10
307010
Service
WARNING
To reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the
Pressure Relief
Procedure
on page 4.
SKIN INJECTION HAZARD
Gun Repair
(See Fig. 6)
NOTE:
Repair kit 208328 is available for the needle
packings. Use all the parts in the kit for the best re-
sults.
1.
Relieve the pressure
. Disconnect the hose.
Remove the tip guard (9) or nozzle extension.
2.
Unscrew the seat housing (18) and valve seat (8*)
from the gun body.
3.
Using the wrench (3), loosen the packing nut (14).
Then use the wrench (3) to unscrew the needle
(10) from the adjusting nut.
4.
Pull back the trigger (27) and remove the packing
nut (14) and two glands (11*, 13*), four packings
(12*) and locknut (4).
5.
Clean and inspect all parts. Replace worn or
damaged parts as needed. If using a repair kit, use
all the parts in the kit during reassembly.
6.
Lubricate the needle and slide it into the front of
the gun body (2).
7.
Lubricate the new packings and glands. One at a
time, place these parts on the needle; the male
gland (11*), four v-packings (12*) with the lips of
the v-packings facing the front of the gun, and the
female gland (13*).
8.
Screw the packing nut (14) into the center of the
gun body. Screw the locknut (4) onto the needle.
9.
Be sure the spring (16) is in the gun body at the
rear of the center opening. Then, install the adjust-
ing nut (7). Using the wrench (3), insert through
the front of the gun, screw the needle (10) into the
adjusting nut until its end is flush with the valve
body.
10. Press the new valve seat (8*) into the body. Screw
on the seat housing.
11. Adjust the needle before operating the gun. See
Needle Adjustment
on page 9.
12. Be sure the tip guard and trigger guard are
installed before using the gun.
Fig. 6
8104
8123
3
9
18
*8
10
2
*11
*12
13*
14
4
7
16
Safety On
1.25in. (3.18 mm)
Free Travel
