3-1-618 Page 25
FIGURE 4-3 Crosshead Assembly
7.
Remove journal bearings from the rod
and rod cap.
8.
Slide crosshead and rod assembly
forward until journal end of rod is ready to
enter the crosshead guide bore.
9.
Place heavy plastic or cardboard under
end of rod as it enters bore to prevent
scoring as the assembly is removed
through the crosshead guide.
10. Position sling through center of the wrist
pin to support the assembly as it is
removed from crosshead guide bore.
11. Place assembly on floor, standing on the
journal end of the connecting rod, with the
crosshead pointing upward.
12. Remove the four screws holding the front
and back half of the crosshead together.
13. Attach lifting device to the thread of the
crosshead front half and lift off.
14. Remove the thrust bearing.
15. Remove the snap rings from the wrist pin.
16. Remove the wrist pin while supporting the
crosshead back half.
17. Remove the crosshead back half from the
connecting rod.
18. Remove the crosshead wrist pin bushings
from the back half of the crosshead.
Crosshead Guide and Tie Rods
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 crosshead guide end plate following
the procedure described in “Oil Stop
Head Seal Retainer and Crosshead Guide
End Plate,” page 24.
3. Remove the crosshead assembly as
described in “Crosshead Assembly,” page
24.
4.
Remove the 8 bolts connecting the guide
to the frame.
5.
Attach a lifting sling to the guide and
carefully slide the guide forward until it
clears the end of the tie rods.
