
Doc. No.: OMS500000104
Rev: A Page 27 of 42
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property of FMC Technologies, and may not be reproduced, disclosed, or made public in any manner prior to express written authorization by FMC.
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Figure 7: Back Cover Removal
4. Remove the end cap of the connecting rod (3) by unscrewing the four cap screws that
hold each cap to the rod body. The connecting rod cap can be separated from the body
by unscrewing the cap screws slightly and tapping on the heads.
5. Slide the six rod bearings (13) from the connecting rod (3) and rod cap (3). Note that
these parts sometimes adhere to the crankshaft pin (2).
6. Connecting rods and caps are matched sets and must always be reassembled with their
original mate and in the same orientation. Note the numbered codes stamped on each
half of the connecting rod assemblies and make certain they are installed as matched set
and in the same orientation when re-assembling the pump.
7. Unbolt the four cap screws (17) holding the plunger rod seal housing (16) to the power
frame (1). If needed the cap screws (17) can be used to jack the seal housing (16) away
from the power frame (1) using the two tapped holes provided. Pull the seal housing
over the end of the plunger rod (6) and out of the cradle.
8. Push the connecting rods (3) and crosshead assemblies (5) as far forward into the power
frame (1) as possible to provide clearance for the crankshaft (2). This will provide
additional clearance when removing the crankshaft (2).