Graco Inc 222700, 3500WB Turbine Alternator Replacement, Barrel Installation, Service, 05158B

Service

Turbine Alternator Replacement

NOTE: Replace turbine bearings after 2,000 hours of operation. See your authorized Graco representative.

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

2.Remove the barrel as instructed on page 39.

3.Remove the power supply as instructed on page 40.

4.Squeeze the two ends of the retaining ring (35) together, and carefully pull the alternator (37) away from the power supply (18) until the connector (V) disengages. See Fig. 27, page 40.

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

6.Measure the resistance between each outer terminal of the 3-wire connector (V) and the turbine alternator (37) housing. The resistance should be infinite. If the resistance is not infinite, replace the alternator.

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

8.Install the power supply in the gun handle as instructed on page 40.

9.Install the barrel on the handle as instructed below.

Barrel Installation

1. Clean and dry the inside of the fluid inlet tube (75).

See Fig. 28.

3.Place the barrel (3) over the power supply (18) and onto the gun handle (7). Make sure the fluid nee- dle spring (30) is seated properly, and align the fluid inlet tube (75) with the bracket port. Slide the nut (78) onto the end of the fluid inlet tube.

4.Tighten the three screws (5) oppositely and evenly with the ball-end wrench (63). Tighten the cap screws to 18 in-lbs (2 NSm) maximum (about a half turn past snug). Do not over-tighten the screws.

CAUTION

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

5.Install the ferrule housing (79) through the gun bracket (76), and secure it with the nut (78).

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

Tighten the screws (5) to 18 in-lbs (2 NSm) maximum (about half turn past snug), using the wrench (63) provided..

18a

18

34

 5

3

30

7

91

7576

7879

2. Be sure the gaskets (34, 18a) and spring (30) are

in place. Replace the parts if they are damaged.

Fig. 28

05158B

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