Graco 249570 A, Instructions-Parts List Manual

Page: 37 / 68

Repair
311075ZAB 37
Recirculation/Spray Valves
1. Follow Before Beginning Repair , page 36.
2. Follow the Pressure Relief Procedure , page 22.
3. Disassemble the Spray valves. See F
IG
. 11, page
37.
4. Clean and inspect all parts for damage. Ensure that
the seat (503a) and gasket (503b) are positioned
inside each valve cartridge (503).
5. Apply PTFE pipe sealant to all tapered pipe threads
before reassembling.
6. Reassemble in reverse order, following all notes in
F
IG
. 11, page 37.
F
IG
. 11 Spray Valves
1
505b (Blue)
504
503
501
502
507
509 510
508
506
503a
503b
TI6977a TI6982a
Heated Models Nonheated Models
Torque to 250 in-lb (28 N•m).
1
2
505b (Blue)
504
503
501
502
509
510
507
506
511
508
503a
503b
Use blue threadlocker on valve cartridge threads into manifold.
2
Part of item 503.
3
3
1
2
3
3
3
505a (Red)
505a (Red)