Graco A Series Instructions-Parts List Manual page 13

the valve's ball to see if the ball and spring are free
to move. See F . 11.
IG
ball
15
14
F . 11. Inlet Seat with Pressure Relief Valve
IG
NOTE: If the pressure relief valve in the inlet seat (14) is
clogged or filled with material, soak the seat in a com-
patible solvent. Make sure all material residue is
cleaned from the ball and seat area.
If the relief valve cannot be thoroughly cleaned so that
the ball and spring are free to move, replace the seat
(14).
14. Push the piston assembly through the cylinder just
enough to expose the piston (26) flats. Secure the
piston flats in a vise. Use a plastic mallet to tap the
cylinder (4) up and off the piston assembly.
15. Loosen the piston nut (21). Use Tool Kit 220385 (to
remove the piston shaft (19) and piston nut (21).
Remove the piston nut o-ring (22) and o-ring
retainer (20) from the shaft. Remove the plate (24)
and the seal (25) from the piston (26).
16. Inspect the piston shaft (19). If it is damaged or the
surface is scored, replace it.
17. Clean all piston parts and the cylinder thoroughly in
a compatible solvent. Inspect the inner surface of
the cylinder for scoring, and replace it if necessary.
A scored cylinder will quickly damage the packings.
3A2023C
spring
pressure relief valve
Repair - Model 24J090
13