Bareshaft Pump
67
7. Place the three crosshead/connecting rod
assemblies into place (Figure 137). Allow
clearance for the crankshaft by pushing them
towards the uid end.
8. Install two threaded rods (1 in.-8NC x 8 in.) into
the ends of the crankshaft to aid in installation.
9. Using two people, lift the crankshaft into the
power frame. The weight of the crankshaft is
approximately:
• 3000 Series: 125 lb. (57 kg)
• 3600/4200 Series: 325 lb. (147 kg)
10. Using a wood block and a hammer, hit either
end of the crankshaft to seat it in the bearing
bore. Ensure the outer bearing race (Figure
138) is inside the power frame case.
11. Tap in the bearing race on the opposite end of
the crankshaft if not already installed.
12. Install a new oil seal and O-ring onto the
inboard side plate. Install the outboard and in-
board side plates with the original shim packs.
Ensure the thickness of each shim pack is
equal on both ends. Install four equally spaced
side plate capscrews and tighten to 50 ft.lb (68
N·m) (Figure 139).
Figure 137: Connecting Rod Installation.
Connecting Rod
Figure 139: Side Plate Installation.
Bearing Race
Power Frame
Figure 138: Crankshaft Seating.
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