Graco A Series Important Safety Instructions Manual page 6

Repair
Repair
Disassembly
1. Flush the mix manifold before servicing. See the
PD2K operation manual.
2. Relieve the pressure as described in the PD2K
operation manual. Disconnect the hoses, taking
note of which port (A or B) they are connected to.
3. Unscrew a plug (15) from the manifold body (1).
Remove and discard the seal (22) each time
a plug is removed. Inspect the seat (12) and
o-rings (13, 14). Replace if damaged.
4. Repeat for the other two plugs (15).
5. Unscrew the outlet fitting (11). Remove the o-ring
(9), bearing (8), mix nozzle (10), and stem ball
(6).
NOTE: When removing the A and B check valves
(19), note which is from the A side and which is
from the B side.
6. Unscrew the check valves (19, 20).
7. Unscrew the packing nut (5). Remove the valve
stem (4), backup washers (3), and o-ring (2).
8. Unscrew the nut (17). Remove the lever (16).
6
Figure 4 Mix Manifold Repair
3A2801A