HP GRACO OR PRO TI1681A manual Power Supply Removal and Replacement

Power Supply Removal and Replacement

•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 41.

2.Remove the barrel (16), page 46.

CAUTION

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 Models only, disconnect the flexible circuit (59) from the socket at the top of the handle (17). See FIG. 30..

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 Models only, disconnect the 6-pin flexible circuit (59) from the power supply.

5.Check the power supply resistance, page 31. Replace if necessary.

Before installing the power supply, make sure the o-rings (18a*, 19a*), spring (18b), and pads (19e) are in place.

6.On Smart Models 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).

Repair

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

9.Lubricate the power supply o-ring (18a*) with dielec- tric 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 Models 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 46.

12.Test gun resistance, page 30.

17

10*

19a*

19

19e

59

ti1505c

GG

18

*18a 18b

Fig. 30. Power Supply

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