Pump and Fluid Systems
Chapter 2: Storage & Installation
weatherford.com
8
MP-16 2-Piece 5000 psi January 2013
2.1.3
The Prime Mover
The Prime Mover should be installed with great care to ensure maximum operating life
and minimal difficulties. Before locking the pump into position, check that the prime mover
has been aligned properly in relation to the pump, and that all burrs, rough spots, grease and
rust preventative has been removed from the drive shaft, bore, key and keyway.
When installing, check that the pump rotation is set to drive the top of the crankshaft
towards the fluid end, as this will go a long way towards establishing proper splash lubrication
and crosshead loading. Then verify that no damage has occurred to the components and
systems, including all safety devices and guards, and fit keys into the keyways as
appropriate. Finally, lightly coat the pinion shaft with an anti-seize compound or light oil and
install the drive sheave or sprocket hub.
CAUTION
Never operate the pump without proper guards in place.
Belt Drives
Before installing the sheaves, check to ensure that the sheave grooves are not worn or
damaged, that the sheave side walls are straight and that the sheaves are free of rust, dirt or
other extrusions, as all of these will cause the V-belts to deteriorate rapidly.
Belts should be tensioned as recommended by the supplier. Do not use worn or
damaged belts or chains. Do not exceed the recommended tension rating, as it can result in
damage to the shafts.
Once tensioned, perform a final alignment check and ensure all mounted bolts are secure.
To do so, first verify that the sides of the sheaves are equidistant from the centerline of the
groove. Then simply stretch two lengths of string or wire along one side of the sheaves, one
above and one below the centerline. These wires should touch all four points on the sheave
rims.
If it does not touch all four points, adjust move ONE of the sheaves until the string makes
four-point contact. Leave the other sheave in place while performing this procedure.
Chain Drives
When installing chain drives, the chain alignment must be held as close to perfect as
possible. Use the procedures listed under
Belt Drives
to help ensure a proper alignment,
particularly the two-wire procedure, though the wires should be aligned with the sprockets,
and one sprocket’s position should be adjusted as needed.
Chain drives will utilize their own lubrication systems. Follow all manufacturer instructions
when installing this system. If the ambient temperature is expected to drop below 0
°
F, consult
the manufacturer or a reputable lubrication dealer for recommendations.
Direct-Coupled Installations
For direct coupled installations, ensure that the coupling is secure, then install all cages
and guards and secure into position. Check the parts list sheet that came with this particular
unit for recommended guards and cages used. Do not operate pump with loose cages or
guards.
