4. LUBRICATION SYSTEM STRYKER 125/150 Oil Pump Body Drive Gear Remove the oil pump driven gear and chain. Remove the two oil pump mounting bolts. Remove the oil pump body. Bolts Screw DISASSEMBLY Remove the pump cover attaching screw. Feeler Gauge INSPECTION Measure the pump body-to-outer rotor clearance. Service Limit: 0.20mm Outer Rotor 4-4