Graco Inc 308584 Power Supply Replacement, Service,  Do not expose the gasket 18a to solvents

Service

Power Supply Replacement

1.Prepare the gun for service as instructed on page 30.

2.Remove the barrel as instructed on page 39.

CAUTION

Be careful when handling the power supply to avoid damaging it.

3.Grasp the power supply with your hand. With a gentle side to side motion, loosen the power supply from the gun handle (7), then pull it straight out. See Fig. 27.

4.Inspect the power supply for any physical damage. Check the electrical resistance as instructed in Test Power Supply Resistance, page 29. If nec- essary, replace the power supply.

Apply a very light coat of lubricant to the o-rings 37a.

5.Inspect the power supply cavity in the handle for dirt or moisture. Clean out the cavity with a clean, dry rag to avoid a loss in electrostatic perfor- mance.

6.Lightly lubricate the o-rings (18b, 37a) on the power supply with petroleum jelly.

CAUTION

All the o-rings (18b, 37a) and the compression spring (18c) must be in place or the gun will malfunction.

7.Be sure the gasket (18a) is in place. Insert the power supply in the gun handle.

8.Install the barrel on the handle as instructed on page 41.

9.Test the gun resistance as instructed on page 28.

Do not expose the gasket (18a) to solvents.

18a 

V

18

18c

18b

37a

35

18d

7

37b 37

Fig. 27

05160

40 308584