Graco Inc 247937, 247936, 312900C important safety instructions Remove and Replace Power Supply

Gun Repair

Remove and Replace Power Supply

•Inspect the gun handle power supply cavity for dirt or moisture. Clean with a clean, dry rag.

•Do not expose gasket (10) to solvents.

1.Prepare gun for service, page 27.

2.Remove the barrel (16), page 31.

NOTICE

Be careful when handling the power supply (18) to avoid damaging it.

3.Grasp the power supply (18) with your hand. With a gentle side to side motion, free the power sup- ply/alternator assembly from the gun handle (17), then carefully pull it straight out. On Smart Model only, disconnect the flexible circuit (59) from the socket at the top of the handle (17). See FIG. 18.

4.Disconnect the 3-wire connector (GG) from the power supply. Slide the alternator up and off the power supply. Inspect the power supply and alterna- tor for damage. On Smart Model only, disconnect the 6-pin flexible circuit (59) from the power supply.

5.Check the power supply resistance, page 24. Replace if necessary.

6.On Smart Model only, connect the 6-pin flexible cir- cuit (59) to the power supply.

7.Connect the 3-wire connector (GG). Slide the alter- nator (19) down onto the power supply (18).

8.Lubricate the alternator o-ring (19a*) with non-sili- cone grease, Part No. 111265. Do not over-lubri- cate. Ensure the alternator pads (19e) are in place.

9.Lubricate the power supply seal (18a) with dielectric grease (40).

10.Insert the power supply/alternator assembly in the gun handle (17). Make sure the ground strips make contact with the handle. On Smart Model only, con- nect the flexible circuit (59) to the socket at the top of the handle. Push the 6-pin connector into the socket to ensure it is properly connected.

11.Install the barrel (16), page 31. Ensure the ground spring (53) is in place.

12.Test gun resistance, page 23.

17

10*

19a*

19

19e

53

59

ti1505cx

GG

18a

18

FIG. 18. Power Supply

32 312900C