300FWF996 Page 12
POWER END AND GEAR REDUCTION
COMPONENTS LUBE SYSTEM (FIGURE
2-2, FIGURE 2-3, and FIGURE 2-4,)
Both the internal gear reduction components
and the power end have one common lube
oil inlet. The power end inlet is located on
the side of the pump forward of the gear
cover. The inlet is a NPTF tee that divides
the lube flow between the lube manifold for
the main bearing and crosshead guide area
and
the
rotary
unions.
Pressurized
lubrication for each crosshead is delivered
from the lube manifold to the top of the
crosshead guides.
An aluminum cover
houses the rotary union, which is attached
to the crankshaft. Lubrication for the rotating
power end components comes from forced
lube through the crankshaft. Lube oil enters
the crankshaft and first lubricates the
connecting
bearings.
Oil
from
the
connecting rod bearing also lubes the wrist-
pin bearing. As oil reaches the first
crankshaft journal, oil exits the journal oil
hole and lubes the journal and journal
bearings, passes through the center of the
connecting rod to the wrist pin and wrist-pin
bearing. It also connects to the crosshead
oil supply, giving a redundant oiling
pathway. This is repeated for the rest of the
main bearing and crosshead components.
Oil is removed from the power end through
two primary drain connections in the bottom
of the frame. Oil passages at the forward
part of the frame members allow the
crosshead cylinders to drain to the power
end sump. Oil is also drained from the gear
covers through drain holes in the outside
frame plates. These drains are all combined
together and empty into the main drains in
the bottom of the pump frame. From here, it
exits to an external oil sump (supplied by
others).
The two main bull-gears are oiled by spray-
bars located inside the gear covers. These
spray-bars are connected externally to the
oiling system through oil hoses. These spray
bars, nozzles, and orifices provide not only
lubrication for the gears and pinions, but
also provide a vehicle to carry away the
generated heat built up by the heavy loading
of the gears and pinions, along with the
pinion bearings and other load carrying
components.
NOTICE
It is extremely important to maintain
some downward slope in the entire drain
system back to the lube reservoir.
FIGURE 2-4: GD-2500Q Gear Reduction Components
HALLIBURTON EXHIBIT 1013, Page 18
