Graco Edge 256855, Repair Manual

Operation

313317H

7

Seal Replacement and Adjustment Procedure

1. Remove air cap ring (10) and air cap housing (9)

2. Slide trigger pin (14) over to needle removal position.  

Lower trigger (13) to disengage needle.  

3. Remove fluid nozzle (44)

4. Remove needle (44).  Check fluid needle for damage 

or wear.

5. Remove housing nut (7) and remove housing (3) 

from gun body

6. Remove packing nut (8d), spacer (8c), packing (8b), 

and spreader (8a) from housing (3).

7. Install new spreader (8a) and packing (8b) in housing 

(3).  Note orientation of spreader and packing.

8. Install spacer (8c).

9. Install packing nut (8d) but don’t tighten until needle 

(44) is installed.

10. Install housing (3) into gun body and secure with nut 

(7).

11. Lubricate and install needle and fluid nozzle (44)

12. Raise trigger (13) to engage needle

13. Tighten packing nut (8d)

14. Trigger gun to test needle movement.  If needle does 

not return after trigger is released or is slow to return, 
loosen packing nut slightly until needle returns freely.

15. Make sure gun fluid packing’s are sealing properly by 

spraying solvent.

16. If fluid packings leak, tighten packing screw slightly 

and re-test until packing’s seal completely.

ti19030a

10

9

44

14

3

21

8

15

2

32

13

1

8a

8b

8c

8d

7

needle