Pump and Fluid Systems
Chapter 5: Assembly/Disassembly
weatherford.com
74
MP-16 2-Piece 5000 psi January 2013
5.2.7
Removing the Wrist Pin Bearings
CAUTION
If any part of a bearing needs to be replaced, then the entire bearing
must be replaced. Do Not mix the parts of various bearings.
1
Use an adapter plate with a slightly smaller
diameter than the bearing to push or pull the
outer race of the wrist pin bearing from the
connecting rod.
NOTE
Do not drive the bearing from the
rod with a hammer, as this may
damage the bearing.
2
If the inner race of the wrist pin bearing needs
to be replaced, it may be slipped off of the
wrist pin by heating it with a torch. The
bearing race should not have to be raised to
over 200°F to press the wrist pin out of it.
WARNING
During this process, parts
can become extremely
hot. Allow a few minutes
after heating for the
races to stabilize, and
handle with care.