
Doc. No.: OMS500000104
Rev: A Page 23 of 42
Subject to contractual terms and conditions to the contrary, this document and all the information contained herein are the confidential and exclusive
property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC.
63
15
38
57
1
Figure 5: Removal of Fluid Cylinder
7. Installation will be the reverse of this procedure. Torque all fasteners as outlined in the
Fastener Torque Requirements section of this manual. Please note that if the lock nuts
(63) on the fluid cylinder studs (57) are not adequately torqued a failure is highly likely.
9.3
Replacing Plunger Rod Oil Seals
1. The plunger rod oil seals retain oil in the power frame (1) and prevent dirt, water, or
other contaminants from entering the power frame (1) by way of the plunger rods. The
fluid end need not be disturbed to perform this procedure.
2. Bleed off all pressure inside pump fluid end before starting any service work. CHECK
TO INSURE THAT THE POWER IS LOCKED OUT.
3. Unbolt the plunger clamps (15) and remove them from the plungers (46) and plunger
rods (6).
4. Rotate the crankshaft (2) by hand until one of the plungers (46) is moved fully forward,
toward the fluid cylinder (38), and the plunger rod (6) is fully retracted.