Turbine Alternator Removal Replacement | Graco Inc 308131, 224400

Service

Turbine Alternator Removal and

Replacement

NOTE: Replace turbine bearings after 2000 hours of operation. See your authorized Graco representative.

1.Prepare the gun for service as instructed on page 22.

2.Remove the power supply from the gun handle as instructed on page 27.

3.Squeeze the two ends of the retaining ring (35) together and carefully pull the alternator (37) away from the power supply (18) until the 3-wire connec- tor (F) disengages. See Fig. 18, page 27.

4.Use an ohmmeter to test the turbine alternator coil. Measure the resistance between the two outer terminals of the 3-wire connector (F). The resist- ance should be 3 to 5 ohms. If the reading varies from this value, replace the alternator.

5.Measure the resistance between each outer terminal of the 3-wire connector and the turbine alternator housing. The resistance should be infinite. If the resistance is not infinite, replace the alternator.

6.Connect the 3-wire connector to the 3 prongs in the power supply. Push the alternator (37) onto the power supply (18) until the retaining ring (35) engages with the alternator.

7.Install the power supply in the gun handle as described on page 27.

Barrel Installation

1.Be sure the gaskets (34 & 18a) and spring (30) are in place. See Fig. 13. Replace if damaged.

2.Place the barrel (3) over the power supply (18) and onto the gun handle (7). Make sure the fluid rod spring (30) is seated properly.

3.Tighten the three socket head cap screws (5) oppositely and evenly to 18 in-lbs (2 NSm) maxi- mum (about a half turn past snug) with the wrench (63) supplied.

CAUTION

To avoid damaging the gun, do not over-tighten the cap screws (5).

4.Assemble the fluid tube (12) back into the fluid fitting (16).

5.Test the gun resistance as instructed on page 20.

18a

	30
	14
12	16
	16

Tighten to 18 in-lbs (2 NSm) maximum (about half turn past snug), using wrench provided.

0381

Fig. 19

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