Graco Dispensit 1230 [12/22] Valve disassembly cont d

Valve Disassembly (Cont’d)

6.4 Power Head Section

Typically the power head section will only require servicing if material leaks into the air chamber or the

air chamber is leaking pressurized air.

To disassemble the Power Head Section follow these steps. It is not necessary to remove the air lines if

still attached. Refer to figure 7 for part orientation.

1. Loosen the Set Screw (13) on the Adjustment Knob (1), and remove the Adjustment Knob by turning it

counter clockwise until it comes off the Rod Assembly (4).

2. Remove the Internal Snap Ring (2) from the top of the Power Head.

3. Remove the Rod Assembly by pulling it out the top of the Power Head. The Insert (12) will come out

with the Rod Assembly.

4. Remove and discard the Pressure Seal (11) and “O” Ring (3) from the Insert.

5. Remove and discard the Pressure Seal (6) from the Rod Assembly.

6. Remove and discard the “U” Cup Seal (7) from the bottom of the Power Head Body (5).

Figure 7. Power Head Components. The Power Head section of the 1230 dispense valve has a small number of

components which makes maintenance easy.