beautypg.com

Graco FUSION 309550U User Manual

Page 22

background image

Maintenance

22

309550U

5.

Push mix chamber forward until impingement ports

(IP) are visible. See T

ABLE

3 for appropriate size

drill to clean ports. Also see identification chart
under Drill Bit Kits, page 39. Some mix chambers
have counterbored holes (CB) and require two drill
sizes to clean impingement ports completely.

TI2420A

IP

CB

IP

TI3533a

Mix Chambers AR and AF,

2020 and 2929

Mix Chambers AR and AF,

4242 or larger

CB

Table 3: Impingement Port Drill Bit Sizes

Mix Chamber

Part No.

Impingement Port (IP)

Drill Bit Size

in. (mm)

Counterbore (CB)

Drill Bit Size

in. (mm)

AR2020

#76, .020 (0.50)

#53, .060 (1.50)

AR2929

#69, .029 (0.70)

#53, .060 (1.50)

AR3737

#63, .037 (0.94)

N/A

AR4242

#58, .042 (1.00)

N/A

AR5252

#55, .052 (1.30)

N/A

AR6060

#53, .060 (1.50)

N/A

AR7070

#50, .070 (1.75)

N/A

AR8686

#44, .086 (2.15)

N/A

AF2020

#76, .020 (0.50)

#53, .060 (1.50)

AF2929

#69, .029 (0.70)

#53, .060 (1.50)

AF4242

#58, .042 (1.00)

N/A

AF5252

#55, .052 (1.30)

N/A

6.

Push mix chamber back in position.

7.

Attach Front End, page 28.

8.

Attach fluid manifold. Connect air. Return gun to

service.