827643 Mercruiser OIL PUMP

1. Remove bolts (1) that hold suction bell and tube assemblies (2) to the engine. Remove suction bell and tube assemblies (2) as a unit from the engine. 2. Remove O-ring seals (3) from the tube assemblies. 3. Remove clip (5) and screen assembly (4) from the suction bell. 4. Remove bolts (6) and oil pump (7) from the engine.Install Oil Pump
1. Put the oil pump idler gear in alignment with the crankshaft drive gear and install oil pump (1) on the engine. 2. Install screen assembly (2) and clip (3) on the suction bell. 3. Put clean engine oil on O-ring seals (4) and install them on the tube assemblies. 4. Put tube assemblies (5) and suction bell (6) as a unit in position on the engine and install the bolts that hold them.END BY:a. install oil panDisassemble Oil Pump
START BY:a. remove oil pump 1. Remove bolts (1) and cover (2). Remove the spacer from the cover; then remove the spring and plunger from the pump bore. 2. Remove bolt (4), washer (3) and gear (5) from the pump. 3. Remove bolts (7); then remove shaft assembly (6) from the pump. 4. Remove bolts (8); then remove cover assembly (9) from the pump body. 5. Use tool group (A) to remove bearings (10) from cover assembly (9). 6. Remove shaft and gear assembly (11) from the pump body. 7. Remove the bolt and washer from gear (12). Use tool (B) to remove gear (12). 8. Remove shaft and gear assembly (13) from the pump body. 9. Use tool group (A) to remove the bearings from the pump body bore.Assemble Oil Pump
1. Use tool group (A) to install bearings (2) until they are even with the outside surface of main pump body (1). Install bearings (2) so the joints in the bearings are 30° 15° from the center line of the bearing bores and toward the oil pump outlet passage as shown. After assembly the inside diameter of the bearings must be 22.258 0.008 mm (.8763 .0003 in.). 2. Install shaft and gear assembly (3) in the pump body. Install the key in the shaft. 3. Install gear (4) on the shaft. Install the bolt and washer that hold the gear in position. 4. Install shaft and gear assembly (5) in the pump body. 5. Use tooling (A) to install bearings (7) in cover (6) until they are even with the outside surface of the cover. Install the bearings so the joints in the bearings are 30° 15° from the center of the bearing bores and toward the oil pump outlet passage as shown. After assembly the inside diameter of the bearings must be 22.258 0.008 mm (.8763 .0003 in.). 6. Install cover assembly (6) on the pump body. 7. Put shaft assembly (8) on the oil pump body. Install the two bolts that hold it. 8. Install gear (9) on the shaft assembly. Install the washer and bolt on gear (9). 9. Install plunger (10), spring (13) and spacer (11) in the pump body. Install cover (12) and the bolts (14) that hold it.END BY:a. install oil pump