300FWF996 Page 25
Crosshead Assembly (FIGURE 4-4)
1.
Remove the fluid end following the
procedure described in "Fluid End
Removal and Installation, page 21.
2.
Remove the oil stop head seal retainer
and off-drive gear cover following the
procedure described in Oil Stop Head
Seal Retainer and Gear Covers , page
24.
3.
Remove the main rear inspection cover
from
power
frame.
(Inspect
the
gaskets)
4.
Remove the extension rods from the
front.
5.
Using the correct puller, remove two
keeper pins from front of each
crosshead.
6.
Using a threaded puller, pull outside
crosshead wrist pin from off-drive side.
FIGURE 4-4 Crosshead Assembly
7.
The crosshead is now free to slide out
the front or nose of the pump.
8.
The connecting rod must be removed
from the rear of the pump.
9.
Remove the cotter pins from the
connecting rod bolts, and unscrew the
four slotted nuts holding the rod-cap in
place.
10. Remove the rod cap. CAUTION: The
rod cap is held in place by two dowel
pins. DO NOT DAMAGE PINS.
11. After removal of the rod cap, the rod
will slip down and under the crankshaft
throw, if the throw is in the UP position.
12. Rotate the crankshaft until the next
wrist pin is visible through the wrist-pin
hole in the side of the power frame.
13. Making sure the two keeper pins have
been pulled from the front of the
crosshead, repeat steps 6 through 12
to pull the next crosshead pin,
crosshead, and connecting rod.
14. To remove the connecting rod bearing
from the rod and cap, use a wooden
mallet or wooden hammer handle and
gently press or tap on the edge of the
bearing half, attempting to roll it out of
the cap or rod.
15. Note that the bearing half that fits the
connecting rod is different than the
bearing half that fits the cap half.
16. The wrist-pin bearing is a press-fit and
must be replaced with the aid of a
press.
HALLIBURTON EXHIBIT 1013, Page 31
