4)
Remove the connecting rods per
Section 11.5
.
5)
From the side access windows, remove the crosshead pin using the 3/4"-10 tapped hole and a
threaded rod. Be extremely careful not to strike the pin against any surfaces during extraction.
6)
Rotate the crossheads 90° and remove them through the side access windows. Inspect crossheads for
signs of wear or scoring, replace as necessary.
NOTE: Work from the outside in to remove all of the crosshead pins and crossheads.
7)
Inspect the crosshead pins and the bushings for damage, wear, or signs of discoloration from
excessive heat. Discoloration would tend to suggest that the bearing is not receiving sufficient
lubrication, check lubrication plumbing for obstructions.
NOTE: Due to the construction of the crosshead bushing it cannot be reused once it has been removed
from the crosshead. If the bushing needs replacement contact MSI for repair options
8)
Reassemble in the reverse order of these instructions.
MSI Hybrid™ Well Service Pump Enhancement – The crosshead pin retainer has been eliminated from
this design since the pin is screwed securely to the connecting rod. Therefore the potential for
catastrophic failure due to improper retainer installation has been completely eliminated.
Revision K 03/12/2019
MSI - A Division of Dixie Iron Works, Ltd. All rights reserved.
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