Graco 332097A Manual de usuario descargar pdf (Pagina 9)

VALVE REASSEMBLY

Note: Use the new parts that are in your seal kit where possible.

Note: Use caution as you install the new U-seals into the sleeve assembly so you don't pinch or tear

them. Do this by making sure they are lubricated, and by tucking the lips of the U-seal inward before

uniformly pushing it down into the valve sleeve.

Lightly lubricate parts to facilitate reassembly.

Note what direction the old seals face, as you remove them; make sure the new seals face in the

proper direction when you install them.

1. Replace the U-seal (10) on the bottom piston (9)

2. Replace the U-seal (also 10) on the top piston (6).

3. Replace the U-seal (7) on the dispense piston (4).

4. Make sure that you have lubricated cylinders and pistons so you can reassemble them.

5. Reassemble the bottom piston (9) and the compression springs (11) with the back plate (16). You

will need a tool to pry the springs down so that they fit under the back plate. Position the springs

properly.

6. Reassemble the dispense piston (4) and the top pinch off piston (6). This is easiest if you tilt the

dispense piston to slide it in place. Use care (and a blunt instrument if needed) to make sure the U-

seal fits in properly.

7. Return this (4 & 6) assembly into the upper cylinder in the base (1). Add lubrication if needed. Again,

use care (and a blunt instrument if needed) to make sure the U-seal fits in properly. Position the upper

ridge on the piston towards the top (mounting end) of the base.

8. Place the compression spring (5) over the dispense piston (4).

9. Reinstall the bottom piston (9) and backplate (i6) assembly. Add lubrication if needed. Again, use

care (and a blunt instrument if needed) to make sure the U-seal fits in properly. Align the backplate

holes and the top piston pinch-off to make the parts fit properly.

10. Hold the plate in place with a thumb and install the two 3/g-inch caphead screws (20) in the

recessed holes in the backplate to hold it in place. Turn the screws down, but not tight, so that

movement is possible to align the rest of the parts. Holding all the parts in place for the next step can

be a little difficult; here are two ways to approach the task. (1) Position the valve so the backplate is

level, then stand the spacer rods in place on it and lower the faceplate and screws into them. (2) Hold

the faceplate so three fingers hold the screws in place, put the spacers on the screws, then bring the

valve into place on the faceplate.

11. Reinstall the faceplate/micrometer (14) using the remaining three caphead screws, and three

spacer rods (18). Tighten the screws.

12. Complete the job by remounting the valve and installing the dispense tube.

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Graco 332097A Manual de usuario Pagina 9