body. Torque
the retainer to 20 to 27 N·m (15 to
20 ft-Ib).
Place the o-ring
(8)
into insert (53). Install the larger
bored end of the insert into the retainer (52) and over the
resistor tube (48). Slide the o-rings
(6)
in place over the
resistor tube.
Regrease the gun as described in Resistor Tube
Regreasing, Regreasing with Barrell Resistor Tube
Disassembled.
KEY
6
O-Ring
8
O-Ring
22
Retaining Ring
24
Gasket
28
Barrel Nut
48
Resistor Tube
52
Retainer
53
Insert
58
Gun Body
58
Spring
60
Gun Barrel
62
Resistor
~ 6~O
62\48~1
58"
L
52~\{)
~.
TORQUE TO
7j"' -
20-27 N.m
'
(16-20 ft-Ib)
/
It::)
i.
r
Fig 12 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Resistor Tube Regreasing (See Fig 12)
NOTE:
Service Kit 217-114 (supplied with the gun)
contains all items needed to regrease the
resistor tube.
Regreasing With Barrel I Resistor Tube Disassembled
Remove the resistor (62) from the resistor tube (48).
Screw the grease fitting (82c) into the resistor end of the
resistor tube (48). Using the grease gun (82a) and dielec-
tric grease (82b), fill the resistor tube until the grease
comes out of the end of the retainer (52), Remove the
grease fitting.
To install the resistor, first, cover the open end of the re-
tainer (52) with your thumb to prevent too much grease
from being pushed out of the resistor tube (48) and re-
tainer. The, face the plug end of the resistor toward the
front of the gun barrel (60), and push the resistor into
the resistor tube.
Thoroughly wipe off any excess grease. Grease may
contaminate the fluid to be sprayed if allowed to seep in-
to fluid passages of the gun. (Continued on page 14).
307-896
13
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