![background image](http://html1.mh-extra.com/html/graco/17m988/17m988_repair-manual_2253334009.webp)
Repair
3A4347D
9
Repair
Disassemble Pump
1.
Pry the button plug off the top of the
pump.
2.
Unscrew packing nut from cylinder.
PRO-DUTY Quick Repair pump retain-
ing nuts are not removable and not sold
separately.
3.
Unscrew cylinder from intake valve.
4.
Disassemble intake valve. Clean and
inspect.
5.
O-ring at the bottom may require a pick
for removal.
6.
Remove the O-ring from the intake
valve.
NOTICE
If using a pick to remove the O-ring use care
to avoid damage to the machined surfaces.