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30849110
Service
To reduce the risk of serious injury from fluid injec-
tion or splashing, always fo llow the Pressure
Relief Procedure on page 5 before servicing the
gun.
WARNING
Repair Notes
The needle and seat are ava ilable only as a kit which
includes items 2a to 2e.
The Standard Needle and Seat Kit, 237398, has th e
number 090 stamped on the needle and seat.
A Non-diffused Needle and Seat Kit, 237260, has the
number 125 stamped on the needle and seat. It is rec-
ommended only for use with mastics, sealers and
other high viscosi ty materials which have fillers that
cannot pass through the standard seat’s dif fuser.
Use high quality, general purpose grease where
grease is indicated.
Disassembly
NOTE: If replacing only the needle and seat, Step 4
and 5 are not required. However, removing them
allows you to clean the gun more thoroughly.
1. Relieve pressure.
Fig. 6
30
21
A
04731
2. Disconnect the fluid hose (A). Remove the tip
guard (30). Unscrew the spring screw (21) about
1/4 in. (7 mm) to release spring tension.
See Fig. 6.
Fig. 7
2a
2b
03969
3. Unscrew th e valve seat (2a). Remove the gasket
(2b). See Fi g. 7.
Fig. 8
29
28
27
18
25
0473
2
4. Remove one e-clip (27). Push out the pin (18).
Remove the screw (29), p ivot pin (28), and trigger
(25). See Fi g. 8.
Fig. 9
24
04733
5. Remove the screws (24). See Fig. 9.