Graco HIGH–FLO 243737 Instructions Manual page 23

28. Position the inlet manifold (1) on the inlet valve
housing (6). Install the twelve capscrews (2) and
lockwashers (3) loosely.
29. Tighten the four inside capscrews oppositely and
evenly to 3 NSm (27 in-lb) to balance the load on
the valves. Then tighten all twelve capscrews
oppositely and evenly to 11.5–24.5 NSm (8.5–18
ft-lb). See Fig. 15.
30. Place the inlet valve housing and manifold assem-
bly on the pump stand. Install and tightly screw in
the three pump stand bolts (D). See Fig. 8, page
17.
31. Lubricate and install the new seals (21*, 28*) in the
inlet and outlet housings (6, 5). Set the cylinder
(27) and riser tubes (20) into place in the inlet
valve housing (6). Set the outlet housing (5) onto
the cylinder and riser tubes.
32. Install the six cylinder capscrews (4), lockwashers
(18) and nuts (19). Tighten the capscrews op-
positely and evenly to 81–88 NSm (60–65 ft-lb).
See Fig. 15.
33. Lubricate the seals (15*) and press one into each
side of the outlet valve housing (5). Press the
seats (17), with the unworn sides facing the balls,
into the outlet valve housing. Then install the balls
(13) and ball guides (14).
Service
34. Place the outlet manifold (1) on the outlet valve
housing (5) and install the twelve capscrews (2)
and lockwashers (3) loosely. Tighten the inside
four capscrews oppositely and evenly to 3 NSm (27
in-lb) to balance the load on the valves. Then
tighten all twelve capscrews oppositely and evenly
to 24–27 NSm (18–20 ft-lb). See Fig. 15.
35. Torque the packing nut (12) to 67 NSm (50 ft-lb).
Back off and re–torque to 27–34 NSm (20–25 ft-lb).
36. Reconnect the motor as explained on page 17. Be
sure the grounding wire is connected.
1 Torque oppositely and evenly to 81–88 NSm (60–65 ft-lb).
Torque these 4 screws oppositely and evenly to 3 NSm
2
(27 in-lb), then tighten all 12 screws oppositely and
evenly to 24–27 NSm (18–20 ft-lb).
Fig. 15
4
1
2
2
309136
01410
23