Pump and Fluid Systems
Chapter 5: Assembly/Disassembly
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MP-16 2-Piece 5000 psi January 2013
4.2.1
Initial Operations Maintenance
Magnets in the Lube Oil Strainer/Filter
During the first 500 hours or so of new pump operation, special attention should be given
to the magnets in strainer cage. After every 50 hours of operation, the strainer should be
removed and the lubrication oil magnets inspected. Look for any particulate matter on the
magnets, and clean them each time in accordance with standard procedures.
Repeat this process until such a time as the magnets cease accumulating particulate
matter. At that point, simply apply normal regular maintenance procedures.
Pinion and Main Gear
Some corrective pitting of the main gear is expected during the initial operation period.
These pits should be small, round or oval in shape and dispersed along the pitch line of the
gear teeth. If they expand significantly, form single larger pits or do not slow down and halt
during or after the initial operations period, the entire gear train should be thoroughly
inspected and the cause of the problem rectified. Replace any components that are worn
beyond the recommended clearance.
4.2.2
Fastener Torque Specifications
When tightening multiple bolts on flanges, it
is considered the best practice to tighten
opposite bolts first, to ensure a tight flat seal.
The diagram below provides a recommended
order in which to tighten the bolts to best ensure
a tight seal.
In addition, it is generally best to first tighten
each bolt as far as possible by hand without
inflicting pain or injury. Once all bolts are so
tightened, tighten each bolt to one-half torque
tightness, and then finish by tightening each to
full torque tightness once all bolts are at the half-
torque level of tightness.
For exact torque values for specific bolts,
consult the Torque Chart on page 49.
4.2.3
Biannual Inspection
It is recommended that, in addition to the procedures and processes outlined below, the
MP-16 triplex pump should receive a complete inspection about once every two years. This
inspection should cover all components and systems, checking for wear and tear and
ensuring that the pump is still in good operating condition. All damaged, defective or
otherwise nonfunctional components should be repaired if possible or replaced.