Graco 1590 SA, Instructions-Parts List Manual

Page: 19 / 40

Service
310622L 19
Check Valve Repair
Disassembly
1. Relieve the pressure. Disconnect all hoses.
2. Remove the pump from its mounting. Drain.
3. From the outlet manifold, remove both upper clamps
(132a).
4. Remove outlet manifold leaving elbows (128), gas-
kets (129), clamps (130), and tee (339) assembled.
5. For 3A Ball Check pumps: remove ball gasket (240).
Remove middle clamp (132c) and ball stop housing
(2XA). Remove middle gasket (240) and ball (541).
Remove lower clamp (132b), seat (2XB), and gasket
(240). Clean all parts and inspect for wear or dam-
age. Replace parts as needed.
Reference numbers with an asterisk (*) are
replacement parts. For a complete list of replace-
ment parts see Parts, page 26.
F
IG
. 13
TI8768a
128
129*
132c
*240
2XB
132a
*240
130
2XA
3A Ball Check Assembly
*240
132b
*541