300FWF996 Page 11
FIGURE 2-3: GD-2500Q Power End Rear Section View
NOTICE
The direction of rotation must be
such that the top side of the
crankshaft is moving toward the fluid
end.
The crossheads and crosshead-guides are
full-cylindrical design for minimum PV
loading and maximum lubrication. The
connecting rods are automotive type. The
connecting rods are accessible through the
rear of the pump, and the crossheads
through the nose or front of the pump. The
crankshaft is a forged steel automotive type
crankshaft with six cylindrical roller-bearing
mains. The main bearings consist of four
floating and two outside held bearings.
The connecting rod bearings are automotive
journal bearings, and the wrist-pin bearings
are hi-alloy bronze journal bearings.
The crankshaft and crossheads are on the
same centerline. The fluid end is held in
place and in alignment with the power end
by the twenty (20) stay-rods.
(See
FIGURE 2-1).
The power end is fully enclosed to contain
the power end oil, collecting the oil and
draining out the bottom skin through two
NPTF weld-let connections. This is a dry-
sump pump. An external oil sump and lube
pressure and filter system is required.
GEAR
REDUCTION
COMPONENTS
(FIGURE 2-4)
The internal gear reduction consists of two
helical bull-gears located on either end of
the crankshaft, and one input pinion shaft
with helical pinion gears on each end. The
overall ratio of the reduction gear unit is
6.353:1 This arrangement offers a good
power to weight ratio and flexibility in using
different prime movers such as diesel
engines as well as electric motors.
All
gears are heat-treated, hardened, and
ground to AGMA quality level 10 or better to
insure the highest reliability and long life of
the gear box.
HALLIBURTON EXHIBIT 1013, Page 17
