Doc No: OMM50001243
Rev: C Page 49 of 68
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10.4.3
Servicing Bearing Housings, Crankshaft, and Crossheads
WARNING
Disconnect the driver from the pump and ensure that suction and
discharge lines are disconnected or blocked and have no pressure
applied.
NOTE
Ensure that all pressure inside the pump fluid cylinder has been bled off
before starting any service work. CAUTION: CHECK TO ENSURE THAT
THE POWER IS LOCKED OUT AND TAGGED OUT
Installation Tip: Mark each bearing housing and the power frame to allow installation
back in the original position.
1. The cradle cover (28), and back cover (14) should be
removed to perform the steps in this section. Also, the
plungers should be disconnected from the plunger rods.
Refer to the procedures in Section 10.4.1 and 10.4.2 for
details.
2. The plunger rod seal housings (19) must be removed to
allow the connecting rod (3) and crosshead assemblies (6)
to move forward enough for crankshaft removal. Refer to
Section 10.4.1 for instructions.
3. Push the connecting rod and crosshead assemblies as far
forward into the power frame as possible to provide
clearance for the crankshaft. The connecting rod bolts
should be removed completely to provide additional
clearance when removing the crankshaft and to reduce the
possibility of damage to the crankshaft journals.