Removing The Main Gear - Weatherford MP-16 Operation & Maintenance Manual

Since the main gear is not centered in the pump, turning the gear in this way will
NOTE
require removing and turning the pinion shaft and bearings as well.

5.2.9 Removing the Main Gear

If it does become necessary to remove the Main Gear, use the following procedure.
Remove the connecting rods from the
1
crankshaft as per 5.2.6.
Unbolt the main gear from the crankshaft.
2
Slide the main gear from the crankshaft. The
3
gear may have a slight shrink fit to the
crankshaft, so exercise care not to warp or
damage the gear during removal.
It is helpful to place match marks
on the crankshaft gear flange so
NOTE
that the main gear can be
reinstalled in exactly the same
position.
weatherford.com
Pump and Fluid Systems
Chapter 5: Assembly/Disassembly
76 MP-16 2-Piece 5000 psi January 2013