Document P/N: 2P136539
Release Date: 05/25/2017
Revision: F
12 of 42
Installation Highlights:
The proper installation of your SPM
®
well service pump is a must in obtaining long life and trouble free service.
Particular attention must be given to the following items:
A. Mounting:
The fluid end should be mounted to the power end with the following information:
For one piece stay rods; torque the stay rods in to the power frame to 1000 lb ft. (lubricated). For 2-piece
stay rods; lubricate the threads and install hand-tight into the noseplate. After checking that the noseplate
on the fluid cylinder and power frame are clean and clear of any debris, slide the sleeves over the rods.
For both styles; mount the fluid cylinder over the rods and install the nuts hand tight. Nuts are tightened
to 2000 lb ft. for both styles. The tightening increments are 1/3, 2/3, and full value in the pattern outlined
on the following page.
Inspection of the stay rods in the field can determine if a pump has damaged stay rods. Weir
recommends that when you replace one stay rod, you replacement them all. You will also find the nut
loose, if broken, at the fluid end side of the pump.
B. Plunger
Lubrication:
SPM well service plunger pumps require a force fed oil base plunger lube system. More information
pertaining to the plunger lube system and plunger lube oils is included in this manual. (page 15)
C. Supercharging
System:
SPM
®
well service plunger pumps require the use of a centrifugal slurry pump supercharging system to
avoid cavitation at the higher pump speeds. More information pertaining to the supercharging
requirements is included in this manual.
