WEICHAI & PSI SERVICE MANUALS AVAILABLE ONLINE AT FLYPARTSGUY.COM Weichai America Corp. 10.5 Disassembly and Assembly of Engine Oil Pump 10.5.1 Exploded View of Engine Oil Pump Fig. 10-5 Exploded view of engine oil pump 10.5.2 Steps to Disassemble Engine Oil Pump Remove the two hexagon bolts and self-locking nut, take down engine oil pump, as shown in Fig. 10-5. 10.5.3 Steps to Assemble Engine Oil Pump 1) Check the pump before assembling, make sure there is no manufacturing defect and damage. 2) Clean up the fitting surface between oil pump and engine block. 3) Install engine oil pump. 4) Install and tighten the two toothed hexagon bolts and self-locking nut.
10.5.4 Inspection and Maintenance of Engine Oil Pump 1) Check the engine oil pump for crack damage, check whether its inner cavity is smooth, replace it if necessary. 2) Check whether engine oil pump shaft can rotate smoothly, replace it if necessary. 10.6 Disassembly and Assembly of Engine Oil Filter 10.6.1 Exploded View of Engine Oil Filter Revision: August 2019 51 GET YOUR WEICHAI & AFTERMARKET SERVICE PARTS AT FLYPARTSGUY.COM