Graco 3A2497BPro User Manual download pdf (Page 49)

Repair

NOTICE

Do not overtighten the ﬂuid seat housing (24).

Overtightening may damage the housing and

the gun barrel, resulting in improper ﬂuid

shutoff.

6. Trigger the g

un and install the ﬂuid seat housing

(24). Tighte

n until snug, then 1/4 turn more.

7. Check that t

he spray tip gasket (27a) is in place.

Align the sp

ray tip tab with the groove in the air

cap (25). In

stall the spray tip (27) in the air cap.

8. Make sure t

hat the electrode (25a) is installed

correctly

in the air cap.

9. Check that

the air cap o-ring (25b) is in place.

10. Check that

the u-cup (22a) is in place on the

retainin

gring(22). Thelipsoftheu-cupmust

face forw

ard.

NOTICE

To avoid

damaging the tip guard, orient the

air cap a

ssembly (25) before tightening the

retaini

ng ring (22). Do not turn the air cap

when the

retaining ring is tight.

11. Orientate the air cap and tighten the retaining

ring securely.

12. See Test Gun Resistance, page 36.

Electrode Replacement

NOTICE

For best perfo

rmance and to avoid potential

damage to the s

pray gun, do not operate the spray

gun without t

he electrode installed in the air cap.

1. See Prepare t

he Gun for Service, page 47.

2. Remove the a

ir cap assembly (25). See

Air Cap, Spr

ay Tip, and Fluid Seat Housing

Replacemen

t, page 48.

3. Pull the el

ectrode (25a) out of the back of the air

cap, using

a needle-nose pliers.

4. Push the ne

w electrode through the air cap hole.

Make sure t

he short end (BB) of the electrode

engages th

ehole(CC)inthebackoftheair

cap. Pres

s the electrode in place ﬁrmly with your

ﬁngers.

5. Install t

he air cap assembly.

6. See Test

Gun Resistance, page 36.

Figur

e 26 Replace Electrode

3A2497B 49

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Graco 3A2497BPro User Manual Page 49

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