Repair
Repair
Gun
The needle and seat are available only as a
kit which includes the valve seat, gasket,
needle, seal retainer, and seal.
The Standard Needle and Seat Kit, 237398,
has the number 090 stamped on the needle
and the seat.
A Non-diffused Needle and Seat Kit, 237260,
has the number 125 stamped on the needle
and seat. It is recommended only for use with
mastics, sealers and other high viscosity
materials which have fillers that cannot pass
through the standard seat's diffuser.
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.
Perform Pressure Relief Procedure,
page 11.
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.
36
30
3.
Unscrew the valve seat (2a). Remove
the gasket (2b).
2b
2a
Remove one e-clip (27). Push out the pin
4.
(18). Remove the screw (29), pivot pin
(28), and trigger(25).
21
A
ti04731b
ti03969a
3A4401A