Graco 3A2497BPro User Manual download pdf (Page 51)

Repair

Fluid Needle Replacement

1. See Prepare th

e Gun for Service, page 47.

2. Remove the air

cap assembly and ﬂuid seat

housing. See A

ir Cap, Spray Tip, and Fluid Seat

Housing Repla

cement, page 48.

3. Remove the gu

nbarrel. See

Gun Barrel Re

moval, page 50.

4. Remove the tr

igger screws (13) and trigger (12).

5. Unscrew the

spring cap (37). Remove the spring

(20a).

6. Insert the s

upplied driver (60) in the socket at the

back of the

ﬂuid needle. Press forward so the two

segments o

f the needle engage (R). This allows

the needle

to be unscrewed from the gun body.

7. Using the m

ulti-tool (61), pull back on the packing

nut (N) to

remove the ﬂuid needle assembly.

8. Install t

he ﬂuid needle assembly in the gun barrel.

Push in on

the needle with the driver (60) and

tighten.

9. Install

the spring (20a).

10. Install

the spring cap (37). Make sure the

groundi

ng spring (37a) is in place.

11. Install

the trigger (12) and screws (13).

12. Instal

l the gun barrel. See

Gun Bar

rel Installation, page 50.

13. Instal

l the seat housing and air cap assembly.

See Air

Cap, Spray Tip, and Fluid Seat Housing

Repla

cement, page 48.

14. See Te

st Gun Resistance, page 36.

Figure 29 Remove Cap and Springs

Figure 30 Remove Fluid Needle

Figure 31 Replace Fluid Needle

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