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8 309739
Service
Models 12004, 12004X
Disassembly
1. Actuate gun to purge material and relieve pressure
in gun. Pressure Relief Procedure, page 5.
2. Disconnect material supply line from gun handle.
3. Hold adapter (9) stationary and unscrew nozzle and
collar (16).
4. With trigger depressed, unscrew adapter (9) from
gun body (17).
5. Remove o-ring (10) from adapter (9).
6. Loosen lock nut (14).
7. Carefully unscrew and remove spring retainer (15)
and spring (13) from the gun body (17).
8. Remove screw (11) and lock washer (23) from side
of trigger (18).
9. Pull trigger pins (12) from gun body (17) and remove
trigger (18).
10. Unscrew packing nut (5) from gun body (17).
11. Remove cartridge assembly through side of gun
handle.
Cartridge Disassembly Procedure
1. Remove o-ring (4) from groove on packing nut (5).
2. Loosen lock nut (14) on cartridge while holding yoke
(1) in a soft
3. Separate needle/ball (8) from yoke (1) using the slot
in needle/ball to unscrew the yoke.
4. Remove adjusting screw (3) from packing nut (5).
Then, separate needle/ball (8) from packing support
(7).
5. Push seals (6) out of packing nut (5).
Reassembly
Clean all parts thoroughly before reassembling. Check
them carefully for damage or wear, replacing parts as
needed. For best results replace the original parts with
new parts in repair kits.
Prior to assembly, lubricate all seals and o-rings with
PARKER-O-LUBE or an equivalent lubricant.
1. Push seals (6) in the packing nut (5).
2. Screw adjusting screw (3) into packing nut (5).
Insert needle/ball (8) into packing support (7).
3. Attach needle/ball (8) to yoke (1) using slot in the
yoke to screw needle/ball.
4. Secure yoke in soft jawed vice. Tighten lock nut to
cartridge.
5. Install o-ring (4) onto groove in packing nut (5).
6. Insert cartridge assembly through front of gun han-
dle.
7. Screw packing nut (5) in gun body (17).
8. Install trigger (18) and insert trigger pins (12) in gun
body (17). Secure using screws (11) and lock wash-
ers (23).
9. Install snap rings (11) from top to bottom to secure
trigger pins (12).
10. Install spring (13) and spring retainer (15) into the
gun body (17). Adjust spring retainer to allow
approximately 1/32 in. of free play on trigger.
11. Tighten lock nut (14).
12. Install o-ring (10) to adapter (9).
13. With trigger retracted, screw adapter (9) into gun
body (17).
Needle/ball
O-Ring
Yoke
Packing Nut
Adjusting Screw
Nut
Packing Support
Seal
ti3810a
Needle/ball
O-Ring
Yoke
Packing Nut
Adjusting Screw
Nut
Packing Support
Seal
ti3810a