11.2
Removing and Lifting of the Power End
Due to the complexity involved in performing repair work on the power end, MSI does not recommend
complete disassembly of the power end in the field. If the power end requires rework, the well service truck or
skid should be brought to an MSI repair facility. If the entire well service unit cannot be returned, then return
the complete pump with the gear reducer and fluid end still attached.
1)
To remove the entire assembly, detach all piping, electrical controls, plunger lubrication system,
gear reducer lubrication oil connections, the driveshaft guard, and the driveshaft companion flange
connection.
2)
Remove the mounting bolts attaching the pump to the well service unit.
3)
Lift pump using the procedure in
Section 4.1
.
4)
To reinstall the pump after rework, follow the instructions in
Section 4
.
11.3
Access Panels and Gaskets
Do not work on or inspect the pump with the drive engine running or with pressure in the fluid end.
There are three panels on the power end: one on each side for accessing the crossheads, crosshead guides,
power end plungers, and wrist pins, and one at the back for accessing the connecting rod and the crankshaft
journal bearings. Care should be taken when removing the access panels to prevent any contaminants, such as
rain, dirt, or sand, from entering the power end.
1)
Remove the plunger lubrication relief system reservoir.
2)
Remove the screws attaching the side panels and the rear cover using a 9/16" wrench. Do not
attempt to run the pump with these panels removed. To check for motion, disconnect the driveshaft
and rotate the pump by hand.
3)
With the panels removed, check for particles in the bottom of the power end frame. Remove all
solid particles. If there is any metal or brass in the frame, the power end will require a thorough
inspection at an MSI repair facility.
4)
Using an absorbent rag, remove any condensation inside the power frame.
Do not use granulated
absorbents in the pump
.
Revision K 03/12/2019
MSI - A Division of Dixie Iron Works, Ltd. All rights reserved.
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