nd the Service Technicians read the manual prior to commencing the work) Step 1) Remove Suction Valve Caps & Disconnect Plunger/Extension Rods from Crossheads (these do not need to be completely removed from pump, just backed out of power end Step 2) Remove power end rear cover and disconnect all connect

ONAL OILWELL VARCO models 591-3 and 103O-3 reciprocating pumps are "splash" lubricated. The main bearings and crankshaft bearings are fed by splash. Crossheads and crosshead pin bushings are fed through holes in the crossheads and crosshead reservoir. Intermediate rods are lubricated from the splash they re