6.6 Reassembly
6.6.1 Assemble the power end
This procedure explains how to assemble a standard ring-oil or optional oil mist-lubricated power end
and includes information for the assembly of these optional features:
•
Pure-oil mist-lubricated power end
•
Radial-heat-flinger
•
Forced convection cooling
•
Water-cooling package
WARNING:
Lifting and handling heavy equipment poses a crush hazard. Use caution during lifting and
handling and wear appropriate Personal Protective Equipment (PPE, such as steel-toed shoes,
gloves, etc.) at all times. Seek assistance if necessary.
CAUTION:
•
Risk of physical injury from hot bearings. Wear insulated gloves when using a bearing
heater.
•
This pump uses duplex bearings mounted back-to-back. Make sure orientation of the
bearings is correct.
NOTICE:
•
There are several methods you can use to install bearings. The recommended method is
to use an induction heater that heats and demagnetizes the bearings.
•
Make sure that all parts and threads are clean and that you have followed all directions
under the Preassembly inspections section.
•
Check for magnetism on the pump shaft and demagnetize the shaft if there is
any detectable magnetism. Magnetism attracts ferritic objects to the impeller, seal, and
bearings which can result in excessive heat generation, sparks, and premature failure.
Oil-mist lubricated power ends are assembled in the same manner as ring oil-lubricated power ends. Oil
rings are not furnished with oiloil-mist lubrication. Disregard any reference to those parts.
1.
Assemble the radial bearing (168) onto the shaft (122).
The bearings are interference fit.
6.6 Reassembly
92
Model 3700i API610 / Type OH2 Installation, Operation, and Maintenance Manual